Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
author: Jakub Kicinski <kuba@kernel.org> 2022-10-21 02:49:10 +0200
committer: Jakub Kicinski <kuba@kernel.org> 2022-10-21 02:49:10 +0200
commit: 94adb5e29e0e583283183dbaa852ee9d7d0c4c26 (patch)
tree: 3038a63f3ed9632711100f1187c4c53c304b785b /arch
parent: net: ipa: Proactively round up to kmalloc bucket size (diff)
parent: Merge tag 'net-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netd... (diff)
download: linux-94adb5e29e0e583283183dbaa852ee9d7d0c4c26.tar.xz
linux-94adb5e29e0e583283183dbaa852ee9d7d0c4c26.zip
90 files changed, 987 insertions, 543 deletions
diff --git a/arch/alpha/kernel/core_marvel.c b/arch/alpha/kernel/core_marvel.c
index 6d0b3baf97ff..e9348aec4649 100644
--- a/arch/alpha/kernel/core_marvel.c
+++ b/arch/alpha/kernel/core_marvel.c
@@ -803,7 +803,7 @@ void __iomem *marvel_ioportmap (unsigned long addr)
 	return (void __iomem *)addr;
 }
 
-unsigned u8
+u8
 marvel_ioread8(const void __iomem *xaddr)
 {
 	unsigned long addr = (unsigned long) xaddr;
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index fc30df88ffbe..a2b31d91a1b6 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -371,7 +371,7 @@ static unsigned long sigpage_addr(const struct mm_struct *mm,
 
 	slots = ((last - first) >> PAGE_SHIFT) + 1;
 
-	offset = get_random_int() % slots;
+	offset = prandom_u32_max(slots);
 
 	addr = first + (offset << PAGE_SHIFT);
 
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index ea128e32e8ca..e07f359254c3 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -655,7 +655,7 @@ struct page *get_signal_page(void)
 		 PAGE_SIZE / sizeof(u32));
 
 	/* Give the signal return code some randomness */
-	offset = 0x200 + (get_random_int() & 0x7fc);
+	offset = 0x200 + (get_random_u16() & 0x7fc);
 	signal_return_offset = offset;
 
 	/* Copy signal return handlers into the page */
diff --git a/arch/arm/mach-mmp/devices.c b/arch/arm/mach-mmp/devices.c
index 79f4a2aa5475..9968239d8041 100644
--- a/arch/arm/mach-mmp/devices.c
+++ b/arch/arm/mach-mmp/devices.c
@@ -238,7 +238,7 @@ void pxa_usb_phy_deinit(void __iomem *phy_reg)
 static u64 __maybe_unused usb_dma_mask = ~(u32)0;
 
 #if IS_ENABLED(CONFIG_PHY_PXA_USB)
-struct resource pxa168_usb_phy_resources[] = {
+static struct resource pxa168_usb_phy_resources[] = {
 	[0] = {
 		.start	= PXA168_U2O_PHYBASE,
 		.end	= PXA168_U2O_PHYBASE + USB_PHY_RANGE,
@@ -259,7 +259,7 @@ struct platform_device pxa168_device_usb_phy = {
 #endif /* CONFIG_PHY_PXA_USB */
 
 #if IS_ENABLED(CONFIG_USB_MV_UDC)
-struct resource pxa168_u2o_resources[] = {
+static struct resource pxa168_u2o_resources[] = {
 	/* regbase */
 	[0] = {
 		.start	= PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
@@ -294,7 +294,7 @@ struct platform_device pxa168_device_u2o = {
 #endif /* CONFIG_USB_MV_UDC */
 
 #if IS_ENABLED(CONFIG_USB_EHCI_MV_U2O)
-struct resource pxa168_u2oehci_resources[] = {
+static struct resource pxa168_u2oehci_resources[] = {
 	[0] = {
 		.start	= PXA168_U2O_REGBASE,
 		.end	= PXA168_U2O_REGBASE + USB_REG_RANGE,
@@ -321,7 +321,7 @@ struct platform_device pxa168_device_u2oehci = {
 #endif
 
 #if IS_ENABLED(CONFIG_USB_MV_OTG)
-struct resource pxa168_u2ootg_resources[] = {
+static struct resource pxa168_u2ootg_resources[] = {
 	/* regbase */
 	[0] = {
 		.start	= PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
diff --git a/arch/arm/mach-spear/generic.h b/arch/arm/mach-spear/generic.h
index 43b7996ab754..9e36920d4cfd 100644
--- a/arch/arm/mach-spear/generic.h
+++ b/arch/arm/mach-spear/generic.h
@@ -25,11 +25,8 @@ extern struct pl022_ssp_controller pl022_plat_data;
 extern struct pl08x_platform_data pl080_plat_data;
 
 void __init spear_setup_of_timer(void);
-void __init spear3xx_clk_init(void __iomem *misc_base,
-			      void __iomem *soc_config_base);
 void __init spear3xx_map_io(void);
 void __init spear3xx_dt_init_irq(void);
-void __init spear6xx_clk_init(void __iomem *misc_base);
 void __init spear13xx_map_io(void);
 void __init spear13xx_l2x0_init(void);
 
diff --git a/arch/arm/mach-spear/spear3xx.c b/arch/arm/mach-spear/spear3xx.c
index 2ba406e92c41..7ef9670d3029 100644
--- a/arch/arm/mach-spear/spear3xx.c
+++ b/arch/arm/mach-spear/spear3xx.c
@@ -13,6 +13,7 @@
 #include <linux/amba/pl022.h>
 #include <linux/amba/pl080.h>
 #include <linux/clk.h>
+#include <linux/clk/spear.h>
 #include <linux/io.h>
 #include <asm/mach/map.h>
 #include "pl080.h"
diff --git a/arch/arm/mach-spear/spear6xx.c b/arch/arm/mach-spear/spear6xx.c
index 58183493e06d..f0a1e704cceb 100644
--- a/arch/arm/mach-spear/spear6xx.c
+++ b/arch/arm/mach-spear/spear6xx.c
@@ -12,6 +12,7 @@
 
 #include <linux/amba/pl08x.h>
 #include <linux/clk.h>
+#include <linux/clk/spear.h>
 #include <linux/err.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
@@ -339,7 +340,7 @@ static struct pl08x_platform_data spear6xx_pl080_plat_data = {
  * 0xD0000000		0xFD000000
  * 0xFC000000		0xFC000000
  */
-struct map_desc spear6xx_io_desc[] __initdata = {
+static struct map_desc spear6xx_io_desc[] __initdata = {
 	{
 		.virtual	= (unsigned long)VA_SPEAR6XX_ML_CPU_BASE,
 		.pfn		= __phys_to_pfn(SPEAR_ICM3_ML1_2_BASE),
@@ -359,12 +360,12 @@ struct map_desc spear6xx_io_desc[] __initdata = {
 };
 
 /* This will create static memory mapping for selected devices */
-void __init spear6xx_map_io(void)
+static void __init spear6xx_map_io(void)
 {
 	iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
 }
 
-void __init spear6xx_timer_init(void)
+static void __init spear6xx_timer_init(void)
 {
 	char pclk_name[] = "pll3_clk";
 	struct clk *gpt_clk, *pclk;
@@ -394,7 +395,7 @@ void __init spear6xx_timer_init(void)
 }
 
 /* Add auxdata to pass platform data */
-struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
+static struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
 	OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
 			&spear6xx_pl080_plat_data),
 	{}
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f6737d2f37b2..505c8a1ccbe0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -632,6 +632,23 @@ config ARM64_ERRATUM_1530923
 config ARM64_WORKAROUND_REPEAT_TLBI
 	bool
 
+config ARM64_ERRATUM_2441007
+	bool "Cortex-A55: Completion of affected memory accesses might not be guaranteed by completion of a TLBI"
+	default y
+	select ARM64_WORKAROUND_REPEAT_TLBI
+	help
+	  This option adds a workaround for ARM Cortex-A55 erratum #2441007.
+
+	  Under very rare circumstances, affected Cortex-A55 CPUs
+	  may not handle a race between a break-before-make sequence on one
+	  CPU, and another CPU accessing the same page. This could allow a
+	  store to a page that has been unmapped.
+
+	  Work around this by adding the affected CPUs to the list that needs
+	  TLB sequences to be done twice.
+
+	  If unsure, say Y.
+
 config ARM64_ERRATUM_1286807
 	bool "Cortex-A76: Modification of the translation table for a virtual address might lead to read-after-read ordering violation"
 	default y
diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h
index 8aa0d276a636..abc418650fec 100644
--- a/arch/arm64/include/asm/cputype.h
+++ b/arch/arm64/include/asm/cputype.h
@@ -60,6 +60,7 @@
 #define ARM_CPU_IMP_FUJITSU		0x46
 #define ARM_CPU_IMP_HISI		0x48
 #define ARM_CPU_IMP_APPLE		0x61
+#define ARM_CPU_IMP_AMPERE		0xC0
 
 #define ARM_CPU_PART_AEM_V8		0xD0F
 #define ARM_CPU_PART_FOUNDATION		0xD00
@@ -123,6 +124,8 @@
 #define APPLE_CPU_PART_M1_ICESTORM_MAX	0x028
 #define APPLE_CPU_PART_M1_FIRESTORM_MAX	0x029
 
+#define AMPERE_CPU_PART_AMPERE1		0xAC3
+
 #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53)
 #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57)
 #define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72)
@@ -172,6 +175,7 @@
 #define MIDR_APPLE_M1_FIRESTORM_PRO MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_FIRESTORM_PRO)
 #define MIDR_APPLE_M1_ICESTORM_MAX MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_ICESTORM_MAX)
 #define MIDR_APPLE_M1_FIRESTORM_MAX MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_FIRESTORM_MAX)
+#define MIDR_AMPERE1 MIDR_CPU_MODEL(ARM_CPU_IMP_AMPERE, AMPERE_CPU_PART_AMPERE1)
 
 /* Fujitsu Erratum 010001 affects A64FX 1.0 and 1.1, (v0r0 and v1r0) */
 #define MIDR_FUJITSU_ERRATUM_010001		MIDR_FUJITSU_A64FX
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 58ca4f6b25d6..89ac00084f38 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -230,6 +230,11 @@ static const struct arm64_cpu_capabilities arm64_repeat_tlbi_list[] = {
 		ERRATA_MIDR_RANGE(MIDR_QCOM_KRYO_4XX_GOLD, 0xc, 0xe, 0xf, 0xe),
 	},
 #endif
+#ifdef CONFIG_ARM64_ERRATUM_2441007
+	{
+		ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
+	},
+#endif
 #ifdef CONFIG_ARM64_ERRATUM_2441009
 	{
 		/* Cortex-A510 r0p0 -> r1p1. Fixed in r1p2 */
diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c
index aca88470fb69..7467217c1eaf 100644
--- a/arch/arm64/kernel/mte.c
+++ b/arch/arm64/kernel/mte.c
@@ -48,7 +48,12 @@ static void mte_sync_page_tags(struct page *page, pte_t old_pte,
 	if (!pte_is_tagged)
 		return;
 
-	mte_clear_page_tags(page_address(page));
+	/*
+	 * Test PG_mte_tagged again in case it was racing with another
+	 * set_pte_at().
+	 */
+	if (!test_and_set_bit(PG_mte_tagged, &page->flags))
+		mte_clear_page_tags(page_address(page));
 }
 
 void mte_sync_tags(pte_t old_pte, pte_t pte)
@@ -64,7 +69,7 @@ void mte_sync_tags(pte_t old_pte, pte_t pte)
 
 	/* if PG_mte_tagged is set, tags have already been initialised */
 	for (i = 0; i < nr_pages; i++, page++) {
-		if (!test_and_set_bit(PG_mte_tagged, &page->flags))
+		if (!test_bit(PG_mte_tagged, &page->flags))
 			mte_sync_page_tags(page, old_pte, check_swap,
 					   pte_is_tagged);
 	}
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 9015f49c206e..044a7d7f1f6a 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -591,7 +591,7 @@ unsigned long __get_wchan(struct task_struct *p)
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
+		sp -= prandom_u32_max(PAGE_SIZE);
 	return sp & ~0xf;
 }
 
diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index a8ea1637b137..bfce41c2a53b 100644
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -868,6 +868,10 @@ u8 spectre_bhb_loop_affected(int scope)
 			MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
 			{},
 		};
+		static const struct midr_range spectre_bhb_k11_list[] = {
+			MIDR_ALL_VERSIONS(MIDR_AMPERE1),
+			{},
+		};
 		static const struct midr_range spectre_bhb_k8_list[] = {
 			MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
 			MIDR_ALL_VERSIONS(MIDR_CORTEX_A57),
@@ -878,6 +882,8 @@ u8 spectre_bhb_loop_affected(int scope)
 			k = 32;
 		else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k24_list))
 			k = 24;
+		else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k11_list))
+			k = 11;
 		else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k8_list))
 			k =  8;
 
diff --git a/arch/arm64/kernel/syscall.c b/arch/arm64/kernel/syscall.c
index 733451fe7e41..d72e8f23422d 100644
--- a/arch/arm64/kernel/syscall.c
+++ b/arch/arm64/kernel/syscall.c
@@ -67,7 +67,7 @@ static void invoke_syscall(struct pt_regs *regs, unsigned int scno,
 	 *
 	 * The resulting 5 bits of entropy is seen in SP[8:4].
 	 */
-	choose_random_kstack_offset(get_random_int() & 0x1FF);
+	choose_random_kstack_offset(get_random_u16() & 0x1FF);
 }
 
 static inline bool has_syscall_work(unsigned long flags)
diff --git a/arch/arm64/mm/mteswap.c b/arch/arm64/mm/mteswap.c
index 4334dec93bd4..bed803d8e158 100644
--- a/arch/arm64/mm/mteswap.c
+++ b/arch/arm64/mm/mteswap.c
@@ -53,7 +53,12 @@ bool mte_restore_tags(swp_entry_t entry, struct page *page)
 	if (!tags)
 		return false;
 
