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-rw-r--r--arch/