-	mte_restore_page_tags(page_address(page), tags);
+	/*
+	 * Test PG_mte_tagged again in case it was racing with another
+	 * set_pte_at().
+	 */
+	if (!test_and_set_bit(PG_mte_tagged, &page->flags))
+		mte_restore_page_tags(page_address(page), tags);
 
 	return true;
 }
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 7f1fb36f208c..384757a7eda9 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -732,7 +732,7 @@ EndSysreg
 
 Sysreg	SCTLR_EL1	3	0	1	0	0
 Field	63	TIDCP
-Field	62	SPINMASK
+Field	62	SPINTMASK
 Field	61	NMI
 Field	60	EnTP2
 Res0	59:58
diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h
index 8ea57e2f0e04..946704bee599 100644
--- a/arch/loongarch/include/asm/pgtable.h
+++ b/arch/loongarch/include/asm/pgtable.h
@@ -412,6 +412,9 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 	__update_tlb(vma, address, ptep);
 }
 
+#define __HAVE_ARCH_UPDATE_MMU_TLB
+#define update_mmu_tlb	update_mmu_cache
+
 static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
 			unsigned long address, pmd_t *pmdp)
 {
diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index 660492f064e7..1256e3582475 100644
--- a/arch/loongarch/kernel/process.c
+++ b/arch/loongarch/kernel/process.c
@@ -293,7 +293,7 @@ unsigned long stack_top(void)
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
+		sp -= prandom_u32_max(PAGE_SIZE);
 
 	return sp & STACK_ALIGN;
 }
diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c
index f32c38abd791..8c9826062652 100644
--- a/arch/loongarch/kernel/vdso.c
+++ b/arch/loongarch/kernel/vdso.c
@@ -78,7 +78,7 @@ static unsigned long vdso_base(void)
 	unsigned long base = STACK_TOP;
 
 	if (current->flags & PF_RANDOMIZE) {
-		base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
+		base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
 		base = PAGE_ALIGN(base);
 	}
 
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 35b912bce429..bbe9ce471791 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -711,7 +711,7 @@ unsigned long mips_stack_top(void)
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
+		sp -= prandom_u32_max(PAGE_SIZE);
 
 	return sp & ALMASK;
 }
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index b2cc2c2dd4bf..5fd9bf1d596c 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -79,7 +79,7 @@ static unsigned long vdso_base(void)
 	}
 
 	if (current->flags & PF_RANDOMIZE) {
-		base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
+		base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
 		base = PAGE_ALIGN(base);
 	}
 
diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kernel/dma.c
index a82b2caaa560..b3edbb33b621 100644
--- a/arch/openrisc/kernel/dma.c
+++ b/arch/openrisc/kernel/dma.c
@@ -74,10 +74,10 @@ void *arch_dma_set_uncached(void *cpu_addr, size_t size)
 	 * We need to iterate through the pages, clearing the dcache for
 	 * them and setting the cache-inhibit bit.
 	 */
-	mmap_read_lock(&init_mm);
-	error = walk_page_range(&init_mm, va, va + size, &set_nocache_walk_ops,
-			NULL);
-	mmap_read_unlock(&init_mm);
+	mmap_write_lock(&init_mm);
+	error = walk_page_range_novma(&init_mm, va, va + size,
+			&set_nocache_walk_ops, NULL, NULL);
+	mmap_write_unlock(&init_mm);
 
 	if (error)
 		return ERR_PTR(error);
@@ -88,11 +88,11 @@ void arch_dma_clear_uncached(void *cpu_addr, size_t size)
 {
 	unsigned long va = (unsigned long)cpu_addr;
 
-	mmap_read_lock(&init_mm);
+	mmap_write_lock(&init_mm);
 	/* walk_page_range shouldn't be able to fail here */
-	WARN_ON(walk_page_range(&init_mm, va, va + size,
-			&clear_nocache_walk_ops, NULL));
-	mmap_read_unlock(&init_mm);
+	WARN_ON(walk_page_range_novma(&init_mm, va, va + size,
+			&clear_nocache_walk_ops, NULL, NULL));
+	mmap_write_unlock(&init_mm);
 }
 
 void arch_sync_dma_for_device(phys_addr_t addr, size_t size,
diff --git a/arch/parisc/include/asm/alternative.h b/arch/parisc/include/asm/alternative.h
index 0ec54f43d6d2..1ed45fd085d3 100644
--- a/arch/parisc/include/asm/alternative.h
+++ b/arch/parisc/include/asm/alternative.h
@@ -22,10 +22,10 @@
 
 struct alt_instr {
 	s32 orig_offset;	/* offset to original instructions */
-	s32 len;		/* end of original instructions */
-	u32 cond;		/* see ALT_COND_XXX */
+	s16 len;		/* end of original instructions */
+	u16 cond;		/* see ALT_COND_XXX */
 	u32 replacement;	/* replacement instruction or code */
-};
+} __packed;
 
 void set_kernel_text_rw(int enable_read_write);
 void apply_alternatives_all(void);
@@ -35,8 +35,9 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
 /* Alternative SMP implementation. */
 #define ALTERNATIVE(cond, replacement)		"!0:"	\
 	".section .altinstructions, \"aw\"	!"	\
-	".word (0b-4-.), 1, " __stringify(cond) ","	\
-		__stringify(replacement) "	!"	\
+	".word (0b-4-.)				!"	\
+	".hword 1, " __stringify(cond) "	!"	\
+	".word " __stringify(replacement) "	!"	\
 	".previous"
 
 #else
@@ -44,15 +45,17 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
 /* to replace one single instructions by a new instruction */
 #define ALTERNATIVE(from, to, cond, replacement)\
 	.section .altinstructions, "aw"	!	\
-	.word (from - .), (to - from)/4	!	\
-	.word cond, replacement		!	\
+	.word (from - .)		!	\
+	.hword (to - from)/4, cond	!	\
+	.word replacement		!	\
 	.previous
 
 /* to replace multiple instructions by new code */
 #define ALTERNATIVE_CODE(from, num_instructions, cond, new_instr_ptr)\
 	.section .altinstructions, "aw"	!	\
-	.word (from - .), -num_instructions !	\
-	.word cond, (new_instr_ptr - .)	!	\
+	.word (from - .)		!	\
+	.hword -num_instructions, cond	!	\
+	.word (new_instr_ptr - .)	!	\
 	.previous
 
 #endif  /*  __ASSEMBLY__  */
diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h
index b643092d4b98..fcbcf9a96c11 100644
--- a/arch/parisc/include/asm/pdc.h
+++ b/arch/parisc/include/asm/pdc.h
@@ -19,9 +19,6 @@ extern unsigned long parisc_pat_pdc_cap; /* PDC capabilities (PAT) */
 #define PDC_TYPE_SYSTEM_MAP	 1 /* 32-bit, but supports PDC_SYSTEM_MAP */
 #define PDC_TYPE_SNAKE		 2 /* Doesn't support SYSTEM_MAP */
 
-void pdc_console_init(void);	/* in pdc_console.c */
-void pdc_console_restart(void);
-
 void setup_pdc(void);		/* in inventory.c */
 
 /* wrapper-functions from pdc.c */
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index df7b931865d2..ecd028854469 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -192,6 +192,11 @@ extern void __update_cache(pte_t pte);
 #define _PAGE_PRESENT_BIT  22   /* (0x200) Software: translation valid */
 #define _PAGE_HPAGE_BIT    21   /* (0x400) Software: Huge Page */
 #define _PAGE_USER_BIT     20   /* (0x800) Software: User accessible page */
+#ifdef CONFIG_HUGETLB_PAGE
+#define _PAGE_SPECIAL_BIT  _PAGE_DMB_BIT  /* DMB feature is currently unused */
+#else
+#define _PAGE_SPECIAL_BIT  _PAGE_HPAGE_BIT /* use unused HUGE PAGE bit */
+#endif
 
 /* N.B. The bits are defined in terms of a 32 bit word above, so the */
 /*      following macro is ok for both 32 and 64 bit.                */
@@ -219,7 +224,7 @@ extern void __update_cache(pte_t pte);
 #define _PAGE_PRESENT  (1 << xlate_pabit(_PAGE_PRESENT_BIT))
 #define _PAGE_HUGE     (1 << xlate_pabit(_PAGE_HPAGE_BIT))
 #define _PAGE_USER     (1 << xlate_pabit(_PAGE_USER_BIT))
-#define _PAGE_SPECIAL  (_PAGE_DMB)
+#define _PAGE_SPECIAL  (1 << xlate_pabit(_PAGE_SPECIAL_BIT))
 
 #define _PAGE_TABLE	(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | _PAGE_DIRTY | _PAGE_ACCESSED)
 #define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_SPECIAL)
diff --git a/arch/parisc/kernel/alternative.c b/arch/parisc/kernel/alternative.c
index daa1e9047275..66f5672c70bd 100644
--- a/arch/parisc/kernel/alternative.c
+++ b/arch/parisc/kernel/alternative.c
@@ -26,7 +26,7 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
 	struct alt_instr *entry;
 	int index = 0, applied = 0;
 	int num_cpus = num_online_cpus();
-	u32 cond_check;
+	u16 cond_check;
 
 	cond_check = ALT_COND_ALWAYS |
 		((num_cpus == 1) ? ALT_COND_NO_SMP : 0) |
@@ -45,8 +45,9 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
 
 	for (entry = start; entry < end; entry++, index++) {
 
-		u32 *from, cond, replacement;
-		s32 len;
+		u32 *from, replacement;
+		u16 cond;
+		s16 len;
 
 		from = (u32 *)((ulong)&entry->orig_offset + entry->orig_offset);
 		len = entry->len;
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index df8102fb435f..0e5ebfe8d9d2 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -499,6 +499,10 @@
 	 * Finally, _PAGE_READ goes in the top bit of PL1 (so we
 	 * trigger an access rights trap in user space if the user
 	 * tries to read an unreadable page */
+#if _PAGE_SPECIAL_BIT == _PAGE_DMB_BIT
+	/* need to drop DMB bit, as it's used as SPECIAL flag */
+	depi		0,_PAGE_SPECIAL_BIT,1,\pte
+#endif
 	depd            \pte,8,7,\prot
 
 	/* PAGE_USER indicates the page can be read with user privileges,
@@ -529,6 +533,10 @@
 	 * makes the tlb entry for the differently formatted pa11
 	 * insertion instructions */
 	.macro		make_insert_tlb_11	spc,pte,prot
+#if _PAGE_SPECIAL_BIT == _PAGE_DMB_BIT
+	/* need to drop DMB bit, as it's used as SPECIAL flag */
+	depi		0,_PAGE_SPECIAL_BIT,1,\pte
+#endif
 	zdep		\spc,30,15,\prot
 	dep		\pte,8,7,\prot
 	extru,=		\pte,_PAGE_NO_CACHE_BIT,1,%r0
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index 2661cdd256ae..7d0989f523d0 100644
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -1,46 +1,18 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /* 
- *    PDC Console support - ie use firmware to dump text via boot console
+ *    PDC early console support - use PDC firmware to dump text via boot console
  *
- *    Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
- *    Copyright (C) 2000 Martin K Petersen <mkp at mkp.net>
- *    Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
- *    Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
- *    Copyright (C) 2000 Philipp Rumpf <prumpf with tux.org>
- *    Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
- *    Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org>
- *    Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org>
- *    Copyright (C) 2001 Helge Deller <deller at parisc-linux.org>
- *    Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
- *    Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
- *    Copyright (C) 2010 Guy Martin <gmsoft at tuxicoman.be>
+ *    Copyright (C) 2001-2022 Helge Deller <deller@gmx.de>
  */
 
-/*
- *  The PDC console is a simple console, which can be used for debugging 
- *  boot related problems on HP PA-RISC machines. It is also useful when no
- *  other console works.
- *
- *  This code uses the ROM (=PDC) based functions to read and write characters
- *  from and to PDC's boot path.
- */
-
-/* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems. 
- * On production kernels EARLY_BOOTUP_DEBUG should be undefined. */
-#define EARLY_BOOTUP_DEBUG
-
-
-#include <linux/kernel.h>
 #include <linux/console.h>
-#include <linux/string.h>
 #include <linux/init.h>
-#include <linux/major.h>
-#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/kgdb.h>
 #include <asm/page.h>		/* for PAGE0 */
 #include <asm/pdc.h>		/* for iodc_call() proto and friends */
 
 static DEFINE_SPINLOCK(pdc_console_lock);
-static struct console pdc_cons;
 
 static void pdc_console_write(struct console *co, const char *s, unsigned count)
 {
@@ -54,7 +26,8 @@ static void pdc_console_write(struct console *co, const char *s, unsigned count)
 	spin_unlock_irqrestore(&pdc_console_lock, flags);
 }
 
-int pdc_console_poll_key(struct console *co)
+#ifdef CONFIG_KGDB
+static int kgdb_pdc_read_char(void)
 {
 	int c;
 	unsigned long flags;
@@ -63,201 +36,40 @@ int pdc_console_poll_key(struct console *co)
 	c = pdc_iodc_getc();
 	spin_unlock_irqrestore(&pdc_console_lock, flags);
 
-	return c;
-}
-
-static int pdc_console_setup(struct console *co, char *options)
-{
-	return 0;
-}
-
-#if defined(CONFIG_PDC_CONSOLE)
-#include <linux/vt_kern.h>
-#include <linux/tty_flip.h>
-
-#define PDC_CONS_POLL_DELAY (30 * HZ / 1000)
-
-static void pdc_console_poll(struct timer_list *unused);
-static DEFINE_TIMER(pdc_console_timer, pdc_console_poll);
-static struct tty_port tty_port;
-
-static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp)
-{
-	tty_port_tty_set(&tty_port, tty);
-	mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
-
-	return 0;
+	return (c <= 0) ? NO_POLL_CHAR : c;
 }
 
-static void pdc_console_tty_close(struct tty_struct *tty, struct file *filp)
+static void kgdb_pdc_write_char(u8 chr)
 {
-	if (tty->count == 1) {
-		del_timer_sync(&pdc_console_timer);
-		tty_port_tty_set(&tty_port, NULL);
-	}
+	if (PAGE0->mem_cons.cl_class != CL_DUPLEX)
+		pdc_console_write(NULL, &chr, 1);
 }
 
-static int pdc_console_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
-{
-	pdc_console_write(NULL, buf, count);
-	return count;
-}
-
-static unsigned int pdc_console_tty_write_room(struct tty_struct *tty)
-{
-	return 32768; /* no limit, no buffer used */
-}
-
-static const struct tty_operations pdc_console_tty_ops = {
-	.open = pdc_console_tty_open,
-	.close = pdc_console_tty_close,
-	.write = pdc_console_tty_write,
-	.write_room = pdc_console_tty_write_room,
+static struct kgdb_io kgdb_pdc_io_ops = {
+	.name = "kgdb_pdc",
+	.read_char = kgdb_pdc_read_char,
+	.write_char = kgdb_pdc_write_char,
 };
-
-static void pdc_console_poll(struct timer_list *unused)
-{
-	int data, count = 0;
-
-	while (1) {
-		data = pdc_console_poll_key(NULL);
-		if (data == -1)
-			break;
-		tty_insert_flip_char(&tty_port, data & 0xFF, TTY_NORMAL);
-		count ++;
-	}
-
-	if (count)
-		tty_flip_buffer_push(&tty_port);
-
-	if (pdc_cons.flags & CON_ENABLED)
-		mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
-}
-
-static struct tty_driver *pdc_console_tty_driver;
-
-static int __init pdc_console_tty_driver_init(void)
-{
-	struct tty_driver *driver;
-	int err;
-
-	/* Check if the console driver is still registered.
-	 * It is unregistered if the pdc console was not selected as the
-	 * primary console. */
-
-	struct console *tmp;
-
-	console_lock();
-	for_each_console(tmp)
-		if (tmp == &pdc_cons)
-			break;
-	console_unlock();
-
-	if (!tmp) {
-		printk(KERN_INFO "PDC console driver not registered anymore, not creating %s\n", pdc_cons.name);
-		return -ENODEV;
-	}
-
-	printk(KERN_INFO "The PDC console driver is still registered, removing CON_BOOT flag\n");
-	pdc_cons.flags &= ~CON_BOOT;
-
-	driver = tty_alloc_driver(1, TTY_DRIVER_REAL_RAW |
-			TTY_DRIVER_RESET_TERMIOS);
-	if (IS_ERR(driver))
-		return PTR_ERR(driver);
-
-	tty_port_init(&tty_port);
-
-	driver->driver_name = "pdc_cons";
-	driver->name = "ttyB";
-	driver->major = MUX_MAJOR;
-	driver->minor_start = 0;
-	driver->type = TTY_DRIVER_TYPE_SYSTEM;
-	driver->init_termios = tty_std_termios;
-	tty_set_operations(driver, &pdc_console_tty_ops);
-	tty_port_link_device(&tty_port, driver, 0);
-
-	err = tty_register_driver(driver);
-	if (err) {
-		printk(KERN_ERR "Unable to register the PDC console TTY driver\n");
-		tty_port_destroy(&tty_port);
-		tty_driver_kref_put(driver);
-		return err;
-	}
-
-	pdc_console_tty_driver = driver;
-
-	return 0;
-}
-device_initcall(pdc_console_tty_driver_init);
-
-static struct tty_driver * pdc_console_device (struct console *c, int *index)
-{
-	*index = c->index;
-	return pdc_console_tty_driver;
-}
-#else
-#define pdc_console_device NULL
 #endif
 
-static struct console pdc_cons = {
-	.name =		"ttyB",
-	.write =	pdc_console_write,
-	.device =	pdc_console_device,
-	.setup =	pdc_console_setup,
-	.flags =	CON_BOOT | CON_PRINTBUFFER,
-	.index =	-1,
-};
-
-static int pdc_console_initialized;
-
-static void pdc_console_init_force(void)
+static int __init pdc_earlycon_setup(struct earlycon_device *device,
+				     const char *opt)
 {
-	if (pdc_console_initialized)
-		return;
-	++pdc_console_initialized;
-	
+	struct console *earlycon_console;
+
 	/* If the console is duplex then copy the COUT parameters to CIN. */
 	if (PAGE0->mem_cons.cl_class == CL_DUPLEX)
 		memcpy(&PAGE0->mem_kbd, &PAGE0->mem_cons, sizeof(PAGE0->mem_cons));
 
-	/* register the pdc console */
-	register_console(&pdc_cons);
-}
+	earlycon_console = device->con;
+	earlycon_console->write = pdc_console_write;
+	device->port.iotype = UPIO_MEM32BE;
 
-void __init pdc_console_init(void)
-{
-#if defined(EARLY_BOOTUP_DEBUG) || defined(CONFIG_PDC_CONSOLE)
-	pdc_console_init_force();
+#ifdef CONFIG_KGDB
+	kgdb_register_io_module(&kgdb_pdc_io_ops);
 #endif
-#ifdef EARLY_BOOTUP_DEBUG
-	printk(KERN_INFO "Initialized PDC Console for debugging.\n");
-#endif
-}
-
-
-/*
- * Used for emergencies. Currently only used if an HPMC occurs. If an
- * HPMC occurs, it is possible that the current console may not be
- * properly initialised after the PDC IO reset. This routine unregisters
- * all of the current consoles, reinitializes the pdc console and
- * registers it.
- */
-
-void pdc_console_restart(void)
-{
-	struct console *console;
-
-	if (pdc_console_initialized)
-		return;
 
-	/* If we've already seen the output, don't bother to print it again */
-	if (console_drivers != NULL)
-		pdc_cons.flags &= ~CON_PRINTBUFFER;
-
-	while ((console = console_drivers) != NULL)
-		unregister_console(console_drivers);
-
-	/* force registering the pdc console */
-	pdc_console_init_force();
+	return 0;
 }
+
+EARLYCON_DECLARE(pdc, pdc_earlycon_setup);
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 3db0e97e6c06..c4f8374c7018 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -284,7 +284,7 @@ __get_wchan(struct task_struct *p)
 
 static inline unsigned long brk_rnd(void)
 {
-	return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
+	return (get_random_u32() & BRK_RND_MASK) << PAGE_SHIFT;
 }
 
 unsigned long arch_randomize_brk(struct mm_struct *mm)
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index f005ddedb50e..375f38d6e1a4 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -70,6 +70,10 @@ void __init setup_cmdline(char **cmdline_p)
 			strlcat(p, "tty0", COMMAND_LINE_SIZE);
 	}
 
+	/* default to use early console */
+	if (!strstr(p, "earlycon"))
+		strlcat(p, " earlycon=pdc", COMMAND_LINE_SIZE);
+
 #ifdef CONFIG_BLK_DEV_INITRD
 		if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
 		{
@@ -139,8 +143,6 @@ void __init setup_arch(char **cmdline_p)
 	if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
 		panic("KERNEL_INITIAL_ORDER too small!");
 
-	pdc_console_init();
-
 #ifdef CONFIG_64BIT
 	if(parisc_narrow_firmware) {
 		printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 2b34294517a1..848b0702005d 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -239,14 +239,14 @@ static unsigned long mmap_rnd(void)
 	unsigned long rnd = 0;
 
 	if (current->flags & PF_RANDOMIZE)
-		rnd = get_random_int() & MMAP_RND_MASK;
+		rnd = get_random_u32() & MMAP_RND_MASK;
 
 	return rnd << PAGE_SHIFT;
 }
 
 unsigned long arch_mmap_rnd(void)
 {
-	return (get_random_int() & MMAP_RND_MASK) << PAGE_SHIFT;
+	return (get_random_u32() & MMAP_RND_MASK) << PAGE_SHIFT;
 }
 
 static unsigned long mmap_legacy_base(void)
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index b78f1b9d45c1..f9696fbf646c 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -239,13 +239,6 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
 	/* unlock the pdc lock if necessary */
 	pdc_emergency_unlock();
 
-	/* maybe the kernel hasn't booted very far yet and hasn't been able 
-	 * to initialize the serial or STI console. In that case we should 
-	 * re-enable the pdc console, so that the user will be able to 
-	 * identify the problem. */
-	if (!console_drivers)
-		pdc_console_restart();
-	
 	if (err)
 		printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
 			current->comm, task_pid_nr(current), str, err);
@@ -429,10 +422,6 @@ void parisc_terminate(char *msg, struct pt_regs *regs, int code, unsigned long o
 	/* unlock the pdc lock if necessary */
 	pdc_emergency_unlock();
 
-	/* restart pdc console if necessary */
-	if (!console_drivers)
-		pdc_console_restart();
-
 	/* Not all paths will gutter the processor... */
 	switch(code){
 
@@ -482,9 +471,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
 	unsigned long fault_space = 0;
 	int si_code;
 
-	if (code == 1)
-	    pdc_console_restart();  /* switch back to pdc if HPMC */
-	else if (!irqs_disabled_flags(regs->gr[0]))
+	if (!irqs_disabled_flags(regs->gr[0]))
 	    local_irq_enable();
 
 	/* Security check:
diff --git a/arch/parisc/kernel/vdso.c b/arch/parisc/kernel/vdso.c
index 63dc44c4c246..47e5960a2f96 100644
--- a/arch/parisc/kernel/vdso.c
+++ b/arch/parisc/kernel/vdso.c
@@ -75,7 +75,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
 
 	map_base = mm->mmap_base;
 	if (current->flags & PF_RANDOMIZE)
-		map_base -= (get_random_int() & 0x1f) * PAGE_SIZE;
+		map_base -= prandom_u32_max(0x20) * PAGE_SIZE;
 
 	vdso_text_start = get_unmapped_area(NULL, map_base, vdso_text_len, 0, 0);
 
diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c
index c1c1ef9457fb..273c527868db 100644
--- a/arch/powerpc/crypto/crc-vpmsum_test.c
+++ b/arch/powerpc/crypto/crc-vpmsum_test.c
@@ -82,7 +82,7 @@ static int __init crc_test_init(void)
 
 			if (len <= offset)
 				continue;
-			prandom_bytes(data, len);
+			get_random_bytes(data, len);
 			len -= offset;
 
 			crypto_shash_update(crct10dif_shash, data+offset, len);
diff --git a/arch/powerpc/include/asm/syscalls.h b/arch/powerpc/include/asm/syscalls.h
index 9840d572da55..a1142496cd58 100644
--- a/arch/powerpc/include/asm/syscalls.h
+++ b/arch/powerpc/include/asm/syscalls.h
@@ -89,6 +89,22 @@ long compat_sys_rt_sigreturn(void);
  * responsible for combining parameter pairs.
  */
 
+#ifdef CONFIG_PPC32
+long sys_ppc_pread64(unsigned int fd,
+		     char __user *ubuf, compat_size_t count,
+		     u32 reg6, u32 pos1, u32 pos2);
+long sys_ppc_pwrite64(unsigned int fd,
+		      const char __user *ubuf, compat_size_t count,
+		      u32 reg6, u32 pos1, u32 pos2);
+long sys_ppc_readahead(int fd, u32 r4,
+		       u32 offset1, u32 offset2, u32 count);
+long sys_ppc_truncate64(const char __user *path, u32 reg4,
+		        unsigned long len1, unsigned long len2);
+long sys_ppc_ftruncate64(unsigned int fd, u32 reg4,
+			 unsigned long len1, unsigned long len2);
+long sys_ppc32_fadvise64(int fd, u32 unused, u32 offset1, u32 offset2,
+			 size_t len, int advice);
+#endif
 #ifdef CONFIG_COMPAT
 long compat_sys_mmap2(unsigned long addr, size_t len,
 		      unsigned long prot, unsigned long flags,
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index ee2d76cb3187..9b6146056e48 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -73,6 +73,7 @@ obj-y				:= cputable.o syscalls.o \
 obj-y				+= ptrace/
 obj-$(CONFIG_PPC64)		+= setup_64.o irq_64.o\
 				   paca.o nvram_64.o note.o
+obj-$(CONFIG_PPC32)		+= sys_ppc32.o
 obj-$(CONFIG_COMPAT)		+= sys_ppc32.o signal_32.o
 obj-$(CONFIG_VDSO32)		+= vdso32_wrapper.o
 obj-$(CONFIG_PPC_WATCHDOG)	+= watchdog.o
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S
index 904a5608cbe3..978a173eb339 100644
--- a/arch/powerpc/kernel/interrupt_64.S
+++ b/arch/powerpc/kernel/interrupt_64.S
@@ -538,7 +538,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel)
 	beq	.Lfast_kernel_interrupt_return_\srr\() // EE already disabled
 	lbz	r11,PACAIRQHAPPENED(r13)
 	andi.	r10,r11,PACA_IRQ_MUST_HARD_MASK
-	beq	1f // No HARD_MASK pending
+	beq	.Lfast_kernel_interrupt_return_\srr\() // No HARD_MASK pending
 
 	/* Must clear MSR_EE from _MSR */
 #ifdef CONFIG_PPC_BOOK3S
@@ -555,12 +555,23 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel)
 	b	.Lfast_kernel_interrupt_return_\srr\()
 
 .Linterrupt_return_\srr\()_soft_enabled:
+	/*
+	 * In the soft-enabled case, need to double-check that we have no
+	 * pending interrupts that might have come in before we reached the
+	 * restart section of code, and restart the exit so those can be
+	 * handled.
+	 *
+	 * If there are none, it is be possible that the interrupt still
+	 * has PACA_IRQ_HARD_DIS set, which needs to be cleared for the
+	 * interrupted context. This clear will not clobber a new pending
+	 * interrupt coming in, because we're in the restart section, so
+	 * such would return to the restart location.
+	 */
 #ifdef CONFIG_PPC_BOOK3S
 	lbz	r11,PACAIRQHAPPENED(r13)
 	andi.	r11,r11,(~PACA_IRQ_HARD_DIS)@l
 	bne-	interrupt_return_\srr\()_kernel_restart
 #endif
-1:
 	li	r11,0
 	stb	r11,PACAIRQHAPPENED(r13) // clear the possible HARD_DIS
 
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 40834ef84f0c..67da147fe34d 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -2303,6 +2303,6 @@ void notrace __ppc64_runlatch_off(void)
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
+		sp -= prandom_u32_max(PAGE_SIZE);
 	return sp & ~0xf;
 }
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index dcc3c9fd4cfd..1ab4a4d95aba 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -1,13 +1,23 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
+ * sys_ppc32.c: 32-bit system calls with complex calling conventions.
  *
  * Copyright (C) 2001 IBM
  * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
  *
- * These routines maintain argument size conversion between 32bit and 64bit
- * environment.
+ * 32-bit system calls with 64-bit arguments pass those in register pairs.
+ * This must be specially dealt with on 64-bit kernels. The compat_arg_u64_dual
+ * in generic compat syscalls is not always usable because the register
+ * pairing is constrained depending on preceding arguments.
+ *
+ * An analogous problem exists on 32-bit kernels with ARCH_HAS_SYSCALL_WRAPPER,
+ * the defined system call functions take the pt_regs as an argument, and there
+ * is a mapping macro which maps registers to arguments
+ * (SC_POWERPC_REGS_TO_ARGS) which also does not deal with these 64-bit
+ * arguments.
+ *
+ * This file contains these system calls.
  */
 
 #include <linux/kernel.h>
@@ -47,7 +57,17 @@
 #include <asm/syscalls.h>
 #include <asm/switch_to.h>
 
-COMPAT_SYSCALL_DEFINE6(ppc_pread64,
+#ifdef CONFIG_PPC32
+#define PPC32_SYSCALL_DEFINE4	SYSCALL_DEFINE4
+#define PPC32_SYSCALL_DEFINE5	SYSCALL_DEFINE5
+#define PPC32_SYSCALL_DEFINE6	SYSCALL_DEFINE6
+#else
+#define PPC32_SYSCALL_DEFINE4	COMPAT_SYSCALL_DEFINE4
+#define PPC32_SYSCALL_DEFINE5	COMPAT_SYSCALL_DEFINE5
+#define PPC32_SYSCALL_DEFINE6	COMPAT_SYSCALL_DEFINE6
+#endif
+
+PPC32_SYSCALL_DEFINE6(ppc_pread64,
 		       unsigned int, fd,
 		       char __user *, ubuf, compat_size_t, count,
 		       u32, reg6, u32, pos1, u32, pos2)
@@ -55,7 +75,7 @@ COMPAT_SYSCALL_DEFINE6(ppc_pread64,
 	return ksys_pread64(fd, ubuf, count, merge_64(pos1, pos2));
 }
 
-COMPAT_SYSCALL_DEFINE6(ppc_pwrite64,
+PPC32_SYSCALL_DEFINE6(ppc_pwrite64,
 		       unsigned int, fd,
 		       const char __user *, ubuf, compat_size_t, count,
 		       u32, reg6, u32, pos1, u32, pos2)
@@ -63,28 +83,28 @@ COMPAT_SYSCALL_DEFINE6(ppc_pwrite64,
 	return ksys_pwrite64(fd, ubuf, count, merge_64(pos1, pos2));
 }
 
-COMPAT_SYSCALL_DEFINE5(ppc_readahead,
+PPC32_SYSCALL_DEFINE5(ppc_readahead,
 		       int, fd, u32, r4,
 		       u32, offset1, u32, offset2, u32, count)
 {
 	return ksys_readahead(fd, merge_64(offset1, offset2), count);
 }
 
-COMPAT_SYSCALL_DEFINE4(ppc_truncate64,
+PPC32_SYSCALL_DEFINE4(ppc_truncate64,
 		       const char __user *, path, u32, reg4,
 		       unsigned long, len1, unsigned long, len2)
 {
 	return ksys_truncate(path, merge_64(len1, len2));
 }
 
-COMPAT_SYSCALL_DEFINE4(ppc_ftruncate64,
+PPC32_SYSCALL_DEFINE4(ppc_ftruncate64,
 		       unsigned int, fd, u32, reg4,
 		       unsigned long, len1, unsigned long, len2)
 {
 	return ksys_ftruncate(fd, merge_64(len1, len2));
 }
 
-COMPAT_SYSCALL_DEFINE6(ppc32_fadvise64,
+PPC32_SYSCALL_DEFINE6(ppc32_fadvise64,
 		       int, fd, u32, unused, u32, offset1, u32, offset2,
 		       size_t, len, int, advice)
 {
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
index 2bca64f96164..e9e0df4f9a61 100644
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -228,8 +228,10 @@
 176	64	rt_sigtimedwait			sys_rt_sigtimedwait
 177	nospu 	rt_sigqueueinfo			sys_rt_sigqueueinfo		compat_sys_rt_sigqueueinfo
 178	nospu 	rt_sigsuspend			sys_rt_sigsuspend		compat_sys_rt_sigsuspend
-179	common	pread64				sys_pread64			compat_sys_ppc_pread64
-180	common	pwrite64			sys_pwrite64			compat_sys_ppc_pwrite64
+179	32	pread64				sys_ppc_pread64			compat_sys_ppc_pread64
+179	64	pread64				sys_pread64
+180	32	pwrite64			sys_ppc_pwrite64		compat_sys_ppc_pwrite64
+180	64	pwrite64			sys_pwrite64
 181	common	chown				sys_chown
 182	common	getcwd				sys_getcwd
 183	common	capget				sys_capget
@@ -242,10 +244,11 @@
 188	common 	putpmsg				sys_ni_syscall
 189	nospu	vfork				sys_vfork
 190	common	ugetrlimit			sys_getrlimit			compat_sys_getrlimit
-191	common	readahead			sys_readahead			compat_sys_ppc_readahead
+191	32	readahead			sys_ppc_readahead		compat_sys_ppc_readahead
+191	64	readahead			sys_readahead
 192	32	mmap2				sys_mmap2			compat_sys_mmap2
-193	32	truncate64			sys_truncate64			compat_sys_ppc_truncate64
-194	32	ftruncate64			sys_ftruncate64			compat_sys_ppc_ftruncate64
+193	32	truncate64			sys_ppc_truncate64		compat_sys_ppc_truncate64
+194	32	ftruncate64			sys_ppc_ftruncate64		compat_sys_ppc_ftruncate64
 195	32	stat64				sys_stat64
 196	32	lstat64				sys_lstat64
 197	32	fstat64				sys_fstat64
@@ -288,7 +291,8 @@
 230	common	io_submit			sys_io_submit			compat_sys_io_submit
 231	common	io_cancel			sys_io_cancel
 232	nospu	set_tid_address			sys_set_tid_address
-233	common	fadvise64			sys_fadvise64			compat_sys_ppc32_fadvise64
+233	32	fadvise64			sys_ppc32_fadvise64		compat_sys_ppc32_fadvise64
+233	64	fadvise64			sys_fadvise64
 234	nospu	exit_group			sys_exit_group
 235	nospu	lookup_dcookie			sys_lookup_dcookie		compat_sys_lookup_dcookie
 236	common	epoll_create			sys_epoll_create
diff --git a/arch/powerpc/kvm/book3s_hv_uvmem.c b/arch/powerpc/kvm/book3s_hv_uvmem.c
index 598006301620..e2f11f9c3f2a 100644
--- a/arch/powerpc/kvm/book3s_hv_uvmem.c
+++ b/arch/powerpc/kvm/book3s_hv_uvmem.c
@@ -508,10 +508,10 @@ unsigned long kvmppc_h_svm_init_start(struct kvm *kvm)
 static int __kvmppc_svm_page_out(struct vm_area_struct *vma,
 		unsigned long start,
 		unsigned long end, unsigned long page_shift,
-		struct kvm *kvm, unsigned long gpa)
+		struct kvm *kvm, unsigned long gpa, struct page *fault_page)
 {
 	unsigned long src_pfn, dst_pfn = 0;
-	struct migrate_vma mig;
+	struct migrate_vma mig = { 0 };
 	struct page *dpage, *spage;
 	struct kvmppc_uvmem_page_pvt *pvt;
 	unsigned long pfn;
@@ -525,6 +525,7 @@ static int __kvmppc_svm_page_out(struct vm_area_struct *vma,
 	mig.dst = &dst_pfn;
 	mig.pgmap_owner = &kvmppc_uvmem_pgmap;
 	mig.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE;
+	mig.fault_page = fault_page;
 
 	/* The requested page is already paged-out, nothing to do */
 	if (!kvmppc_gfn_is_uvmem_pfn(gpa >> page_shift, kvm, NULL))
@@ -580,12 +581,14 @@ out_finalize:
 static inline int kvmppc_svm_page_out(struct vm_area_struct *vma,
 				      unsigned long start, unsigned long end,
 				      unsigned long page_shift,
-				      struct kvm *kvm, unsigned long gpa)
+				      struct kvm *kvm, unsigned long gpa,
+				      struct page *fault_page)
 {
 	int ret;
 
 	mutex_lock(&kvm->arch.uvmem_lock);
-	ret = __kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa);
+	ret = __kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa,
+				fault_page);
 	mutex_unlock(&kvm->arch.uvmem_lock);
 
 	return ret;
@@ -634,7 +637,7 @@ void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *slot,
 			pvt->remove_gfn = true;
 
 			if (__kvmppc_svm_page_out(vma, addr, addr + PAGE_SIZE,
-						  PAGE_SHIFT, kvm, pvt->gpa))
+						  PAGE_SHIFT, kvm, pvt->gpa, NULL))
 				pr_err("Can't page out gpa:0x%lx addr:0x%lx\n",
 				       pvt->gpa, addr);
 		} else {
@@ -715,7 +718,7 @@ static struct page *kvmppc_uvmem_get_page(unsigned long gpa, struct kvm *kvm)
 
 	dpage = pfn_to_page(uvmem_pfn);
 	dpage->zone_device_data = pvt;
-	lock_page(dpage);
+	zone_device_page_init(dpage);
 	return dpage;
 out_clear:
 	spin_lock(&kvmppc_uvmem_bitmap_lock);
@@ -736,7 +739,7 @@ static int kvmppc_svm_page_in(struct vm_area_struct *vma,
 		bool pagein)
 {
 	unsigned long src_pfn, dst_pfn = 0;
-	struct migrate_vma mig;
+	struct migrate_vma mig = { 0 };
 	struct page *spage;
 	unsigned long pfn;
 	struct page *dpage;
@@ -994,7 +997,7 @@ static vm_fault_t kvmppc_uvmem_migrate_to_ram(struct vm_fault *vmf)
 
 	if (kvmppc_svm_page_out(vmf->vma, vmf->address,
 				vmf->address + PAGE_SIZE, PAGE_SHIFT,
-				pvt->kvm, pvt->gpa))
+				pvt->kvm, pvt->gpa, vmf->page))
 		return VM_FAULT_SIGBUS;
 	else
 		return 0;
@@ -1065,7 +1068,7 @@ kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gpa,
 	if (!vma || vma->vm_start > start || vma->vm_end < end)
 		goto out;
 
-	if (!kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa))
+	if (!kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa, NULL))
 		ret = H_SUCCESS;
 out:
 	mmap_read_unlock(kvm->mm);
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 14e143b946a3..92310202bdd7 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -7,7 +7,7 @@ obj-y			:= lpar.o hvCall.o nvram.o reconfig.o \
 			   setup.o iommu.o event_sources.o ras.o \
 			   firmware.o power.o dlpar.o mobility.o rng.o \
 			   pci.o pci_dlpar.o eeh_pseries.o msi.o \
-			   papr_platform_attributes.o
+			   papr_platform_attributes.o dtl.o
 obj-$(CONFIG_SMP)	+= smp.o
 obj-$(CONFIG_KEXEC_CORE)	+= kexec.o
 obj-$(CONFIG_PSERIES_ENERGY)	+= pseries_energy.o
@@ -19,7 +19,6 @@ obj-$(CONFIG_HVC_CONSOLE)	+= hvconsole.o
 obj-$(CONFIG_HVCS)		+= hvcserver.o
 obj-$(CONFIG_HCALL_STATS)	+= hvCall_inst.o
 obj-$(CONFIG_CMM)		+= cmm.o
-obj-$(CONFIG_DTL)		+= dtl.o
 obj-$(CONFIG_IO_EVENT_IRQ)	+= io_event_irq.o
 obj-$(CONFIG_LPARCFG)		+= lparcfg.o
 obj-$(CONFIG_IBMVIO)		+= vio.o
diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c
index 1b1977bc78e7..3f1cdccebc9c 100644
--- a/arch/powerpc/platforms/pseries/dtl.c
+++ b/arch/powerpc/platforms/pseries/dtl.c
@@ -18,6 +18,7 @@
 #include <asm/plpar_wrappers.h>
 #include <asm/machdep.h>
 
+#ifdef CONFIG_DTL
 struct dtl {
 	struct dtl_entry	*buf;
 	int			cpu;
@@ -58,78 +59,6 @@ static DEFINE_PER_CPU(struct dtl_ring, dtl_rings);
 static atomic_t dtl_count;
 
 /*
- * Scan the dispatch trace log and count up the stolen time.
- * Should be called with interrupts disabled.
- */
-static notrace u64 scan_dispatch_log(u64 stop_tb)
-{
-	u64 i = local_paca->dtl_ridx;
-	struct dtl_entry *dtl = local_paca->dtl_curr;
-	struct dtl_entry *dtl_end = local_paca->dispatch_log_end;
-	struct lppaca *vpa = local_paca->lppaca_ptr;
-	u64 tb_delta;
-	u64 stolen = 0;
-	u64 dtb;
-
-	if (!dtl)
-		return 0;
-
-	if (i == be64_to_cpu(vpa->dtl_idx))
-		return 0;
-	while (i < be64_to_cpu(vpa->dtl_idx)) {
-		dtb = be64_to_cpu(dtl->timebase);
-		tb_delta = be32_to_cpu(dtl->enqueue_to_dispatch_time) +
-			be32_to_cpu(dtl->ready_to_enqueue_time);
-		barrier();
-		if (i + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) {
-			/* buffer has overflowed */
-			i = be64_to_cpu(vpa->dtl_idx) - N_DISPATCH_LOG;
-			dtl = local_paca->dispatch_log + (i % N_DISPATCH_LOG);
-			continue;
-		}
-		if (dtb > stop_tb)
-			break;
-		if (dtl_consumer)
-			dtl_consumer(dtl, i);
-		stolen += tb_delta;
-		++i;
-		++dtl;
-		if (dtl == dtl_end)
-			dtl = local_paca->dispatch_log;
-	}
-	local_paca->dtl_ridx = i;
-	local_paca->dtl_curr = dtl;
-	return stolen;
-}
-
-/*
- * Accumulate stolen time by scanning the dispatch trace log.
- * Called on entry from user mode.
- */
-void notrace pseries_accumulate_stolen_time(void)
-{
-	u64 sst, ust;
-	struct cpu_accounting_data *acct = &local_paca->accounting;
-
-	sst = scan_dispatch_log(acct->starttime_user);
-	ust = scan_dispatch_log(acct->starttime);
-	acct->stime -= sst;
-	acct->utime -= ust;
-	acct->steal_time += ust + sst;
-}
-
-u64 pseries_calculate_stolen_time(u64 stop_tb)
-{
-	if (!firmware_has_feature(FW_FEATURE_SPLPAR))
-		return 0;
-
-	if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx))
-		return scan_dispatch_log(stop_tb);
-
-	return 0;
-}
-
-/*
  * The cpu accounting code controls the DTL ring buffer, and we get
  * given entries as they are processed.
  */
@@ -436,3 +365,81 @@ static int dtl_init(void)
 	return 0;
 }
 machine_arch_initcall(pseries, dtl_init);
+#endif /* CONFIG_DTL */
+
+#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
+/*
+ * Scan the dispatch trace log and count up the stolen time.
+ * Should be called with interrupts disabled.
+ */
+static notrace u64 scan_dispatch_log(u64 stop_tb)
+{
+	u64 i = local_paca->dtl_ridx;
+	struct dtl_entry *dtl = local_paca->dtl_curr;
+	struct dtl_entry *dtl_end = local_paca->dispatch_log_end;
+	struct lppaca *vpa = local_paca->lppaca_ptr;
+	u64 tb_delta;
+	u64 stolen = 0;
+	u64 dtb;
+
+	if (!dtl)
+		return 0;
+
+	if (i == be64_to_cpu(vpa->dtl_idx))
+		return 0;
+	while (i < be64_to_cpu(vpa->dtl_idx)) {
+		dtb = be64_to_cpu(dtl->timebase);
+		tb_delta = be32_to_cpu(dtl->enqueue_to_dispatch_time) +
+			be32_to_cpu(dtl->ready_to_enqueue_time);
+		barrier();
+		if (i + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) {
+			/* buffer has overflowed */
+			i = be64_to_cpu(vpa->dtl_idx) - N_DISPATCH_LOG;
+			dtl = local_paca->dispatch_log + (i % N_DISPATCH_LOG);
+			continue;
+		}
+		if (dtb > stop_tb)
+			break;
+#ifdef CONFIG_DTL
+		if (dtl_consumer)
+			dtl_consumer(dtl, i);
+#endif
+		stolen += tb_delta;
+		++i;
+		++dtl;
+		if (dtl == dtl_end)
+			dtl = local_paca->dispatch_log;
+	}
+	local_paca->dtl_ridx = i;
+	local_paca->dtl_curr = dtl;
+	return stolen;
+}
+
+/*
+ * Accumulate stolen time by scanning the dispatch trace log.
+ * Called on entry from user mode.
+ */
+void notrace pseries_accumulate_stolen_time(void)
+{
+	u64 sst, ust;
+	struct cpu_accounting_data *acct = &local_paca->accounting;
+
+	sst = scan_dispatch_log(acct->starttime_user);
+	ust = scan_dispatch_log(acct->starttime);
+	acct->stime -= sst;
+	acct->utime -= ust;
+	acct->steal_time += ust + sst;
+}
+
+u64 pseries_calculate_stolen_time(u64 stop_tb)
+{
+	if (!firmware_has_feature(FW_FEATURE_SPLPAR))
+		return 0;
+
+	if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx))
+		return scan_dispatch_log(stop_tb);
+
+	return 0;
+}
+
+#endif
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 56976e5674ee..6b48a3ae9843 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -70,6 +70,7 @@ config RISCV
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_TIME_VSYSCALL if MMU && 64BIT
 	select GENERIC_VDSO_TIME_NS if HAVE_GENERIC_VDSO
+	select HARDIRQS_SW_RESEND
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
 	select HAVE_ARCH_JUMP_LABEL_RELATIVE if !XIP_KERNEL
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index e9bd21816ea9..1c8ec656e916 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -37,6 +37,7 @@ else
 endif
 
 ifeq ($(CONFIG_LD_IS_LLD),y)
+ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 150000; echo $$?),0)
 	KBUILD_CFLAGS += -mno-relax
 	KBUILD_AFLAGS += -mno-relax
 ifndef CONFIG_AS_IS_LLVM
@@ -44,6 +45,7 @@ ifndef CONFIG_AS_IS_LLVM
 	KBUILD_AFLAGS += -Wa,-mno-relax
 endif
 endif
+endif
 
 # ISA string setting
 riscv-march-$(CONFIG_ARCH_RV32I)	:= rv32ima
diff --git a/arch/riscv/boot/dts/microchip/Makefile b/arch/riscv/boot/dts/microchip/Makefile
index 39aae7b04f1c..7427a20934f3 100644
--- a/arch/riscv/boot/dts/microchip/Makefile
+++ b/arch/riscv/boot/dts/microchip/Makefile
@@ -1,4 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-icicle-kit.dtb
+dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-m100pfsevp.dtb
 dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-polarberry.dtb
+dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-sev-kit.dtb
 obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))
diff --git a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
index 0d28858b83f2..24b1cfb9a73e 100644
--- a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
@@ -2,20 +2,21 @@
 /* Copyright (c) 2020-2021 Microchip Technology Inc */
 
 / {
-	compatible = "microchip,mpfs-icicle-reference-rtlv2203", "microchip,mpfs";
+	compatible = "microchip,mpfs-icicle-reference-rtlv2210", "microchip,mpfs-icicle-kit",
+		     "microchip,mpfs";
 
-	core_pwm0: pwm@41000000 {
+	core_pwm0: pwm@40000000 {
 		compatible = "microchip,corepwm-rtl-v4";
-		reg = <0x0 0x41000000 0x0 0xF0>;
+		reg = <0x0 0x40000000 0x0 0xF0>;
 		microchip,sync-update-mask = /bits/ 32 <0>;
 		#pwm-cells = <2>;
 		clocks = <&fabric_clk3>;
 		status = "disabled";
 	};
 
-	i2c2: i2c@44000000 {
+	i2c2: i2c@40000200 {
 		compatible = "microchip,corei2c-rtl-v7";
-		reg = <0x0 0x44000000 0x0 0x1000>;
+		reg = <0x0 0x40000200 0x0 0x100>;
 		#address-cells = <1>;
 		#size-cells = <0>;
 		clocks = <&fabric_clk3>;
@@ -28,7 +29,7 @@
 	fabric_clk3: fabric-clk3 {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
-		clock-frequency = <62500000>;
+		clock-frequency = <50000000>;
 	};
 
 	fabric_clk1: fabric-clk1 {
@@ -36,4 +37,34 @@
 		#clock-cells = <0>;
 		clock-frequency = <125000000>;
 	};
+
+	pcie: pcie@3000000000 {
+		compatible = "microchip,pcie-host-1.0";
+		#address-cells = <0x3>;
+		#interrupt-cells = <0x1>;
+		#size-cells = <0x2>;
+		device_type = "pci";
+		reg = <0x30 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
+		reg-names = "cfg", "apb";
+		bus-range = <0x0 0x7f>;
+		interrupt-parent = <&plic>;
+		interrupts = <119>;
+		interrupt-map = <0 0 0 1 &pcie_intc 0>,
+				<0 0 0 2 &pcie_intc 1>,
+				<0 0 0 3 &pcie_intc 2>,
+				<0 0 0 4 &pcie_intc 3>;
+		interrupt-map-mask = <0 0 0 7>;
+		clocks = <&fabric_clk1>, <&fabric_clk3>;
+		clock-names = "fic1", "fic3";
+		ranges = <0x3000000 0x0 0x8000000 0x30 0x8000000 0x0 0x80000000>;
+		dma-ranges = <0x02000000 0x0 0x00000000 0x0 0x00000000 0x1 0x00000000>;
+		msi-parent = <&pcie>;
+		msi-controller;
+		status = "disabled";
+		pcie_intc: interrupt-controller {
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+		};
+	};
 };
diff --git a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
index f3f87ed2007f..ec7b7c2a3ce2 100644
--- a/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
+++ b/arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
@@ -11,7 +11,8 @@
 
 / {
 	model = "Microchip PolarFire-SoC Icicle Kit";
-	compatible = "microchip,mpfs-icicle-kit", "microchip,mpfs";
+	compatible = "microchip,mpfs-icicle-reference-rtlv2210", "microchip,mpfs-icicle-kit",
+		     "microchip,mpfs";
 
 	aliases {
 		ethernet0 = &mac1;
@@ -32,15 +33,26 @@
 
 	ddrc_cache_lo: memory@80000000 {
 		device_type = "memory";
-		reg = <0x0 0x80000000 0x0 0x2e000000>;
+		reg = <0x0 0x80000000 0x0 0x40000000>;
 		status = "okay";
 	};
 
 	ddrc_cache_hi: memory@1000000000 {
 		device_type = "memory";
-		reg = <0x10 0x0 0x0 0x40000000>;
+		reg = <0x10 0x40000000 0x0 0x40000000>;
 		status = "okay";
 	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		hss_payload: region@BFC00000 {
+			reg = <0x0 0xBFC00000 0x0 0x400000>;
+			no-map;
+		};
+	};
 };
 
 &core_pwm0 {
diff --git a/arch/riscv/boot/dts/microchip/mpfs-m100pfs-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-m100pfs-fabric.dtsi
new file mode 100644
index 000000000000..7b9ee13b6a3a
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/mpfs-m100pfs-fabric.dtsi
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2022 Microchip Technology Inc */
+
+/ {
+	fabric_clk3: fabric-clk3 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <62500000>;
+	};
+
+	fabric_clk1: fabric-clk1 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <125000000>;
+	};
+
+	pcie: pcie@2000000000 {
+		compatible = "microchip,pcie-host-1.0";
+		#address-cells = <0x3>;
+		#interrupt-cells = <0x1>;
+		#size-cells = <0x2>;
+		device_type = "pci";
+		reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
+		reg-names = "cfg", "apb";
+		bus-range = <0x0 0x7f>;
+		interrupt-parent = <&plic>;
+		interrupts = <119>;
+		interrupt-map = <0 0 0 1 &pcie_intc 0>,
+				<0 0 0 2 &pcie_intc 1>,
+				<0 0 0 3 &pcie_intc 2>,
+				<0 0 0 4 &pcie_intc 3>;
+		interrupt-map-mask = <0 0 0 7>;
+		clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
+		clock-names = "fic0", "fic1", "fic3";
+		ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
+		msi-parent = <&pcie>;
+		msi-controller;
+		status = "disabled";
+		pcie_intc: interrupt-controller {
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+		};
+	};
+};
diff --git a/arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts b/arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts
new file mode 100644
index 000000000000..184cb36a175e
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts
@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Original all-in-one devicetree:
+ * Copyright (C) 2021-2022 - Wolfgang Grandegger <wg@aries-embedded.de>
+ * Rewritten to use includes:
+ * Copyright (C) 2022 - Conor Dooley <conor.dooley@microchip.com>
+ */
+/dts-v1/;
+
+#include "mpfs.dtsi"
+#include "mpfs-m100pfs-fabric.dtsi"
+
+/* Clock frequency (in Hz) of the rtcclk */
+#define MTIMER_FREQ	1000000
+
+/ {
+	model = "Aries Embedded M100PFEVPS";
+	compatible = "aries,m100pfsevp", "microchip,mpfs";
+
+	aliases {
+		ethernet0 = &mac0;
+		ethernet1 = &mac1;
+		serial0 = &mmuart0;
+		serial1 = &mmuart1;
+		serial2 = &mmuart2;
+		serial3 = &mmuart3;
+		serial4 = &mmuart4;
+		gpio0 = &gpio0;
+		gpio1 = &gpio2;
+	};
+
+	chosen {
+		stdout-path = "serial1:115200n8";
+	};
+
+	cpus {
+		timebase-frequency = <MTIMER_FREQ>;
+	};
+
+	ddrc_cache_lo: memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x0 0x40000000>;
+	};
+	ddrc_cache_hi: memory@1040000000 {
+		device_type = "memory";
+		reg = <0x10 0x40000000 0x0 0x40000000>;
+	};
+};
+
+&can0 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+};
+
+&i2c1 {
+	status = "okay";
+};
+
+&gpio0 {
+	interrupts = <13>, <14>, <15>, <16>,
+		     <17>, <18>, <19>, <20>,
+		     <21>, <22>, <23>, <24>,
+		     <25>, <26>;
+	ngpios = <14>;
+	status = "okay";
+
+	pmic-irq-hog {
+		gpio-hog;
+		gpios = <13 0>;
+		input;
+	};
+
+	/* Set to low for eMMC, high for SD-card */
+	mmc-sel-hog {
+		gpio-hog;
+		gpios = <12 0>;
+		output-high;
+	};
+};
+
+&gpio2 {
+	interrupts = <13>, <14>, <15>, <16>,
+		     <17>, <18>, <19>, <20>,
+		     <21>, <22>, <23>, <24>,
+		     <25>, <26>, <27>, <28>,
+		     <29>, <30>, <31>, <32>,
+		     <33>, <34>, <35>, <36>,
+		     <37>, <38>, <39>, <40>,
+		     <41>, <42>, <43>, <44>;
+	status = "okay";
+};
+
+&mac0 {
+	status = "okay";
+	phy-mode = "gmii";
+	phy-handle = <&phy0>;
+	phy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&mac1 {
+	status = "okay";
+	phy-mode = "gmii";
+	phy-handle = <&phy1>;
+	phy1: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&mbox {
+	status = "okay";
+};
+
+&mmc {
+	max-frequency = <50000000>;
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	no-1-8-v;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	disable-wp;
+	status = "okay";
+};
+
+&mmuart1 {
+	status = "okay";
+};
+
+&mmuart2 {
+	status = "okay";
+};
+
+&mmuart3 {
+	status = "okay";
+};
+
+&mmuart4 {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&qspi {
+	status = "okay";
+};
+
+&refclk {
+	clock-frequency = <125000000>;
+};
+
+&rtc {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+};
+
+&spi1 {
+	status = "okay";
+};
+
+&syscontroller {
+	status = "okay";
+};
+
+&usb {
+	status = "okay";
+	dr_mode = "host";
+};
diff --git a/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
index 49380c428ec9..67303bc0e451 100644
--- a/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
@@ -13,4 +13,33 @@
 		#clock-cells = <0>;
 		clock-frequency = <125000000>;
 	};
+
+	pcie: pcie@2000000000 {
+		compatible = "microchip,pcie-host-1.0";
+		#address-cells = <0x3>;
+		#interrupt-cells = <0x1>;
+		#size-cells = <0x2>;
+		device_type = "pci";
+		reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
+		reg-names = "cfg", "apb";
+		bus-range = <0x0 0x7f>;
+		interrupt-parent = <&plic>;
+		interrupts = <119>;
+		interrupt-map = <0 0 0 1 &pcie_intc 0>,
+				<0 0 0 2 &pcie_intc 1>,
+				<0 0 0 3 &pcie_intc 2>,
+				<0 0 0 4 &pcie_intc 3>;
+		interrupt-map-mask = <0 0 0 7>;
+		clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
+		clock-names = "fic0", "fic1", "fic3";
+		ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
+		msi-parent = <&pcie>;
+		msi-controller;
+		status = "disabled";
+		pcie_intc: interrupt-controller {
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+		};
+	};
 };
diff --git a/arch/riscv/boot/dts/microchip/mpfs-sev-kit-fabric.dtsi b/arch/riscv/boot/dts/microchip/mpfs-sev-kit-fabric.dtsi
new file mode 100644
index 000000000000..8545baf4d129
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/mpfs-sev-kit-fabric.dtsi
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2022 Microchip Technology Inc */
+
+/ {
+	fabric_clk3: fabric-clk3 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <0>;
+	};
+
+	fabric_clk1: fabric-clk1 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <125000000>;
+	};
+
+	pcie: pcie@2000000000 {
+		compatible = "microchip,pcie-host-1.0";
+		#address-cells = <0x3>;
+		#interrupt-cells = <0x1>;
+		#size-cells = <0x2>;
+		device_type = "pci";
+		reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
+		reg-names = "cfg", "apb";
+		bus-range = <0x0 0x7f>;
+		interrupt-parent = <&plic>;
+		interrupts = <119>;
+		interrupt-map = <0 0 0 1 &pcie_intc 0>,
+				<0 0 0 2 &pcie_intc 1>,
+				<0 0 0 3 &pcie_intc 2>,
+				<0 0 0 4 &pcie_intc 3>;
+		interrupt-map-mask = <0 0 0 7>;
+		clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
+		clock-names = "fic0", "fic1", "fic3";
+		ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
+		msi-parent = <&pcie>;
+		msi-controller;
+		status = "disabled";
+		pcie_intc: interrupt-controller {
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+			interrupt-controller;
+		};
+	};
+};
diff --git a/arch/riscv/boot/dts/microchip/mpfs-sev-kit.dts b/arch/riscv/boot/dts/microchip/mpfs-sev-kit.dts
new file mode 100644
index 000000000000..013cb666c72d
--- /dev/null
+++ b/arch/riscv/boot/dts/microchip/mpfs-sev-kit.dts
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2022 Microchip Technology Inc */
+
+/dts-v1/;
+
+#include "mpfs.dtsi"
+#include "mpfs-sev-kit-fabric.dtsi"
+
+/* Clock frequency (in Hz) of the rtcclk */
+#define MTIMER_FREQ		1000000
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	model = "Microchip PolarFire-SoC SEV Kit";
+	compatible = "microchip,mpfs-sev-kit", "microchip,mpfs";
+
+	aliases {
+		ethernet0 = &mac1;
+		serial0 = &mmuart0;
+		serial1 = &mmuart1;
+		serial2 = &mmuart2;
+		serial3 = &mmuart3;
+		serial4 = &mmuart4;
+	};
+
+	chosen {
+		stdout-path = "serial1:115200n8";
+	};
+
+	cpus {
+		timebase-frequency = <MTIMER_FREQ>;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		fabricbuf0ddrc: buffer@80000000 {
+			compatible = "shared-dma-pool";
+			reg = <0x0 0x80000000 0x0 0x2000000>;
+		};
+
+		fabricbuf1ddrnc: buffer@c4000000 {
+			compatible = "shared-dma-pool";
+			reg = <0x0 0xc4000000 0x0 0x4000000>;
+		};
+
+		fabricbuf2ddrncwcb: buffer@d4000000 {
+			compatible = "shared-dma-pool";
+			reg = <0x0 0xd4000000 0x0 0x4000000>;
+		};
+	};
+
+	ddrc_cache: memory@1000000000 {
+		device_type = "memory";
+		reg = <0x10 0x0 0x0 0x76000000>;
+	};
+};
+
+&i2c0 {
+	status = "okay";
+};
+
+&gpio2 {
+	interrupts = <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>,
+		     <53>, <53>, <53>, <53>;
+	status = "okay";
+};
+
+&mac0 {
+	status = "okay";
+	phy-mode = "sgmii";
+	phy-handle = <&phy0>;
+	phy1: ethernet-phy@9 {
+		reg = <9>;
+	};
+	phy0: ethernet-phy@8 {
+		reg = <8>;
+	};
+};
+
+&mac1 {
+	status = "okay";
+	phy-mode = "sgmii";
+	phy-handle = <&phy1>;
+};
+
+&mbox {
+	status = "okay";
+};
+
+&mmc {
+	status = "okay";
+	bus-width = <4>;
+	disable-wp;
+	cap-sd-highspeed;
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+};
+
+&mmuart1 {
+	status = "okay";
+};
+
+&mmuart2 {
+	status = "okay";
+};
+
+&mmuart3 {
+	status = "okay";
+};
+
+&mmuart4 {
+	status = "okay";
+};
+
+&refclk {
+	clock-frequency = <125000000>;
+};
+
+&rtc {
+	status = "okay";
+};
+
+&syscontroller {
+	status = "okay";
+};
+
+&usb {
+	status = "okay";
+	dr_mode = "otg";
+};
diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 6d9d455fa160..8f463399a568 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -330,7 +330,7 @@
 		};
 
 		qspi: spi@21000000 {
-			compatible = "microchip,mpfs-qspi";
+			compatible = "microchip,mpfs-qspi", "microchip,coreqspi-rtl-v2";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x0 0x21000000 0x0 0x1000>;
@@ -464,35 +464,6 @@
 			status = "disabled";
 		};
 
-		pcie: pcie@2000000000 {
-			compatible = "microchip,pcie-host-1.0";
-			#address-cells = <0x3>;
-			#interrupt-cells = <0x1>;
-			#size-cells = <0x2>;
-			device_type = "pci";
-			reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
-			reg-names = "cfg", "apb";
-			bus-range = <0x0 0x7f>;
-			interrupt-parent = <&plic>;
-			interrupts = <119>;
-			interrupt-map = <0 0 0 1 &pcie_intc 0>,
-					<0 0 0 2 &pcie_intc 1>,
-					<0 0 0 3 &pcie_intc 2>,
-					<0 0 0 4 &pcie_intc 3>;
-			interrupt-map-mask = <0 0 0 7>;
-			clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
-			clock-names = "fic0", "fic1", "fic3";
-			ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
-			msi-parent = <&pcie>;
-			msi-controller;
-			status = "disabled";
-			pcie_intc: interrupt-controller {
-				#address-cells = <0>;
-				#interrupt-cells = <1>;
-				interrupt-controller;
-			};
-		};
-
 		mbox: mailbox@37020000 {
 			compatible = "microchip,mpfs-mailbox";
 			reg = <0x0 0x37020000 0x0 0x1000>, <0x0 0x2000318C 0x0 0x40>;
diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c
index 96648c176f37..21546937db39 100644
--- a/arch/riscv/errata/thead/errata.c
+++ b/arch/riscv/errata/thead/errata.c
@@ -17,6 +17,9 @@
 static bool errata_probe_pbmt(unsigned int stage,
 			      unsigned long arch_id, unsigned long impid)
 {
+	if (!IS_ENABLED(CONFIG_ERRATA_THEAD_PBMT))
+		return false;
+
 	if (arch_id != 0 || impid != 0)
 		return false;
 
@@ -30,7 +33,9 @@ static bool errata_probe_pbmt(unsigned int stage,
 static bool errata_probe_cmo(unsigned int stage,
 			     unsigned long arch_id, unsigned long impid)
 {
-#ifdef CONFIG_ERRATA_THEAD_CMO
+	if (!IS_ENABLED(CONFIG_ERRATA_THEAD_CMO))
+		return false;
+
 	if (arch_id != 0 || impid != 0)
 		return false;
 
@@ -40,9 +45,6 @@ static bool errata_probe_cmo(unsigned int stage,
 	riscv_cbom_block_size = L1_CACHE_BYTES;
 	riscv_noncoherent_supported();
 	return true;
-#else
-	return false;
-#endif
 }
 
 static u32 thead_errata_probe(unsigned int stage,
@@ -51,10 +53,10 @@ static u32 thead_errata_probe(unsigned int stage,
 	u32 cpu_req_errata = 0;
 
 	if (errata_probe_pbmt(stage, archid, impid))
-		cpu_req_errata |= (1U << ERRATA_THEAD_PBMT);
+		cpu_req_errata |= BIT(ERRATA_THEAD_PBMT);
 
 	if (errata_probe_cmo(stage, archid, impid))
-		cpu_req_errata |= (1U << ERRATA_THEAD_CMO);
+		cpu_req_errata |= BIT(ERRATA_THEAD_CMO);
 
 	return cpu_req_errata;
 }
diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h
index 273ece6b622f..8a5c246b0a21 100644
--- a/arch/riscv/include/asm/cacheflush.h
+++ b/arch/riscv/include/asm/cacheflush.h
@@ -55,6 +55,8 @@ static inline void riscv_init_cbom_blocksize(void) { }
 
 #ifdef CONFIG_RISCV_DMA_NONCOHERENT
 void riscv_noncoherent_supported(void);
+#else
+static inline void riscv_noncoherent_supported(void) {}
 #endif
 
 /*
diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h
index 14fc7342490b..e7acffdf21d2 100644
--- a/arch/riscv/include/asm/elf.h
+++ b/arch/riscv/include/asm/elf.h
@@ -99,6 +99,10 @@ do {								\
 		get_cache_size(2, CACHE_TYPE_UNIFIED));		\
 	NEW_AUX_ENT(AT_L2_CACHEGEOMETRY,			\
 		get_cache_geometry(2, CACHE_TYPE_UNIFIED));	\
+	NEW_AUX_ENT(AT_L3_CACHESIZE,				\
+		get_cache_size(3, CACHE_TYPE_UNIFIED));		\
+	NEW_AUX_ENT(AT_L3_CACHEGEOMETRY,			\
+		get_cache_geometry(3, CACHE_TYPE_UNIFIED));	\
 } while (0)
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES
 struct linux_binprm;
diff --git a/arch/riscv/include/asm/io.h b/arch/riscv/include/asm/io.h
index 69605a474270..92080a227937 100644
--- a/arch/riscv/include/asm/io.h
+++ b/arch/riscv/include/asm/io.h
@@ -101,9 +101,9 @@ __io_reads_ins(reads, u32, l, __io_br(), __io_ar(addr))
 __io_reads_ins(ins,  u8, b, __io_pbr(), __io_par(addr))
 __io_reads_ins(ins, u16, w, __io_pbr(), __io_par(addr))
 __io_reads_ins(ins, u32, l, __io_pbr(), __io_par(addr))
-#define insb(addr, buffer, count) __insb((void __iomem *)(long)addr, buffer, count)
-#define insw(addr, buffer, count) __insw((void __iomem *)(long)addr, buffer, count)
-#define insl(addr, buffer, count) __insl((void __iomem *)(long)addr, buffer, count)
+#define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
+#define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
+#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
 
 __io_writes_outs(writes,  u8, b, __io_bw(), __io_aw())
 __io_writes_outs(writes, u16, w, __io_bw(), __io_aw())
@@ -115,22 +115,22 @@ __io_writes_outs(writes, u32, l, __io_bw(), __io_aw())
 __io_writes_outs(outs,  u8, b, __io_pbw(), __io_paw())
 __io_writes_outs(outs, u16, w, __io_pbw(), __io_paw())
 __io_writes_outs(outs, u32, l, __io_pbw(), __io_paw())
-#define outsb(addr, buffer, count) __outsb((void __iomem *)(long)addr, buffer, count)
-#define outsw(addr, buffer, count) __outsw((void __iomem *)(long)addr, buffer, count)
-#define outsl(addr, buffer, count) __outsl((void __iomem *)(long)addr, buffer, count)
+#define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
+#define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
+#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
 
 #ifdef CONFIG_64BIT
 __io_reads_ins(reads, u64, q, __io_br(), __io_ar(addr))
 #define readsq(addr, buffer, count) __readsq(addr, buffer, count)
 
 __io_reads_ins(ins, u64, q, __io_pbr(), __io_par(addr))
-#define insq(addr, buffer, count) __insq((void __iomem *)addr, buffer, count)
+#define insq(addr, buffer, count) __insq(PCI_IOBASE + (addr), buffer, count)
 
 __io_writes_outs(writes, u64, q, __io_bw(), __io_aw())
 #define writesq(addr, buffer, count) __writesq(addr, buffer, count)
 
 __io_writes_outs(outs, u64, q, __io_pbr(), __io_paw())
-#define outsq(addr, buffer, count) __outsq((void __iomem *)addr, buffer, count)
+#define outsq(addr, buffer, count) __outsq(PCI_IOBASE + (addr), buffer, count)
 #endif
 
 #include <asm-generic/io.h>
diff --git a/arch/riscv/include/asm/mmu.h b/arch/riscv/include/asm/mmu.h
index cedcf8ea3c76..0099dc116168 100644
--- a/arch/riscv/include/asm/mmu.h
+++ b/arch/riscv/include/asm/mmu.h
@@ -16,7 +16,6 @@ typedef struct {
 	atomic_long_t id;
 #endif
 	void *vdso;
-	void *vdso_info;
 #ifdef CONFIG_SMP
 	/* A local icache flush is needed before user execution can resume. */
 	cpumask_t icache_stale_mask;
diff --git a/arch/riscv/include/uapi/asm/auxvec.h b/arch/riscv/include/uapi/asm/auxvec.h
index 32c73ba1d531..fb187a33ce58 100644
--- a/arch/riscv/include/uapi/asm/auxvec.h
+++ b/arch/riscv/include/uapi/asm/auxvec.h
@@ -30,8 +30,10 @@
 #define AT_L1D_CACHEGEOMETRY	43
 #define AT_L2_CACHESIZE		44
 #define AT_L2_CACHEGEOMETRY	45
+#define AT_L3_CACHESIZE		46
+#define AT_L3_CACHEGEOMETRY	47
 
 /* entries in ARCH_DLINFO */
-#define AT_VECTOR_SIZE_ARCH	7
+#define AT_VECTOR_SIZE_ARCH	9
 
 #endif /* _UAPI_ASM_RISCV_AUXVEC_H */
diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index 4d0dece5996c..fa427bdcf773 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -3,10 +3,13 @@
  * Copyright (C) 2012 Regents of the University of California
  */
 
+#include <linux/cpu.h>
 #include <linux/init.h>
 #include <linux/seq_file.h>
 #include <linux/of.h>
+#include <asm/csr.h>
 #include <asm/hwcap.h>
+#include <asm/sbi.h>
 #include <asm/smp.h>
 #include <asm/pgtable.h>
 
@@ -68,6 +71,50 @@ int riscv_of_parent_hartid(struct device_node *node, unsigned long *hartid)
 }
 
 #ifdef CONFIG_PROC_FS
+
+struct riscv_cpuinfo {
+	unsigned long mvendorid;
+	unsigned long marchid;
+	unsigned long mimpid;
+};
+static DEFINE_PER_CPU(struct riscv_cpuinfo, riscv_cpuinfo);
+
+static int riscv_cpuinfo_starting(unsigned int cpu)
+{
+	struct riscv_cpuinfo *ci = this_cpu_ptr(&riscv_cpuinfo);
+
+#if IS_ENABLED(CONFIG_RISCV_SBI)
+	ci->mvendorid = sbi_spec_is_0_1() ? 0 : sbi_get_mvendorid();
+	ci->marchid = sbi_spec_is_0_1() ? 0 : sbi_get_marchid();
+	ci->mimpid = sbi_spec_is_0_1() ? 0 : sbi_get_mimpid();
+#elif IS_ENABLED(CONFIG_RISCV_M_MODE)
+	ci->mvendorid = csr_read(CSR_MVENDORID);
+	ci->marchid = csr_read(CSR_MARCHID);
+	ci->mimpid = csr_read(CSR_MIMPID);
+#else
+	ci->mvendorid = 0;
+	ci->marchid = 0;
+	ci->mimpid = 0;
+#endif
+
+	return 0;
+}
+
+static int __init riscv_cpuinfo_init(void)
+{
+	int ret;
+
+	ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "riscv/cpuinfo:starting",
+				riscv_cpuinfo_starting, NULL);
+	if (ret < 0) {
+		pr_err("cpuinfo: failed to register hotplug callbacks.\n");
+		return ret;
+	}
+
+	return 0;
+}
+device_initcall(riscv_cpuinfo_init);
+
 #define __RISCV_ISA_EXT_DATA(UPROP, EXTID) \
 	{							\
 		.uprop = #UPROP,				\
@@ -186,6 +233,7 @@ static int c_show(struct seq_file *m, void *v)
 {
 	unsigned long cpu_id = (unsigned long)v - 1;
 	struct device_node *node = of_get_cpu_node(cpu_id, NULL);
+	struct riscv_cpuinfo *ci = per_cpu_ptr(&riscv_cpuinfo, cpu_id);
 	const char *compat, *isa;
 
 	seq_printf(m, "processor\t: %lu\n", cpu_id);
@@ -196,6 +244,9 @@ static int c_show(struct seq_file *m, void *v)
 	if (!of_property_read_string(node, "compatible", &compat)
 	    && strcmp(compat, "riscv"))
 		seq_printf(m, "uarch\t\t: %s\n", compat);
+	seq_printf(m, "mvendorid\t: 0x%lx\n", ci->mvendorid);
+	seq_printf(m, "marchid\t\t: 0x%lx\n", ci->marchid);
+	seq_printf(m, "mimpid\t\t: 0x%lx\n", ci->mimpid);
 	seq_puts(m, "\n");
 	of_node_put(node);
 
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 9774f1271f93..694267d1fe81 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -254,35 +254,28 @@ void __init riscv_fill_hwcap(void)
 #ifdef CONFIG_RISCV_ALTERNATIVE
 static bool __init_or_module cpufeature_probe_svpbmt(unsigned int stage)
 {
-#ifdef CONFIG_RISCV_ISA_SVPBMT
-	switch (stage) {
-	case RISCV_ALTERNATIVES_EARLY_BOOT:
+	if (!IS_ENABLED(CONFIG_RISCV_ISA_SVPBMT))
+		return false;
+
+	if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
 		return false;
-	default:
-		return riscv_isa_extension_available(NULL, SVPBMT);
-	}
-#endif
 
-	return false;
+	return riscv_isa_extension_available(NULL, SVPBMT);
 }
 
 static bool __init_or_module cpufeature_probe_zicbom(unsigned int stage)
 {
-#ifdef CONFIG_RISCV_ISA_ZICBOM
-	switch (stage) {
-	case RISCV_ALTERNATIVES_EARLY_BOOT:
+	if (!IS_ENABLED(CONFIG_RISCV_ISA_ZICBOM))
+		return false;
+
+	if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
+		return false;
+
+	if (!riscv_isa_extension_available(NULL, ZICBOM))
 		return false;
-	default:
-		if (riscv_isa_extension_available(NULL, ZICBOM)) {
-			riscv_noncoherent_supported();
-			return true;
-		} else {
-			return false;
-		}
-	}
-#endif
 
-	return false;
+	riscv_noncoherent_supported();
+	return true;
 }
 
 /*
@@ -297,10 +290,10 @@ static u32 __init_or_module cpufeature_probe(unsigned int stage)
 	u32 cpu_req_feature = 0;
 
 	if (cpufeature_probe_svpbmt(stage))
-		cpu_req_feature |= (1U << CPUFEATURE_SVPBMT);
+		cpu_req_feature |= BIT(CPUFEATURE_SVPBMT);
 
 	if (cpufeature_probe_zicbom(stage))
-		cpu_req_feature |= (1U << CPUFEATURE_ZICBOM);
+		cpu_req_feature |= BIT(CPUFEATURE_ZICBOM);
 
 	return cpu_req_feature;
 }
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 2dfc463b86bb..ad76bb59b059 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -252,10 +252,10 @@ static void __init parse_dtb(void)
 			pr_info("Machine model: %s\n", name);
 			dump_stack_set_arch_desc("%s (DT)", name);
 		}
-		return;
+	} else {
+		pr_err("No DTB passed to the kernel\n");
 	}
 
-	pr_err("No DTB passed to the kernel\n");
 #ifdef CONFIG_CMDLINE_FORCE
 	strscpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
 	pr_info("Forcing kernel command line to: %s\n", boot_command_line);
diff --git a/arch/riscv/kernel/sys_riscv.c b/arch/riscv/kernel/sys_riscv.c
index 571556bb9261..5d3f2fbeb33c 100644
--- a/arch/riscv/kernel/sys_riscv.c
+++ b/arch/riscv/kernel/sys_riscv.c
@@ -18,9 +18,6 @@ static long riscv_sys_mmap(unsigned long addr, unsigned long len,
 	if (unlikely(offset & (~PAGE_MASK >> page_shift_offset)))
 		return -EINVAL;
 
-	if (unlikely((prot & PROT_WRITE) && !(prot & PROT_READ)))
-		return -EINVAL;
-
 	return ksys_mmap_pgoff(addr, len, prot, flags, fd,
 			       offset >> (PAGE_SHIFT - page_shift_offset));
 }
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 635e6ec26938..f3e96d60a2ff 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -33,6 +33,7 @@ void die(struct pt_regs *regs, const char *str)
 {
 	static int die_counter;
 	int ret;
+	long cause;
 
 	oops_enter();
 
@@ -42,11 +43,13 @@ void die(struct pt_regs *regs, const char *str)
 
 	pr_emerg("%s [#%d]\n", str, ++die_counter);
 	print_modules();
-	show_regs(regs);
+	if (regs)
+		show_regs(regs);
 
-	ret = notify_die(DIE_OOPS, str, regs, 0, regs->cause, SIGSEGV);
+	cause = regs ? regs->cause : -1;
+	ret = notify_die(DIE_OOPS, str, regs, 0, cause, SIGSEGV);
 
-	if (regs && kexec_should_crash(current))
+	if (kexec_should_crash(current))
 		crash_kexec(regs);
 
 	bust_spinlocks(0);
diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index 692e7ae3dcb8..123d05255fcf 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -60,6 +60,11 @@ struct __vdso_info {
 	struct vm_special_mapping *cm;
 };
 
+static struct __vdso_info vdso_info;
+#ifdef CONFIG_COMPAT
+static struct __vdso_info compat_vdso_info;
+#endif
+
 static int vdso_mremap(const struct vm_special_mapping *sm,
 		       struct vm_area_struct *new_vma)
 {
@@ -115,15 +120,18 @@ int vdso_join_timens(struct task_struct *task, struct time_namespace *ns)
 	struct mm_struct *mm = task->mm;
 	struct vm_area_struct *vma;
 	VMA_ITERATOR(vmi, mm, 0);
-	struct __vdso_info *vdso_info = mm->context.vdso_info;
 
 	mmap_read_lock(mm);
 
 	for_each_vma(vmi, vma) {
 		unsigned long size = vma->vm_end - vma->vm_start;
 
-		if (vma_is_special_mapping(vma, vdso_info->dm))
+		if (vma_is_special_mapping(vma, vdso_info.dm))
 			zap_page_range(vma, vma->vm_start, size);
+#ifdef CONFIG_COMPAT
+		if (vma_is_special_mapping(vma, compat_vdso_info.dm))
+			zap_page_range(vma, vma->vm_start, size);
+#endif
 	}
 
 	mmap_read_unlock(mm);
@@ -265,7 +273,6 @@ static int __setup_additional_pages(struct mm_struct *mm,
 
 	vdso_base += VVAR_SIZE;
 	mm->context.vdso = (void *)vdso_base;
-	mm->context.vdso_info = (void *)vdso_info;
 
 	ret =
 	   _install_special_mapping(mm, vdso_base, vdso_text_len,
diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c
index f2fbd1400b7c..d86f7cebd4a7 100644
--- a/arch/riscv/mm/fault.c
+++ b/arch/riscv/mm/fault.c
@@ -184,7 +184,8 @@ static inline bool access_error(unsigned long cause, struct vm_area_struct *vma)
 		}
 		break;
 	case EXC_LOAD_PAGE_FAULT:
-		if (!(vma->vm_flags & VM_READ)) {
+		/* Write implies read */
+		if (!(vma->vm_flags & (VM_READ | VM_WRITE))) {
 			return true;
 		}
 		break;
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index d5119e039d85..42af4b3aa02b 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -224,13 +224,13 @@ unsigned long __get_wchan(struct task_struct *p)
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
+		sp -= prandom_u32_max(PAGE_SIZE);
 	return sp & ~0xf;
 }
 
 static inline unsigned long brk_rnd(void)
 {
-	return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
+	return (get_random_u16() & BRK_RND_MASK) << PAGE_SHIFT;
 }
 
 unsigned long arch_randomize_brk(struct mm_struct *mm)
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 535099f2736d..3105ca5bd470 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -227,7 +227,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned long len)
 	end -= len;
 
 	if (end > start) {
-		offset = get_random_int() % (((end - start) >> PAGE_SHIFT) + 1);
+		offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
 		addr = start + (offset << PAGE_SHIFT);
 	} else {
 		addr = start;
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 5980ce348832..3327c47bc181 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -37,7 +37,7 @@ static inline int mmap_is_legacy(struct rlimit *rlim_stack)
 
 unsigned long arch_mmap_rnd(void)
 {
-	return (get_random_int() & MMAP_RND_MASK) << PAGE_SHIFT;
+	return (get_random_u32() & MMAP_RND_MASK) << PAGE_SHIFT;
 }
 
 static unsigned long mmap_base_legacy(unsigned long rnd)
diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c
index cc19e09b0fa1..ae9a86cb6f3d 100644
--- a/arch/sparc/vdso/vma.c
+++ b/arch/sparc/vdso/vma.c
@@ -354,7 +354,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned int len)
 	unsigned int offset;
 
 	/* This loses some more bits than a modulo, but is cheaper */
-	offset = get_random_int() & (PTRS_PER_PTE - 1);
+	offset = prandom_u32_max(PTRS_PER_PTE);
 	return start + (offset << PAGE_SHIFT);
 }
 
diff --git a/arch/um/drivers/chan.h b/arch/um/drivers/chan.h
index c37cc4f26f91..3fec3b8406e9 100644
--- a/arch/um/drivers/chan.h
+++ b/arch/um/drivers/chan.h
@@ -36,7 +36,6 @@ extern int console_write_chan(struct chan *chan, const char *buf,
 			      int len);
 extern int console_open_chan(struct line *line, struct console *co);
 extern void deactivate_chan(struct chan *chan, int irq);
-extern void reactivate_chan(struct chan *chan, int irq);
 extern void chan_enable_winch(struct chan *chan, struct tty_port *port);
 extern int enable_chan(struct line *line);
 extern void close_chan(struct line *line);
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 8ca67a692683..5026e7b9adfe 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -283,7 +283,7 @@ struct unplugged_pages {
 };
 
 static DEFINE_MUTEX(plug_mem_mutex);
-static unsigned long long unplugged_pages_count = 0;
+static unsigned long long unplugged_pages_count;
 static LIST_HEAD(unplugged_pages);
 static int unplug_index = UNPLUGGED_PER_PAGE;
 
@@ -846,13 +846,12 @@ static int notify_panic(struct notifier_block *self, unsigned long unused1,
 
 	mconsole_notify(notify_socket, MCONSOLE_PANIC, message,
 			strlen(message) + 1);
-	return 0;
+	return NOTIFY_DONE;
 }
 
 static struct notifier_block panic_exit_notifier = {
-	.notifier_call 		= notify_panic,
-	.next 			= NULL,
-	.priority 		= 1
+	.notifier_call	= notify_panic,
+	.priority	= INT_MAX, /* run as soon as possible */
 };
 
 static int add_notifier(void)
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index 0bf78ff89011..807cd3358740 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -122,7 +122,7 @@ static int __init mmapper_init(void)
 	return 0;
 }
 
-static void mmapper_exit(void)
+static void __exit mmapper_exit(void)
 {
 	misc_deregister(&mmapper_dev);
 }
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 59331384c2d3..3d7836c46507 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -265,7 +265,7 @@ static void uml_net_poll_controller(struct net_device *dev)
 static void uml_net_get_drvinfo(struct net_device *dev,
 				struct ethtool_drvinfo *info)
 {
-	strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
+	strscpy(info->driver, DRIVER_NAME, sizeof(info->driver));
 }
 
 static const struct ethtool_ops uml_net_ethtool_ops = {
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index 8514966778d5..277cea3d30eb 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -106,7 +106,7 @@ static const struct tty_operations ssl_ops = {
 /* Changed by ssl_init and referenced by ssl_exit, which are both serialized
  * by being an initcall and exitcall, respectively.
  */
-static int ssl_init_done = 0;
+static int ssl_init_done;
 
 static void ssl_console_write(struct console *c, const char *string,
 			      unsigned len)
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 489d5a746ed3..1c239737d88e 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -88,7 +88,7 @@ static int con_remove(int n, char **error_out)
 }
 
 /* Set in an initcall, checked in an exitcall */
-static int con_init_done = 0;
+static int con_init_done;
 
 static int con_install(struct tty_driver *driver, struct tty_struct *tty)
 {
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index eb2d2f0f0bcc..f4c1e6e97ad5 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1555,7 +1555,7 @@ static void do_io(struct io_thread_req *req, struct io_desc *desc)
 int kernel_fd = -1;
 
 /* Only changed by the io thread. XXX: currently unused. */
-static int io_count = 0;
+static int io_count;
 
 int io_thread(void *arg)
 {
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index 548265312743..ded7c47d2fbe 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -1372,7 +1372,7 @@ static void vector_net_poll_controller(struct net_device *dev)
 static void vector_net_get_drvinfo(struct net_device *dev,
 				struct ethtool_drvinfo *info)
 {
-	strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
+	strscpy(info->driver, DRIVER_NAME, sizeof(info->driver));
 }
 
 static int vector_net_load_bpf_flash(struct net_device *dev,
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c
index 027847023184..acb55b302b14 100644
--- a/arch/um/drivers/virt-pci.c
+++ b/arch/um/drivers/virt-pci.c
@@ -857,7 +857,7 @@ void *pci_root_bus_fwnode(struct pci_bus *bus)
 	return um_pci_fwnode;
 }
 
-static int um_pci_init(void)
+static int __init um_pci_init(void)
 {
 	int err, i;
 
@@ -940,7 +940,7 @@ free:
 }
 module_init(um_pci_init);
 
-static void um_pci_exit(void)
+static void __exit um_pci_exit(void)
 {
 	unregister_virtio_driver(&um_pci_virtio_driver);
 	irq_domain_remove(um_pci_msi_domain);
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index e719af8bdf56..588930a0ced1 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -374,45 +374,48 @@ static irqreturn_t vu_req_read_message(struct virtio_uml_device *vu_dev,
 		u8 extra_payload[512];
 	} msg;
 	int rc;
+	irqreturn_t irq_rc = IRQ_NONE;
 
-	rc = vhost_user_recv_req(vu_dev, &msg.msg,
-				 sizeof(msg.msg.payload) +
-				 sizeof(msg.extra_payload));
-
-	vu_dev->recv_rc = rc;
-	if (rc)
-		return IRQ_NONE;
-
-	switch (msg.msg.header.request) {
-	case VHOST_USER_SLAVE_CONFIG_CHANGE_MSG:
-		vu_dev->config_changed_irq = true;
-		response = 0;
-		break;
-	case VHOST_USER_SLAVE_VRING_CALL:
-		virtio_device_for_each_vq((&vu_dev->vdev), vq) {
-			if (vq->index == msg.msg.payload.vring_state.index) {
-				response = 0;
-				vu_dev->vq_irq_vq_map |= BIT_ULL(vq->index);
-				break;
+	while (1) {
+		rc = vhost_user_recv_req(vu_dev, &msg.msg,
+					 sizeof(msg.msg.payload) +
+					 sizeof(msg.extra_payload));
+		if (rc)
+			break;
+
+		switch (msg.msg.header.request) {
+		case VHOST_USER_SLAVE_CONFIG_CHANGE_MSG:
+			vu_dev->config_changed_irq = true;
+			response = 0;
+			break;
+		case VHOST_USER_SLAVE_VRING_CALL:
+			virtio_device_for_each_vq((&vu_dev->vdev), vq) {
+				if (vq->index == msg.msg.payload.vring_state.index) {
+					response = 0;
+					vu_dev->vq_irq_vq_map |= BIT_ULL(vq->index);
+					break;
+				}
 			}
+			break;
+		case VHOST_USER_SLAVE_IOTLB_MSG:
+			/* not supported - VIRTIO_F_ACCESS_PLATFORM */
+		case VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG:
+			/* not supported - VHOST_USER_PROTOCOL_F_HOST_NOTIFIER */
+		default:
+			vu_err(vu_dev, "unexpected slave request %d\n",
+			       msg.msg.header.request);
 		}
-		break;
-	case VHOST_USER_SLAVE_IOTLB_MSG:
-		/* not supported - VIRTIO_F_ACCESS_PLATFORM */
-	case VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG:
-		/* not supported - VHOST_USER_PROTOCOL_F_HOST_NOTIFIER */
-	default:
-		vu_err(vu_dev, "unexpected slave request %d\n",
-		       msg.msg.header.request);
-	}
-
-	if (ev && !vu_dev->suspended)
-		time_travel_add_irq_event(ev);
 
-	if (msg.msg.header.flags & VHOST_USER_FLAG_NEED_REPLY)
-		vhost_user_reply(vu_dev, &msg.msg, response);
+		if (ev && !vu_dev->suspended)
+			time_travel_add_irq_event(ev);
 
-	return IRQ_HANDLED;
+		if (msg.msg.header.flags & VHOST_USER_FLAG_NEED_REPLY)
+			vhost_user_reply(vu_dev, &msg.msg, response);
+		irq_rc = IRQ_HANDLED;
+	};
+	/* mask EAGAIN as we try non-blocking read until socket is empty */
+	vu_dev->recv_rc = (rc == -EAGAIN) ? 0 : rc;
+	return irq_rc;
 }
 
 static irqreturn_t vu_req_interrupt(int irq, void *data)
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index e7c7b53a1435..91485119ae67 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -169,7 +169,7 @@ __uml_setup("iomem=", parse_iomem,
 );
 
 /*
- * This list is constructed in parse_iomem and addresses filled in in
+ * This list is constructed in parse_iomem and addresses filled in
  * setup_iomem, both of which run during early boot.  Afterwards, it's
  * unchanged.
  */
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 80b90b1276a1..010bc422a09d 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -356,7 +356,7 @@ int singlestepping(void * t)
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
+		sp -= prandom_u32_max(8192);
 	return sp & ~0xf;
 }
 #endif
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index d9e023c78f56..8adf8e89b255 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -96,7 +96,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 
 static void *c_start(struct seq_file *m, loff_t *pos)
 {
-	return *pos < NR_CPUS ? cpu_data + *pos : NULL;
+	return *pos < nr_cpu_ids ? cpu_data + *pos : NULL;
 }
 
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
@@ -132,7 +132,7 @@ static int have_root __initdata;
 static int have_console __initdata;
 
 /* Set in uml_mem_setup and modified in linux_main */
-long long physmem_size = 32 * 1024 * 1024;
+long long physmem_size = 64 * 1024 * 1024;
 EXPORT_SYMBOL(physmem_size);
 
 static const char *usage_string =
@@ -247,13 +247,13 @@ static int panic_exit(struct notifier_block *self, unsigned long unused1,
 	bust_spinlocks(0);
 	uml_exitcode = 1;
 	os_dump_core();
-	return 0;
+
+	return NOTIFY_DONE;
 }
 
 static struct notifier_block panic_exit_notifier = {
-	.notifier_call 		= panic_exit,
-	.next 			= NULL,
-	.priority 		= 0
+	.notifier_call	= panic_exit,
+	.priority	= INT_MAX - 1, /* run as 2nd notifier, won't return */
 };
 
 void uml_finishsetup(void)
@@ -416,7 +416,7 @@ void __init setup_arch(char **cmdline_p)
 	read_initrd();
 
 	paging_init();
-	strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
+	strscpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
 	setup_hostinfo(host_info, sizeof host_info);
 
diff --git a/arch/um/kernel/umid.c b/arch/um/kernel/umid.c
index 8031a038eb58..72bc60ade347 100644
--- a/arch/um/kernel/umid.c
+++ b/arch/um/kernel/umid.c
@@ -9,7 +9,7 @@
 #include <os.h>
 
 /* Changed by set_umid_arg */
-static int umid_inited = 0;
+static int umid_inited;
 
 static int __init set_umid_arg(char *name, int *add)
 {
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
index 6292b960037b..311eae30e089 100644
--- a/arch/x86/entry/vdso/vma.c
+++ b/arch/x86/entry/vdso/vma.c
@@ -327,7 +327,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned len)
 	end -= len;
 
 	if (end > start) {
-		offset = get_random_int() % (((end - start) >> PAGE_SHIFT) + 1);
+		offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
 		addr = start + (offset << PAGE_SHIFT);
 	} else {
 		addr = start;
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 48276c0e479d..860b60273df3 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -503,7 +503,7 @@ static void bsp_init_amd(struct cpuinfo_x86 *c)
 		va_align.flags    = ALIGN_VA_32 | ALIGN_VA_64;
 
 		/* A random value per boot for bit slice [12:upper_bit) */
-		va_align.bits = get_random_int() & va_align.mask;
+		va_align.bits = get_random_u32() & va_align.mask;
 	}
 
 	if (cpu_has(c, X86_FEATURE_MWAITX))
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index b1abf663417c..c032edcd3d95 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -53,7 +53,7 @@ static unsigned long int get_module_load_offset(void)
 		 */
 		if (module_load_offset == 0)
 			module_load_offset =
-				(get_random_int() % 1024 + 1) * PAGE_SIZE;
+				(prandom_u32_max(1024) + 1) * PAGE_SIZE;
 		mutex_unlock(&module_kaslr_mutex);
 	}
 	return module_load_offset;
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 58a6ea472db9..c21b7347a26d 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -965,7 +965,7 @@ early_param("idle", idle_setup);
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
+		sp -= prandom_u32_max(8192);
 	return sp & ~0xf;
 }
 
diff --git a/arch/x86/mm/pat/cpa-test.c b/arch/x86/mm/pat/cpa-test.c
index 0612a73638a8..423b21e80929 100644
--- a/arch/x86/mm/pat/cpa-test.c
+++ b/arch/x86/mm/pat/cpa-test.c
@@ -136,10 +136,10 @@ static int pageattr_test(void)
 	failed += print_split(&sa);
 
 	for (i = 0; i < NTEST; i++) {
-		unsigned long pfn = prandom_u32() % max_pfn_mapped;
+		unsigned long pfn = prandom_u32_max(max_pfn_mapped);
 
 		addr[i] = (unsigned long)__va(pfn << PAGE_SHIFT);
-		len[i] = prandom_u32() % NPAGES;
+		len[i] = prandom_u32_max(NPAGES);
 		len[i] = min_t(unsigned long, len[i], max_pfn_mapped - pfn - 1);
 
 		if (len[i] == 0)
author	Jakub Kicinski <kuba@kernel.org>	2022-10-21 02:49:10 +0200
committer	Jakub Kicinski <kuba@kernel.org>	2022-10-21 02:49:10 +0200
commit	94adb5e29e0e583283183dbaa852ee9d7d0c4c26 (patch)
tree	3038a63f3ed9632711100f1187c4c53c304b785b /arch
parent	net: ipa: Proactively round up to kmalloc bucket size (diff)
parent	Merge tag 'net-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netd... (diff)
download	linux-94adb5e29e0e583283183dbaa852ee9d7d0c4c26.tar.xz linux-94adb5e29e0e583283183dbaa852ee9d7d0c4c26.zip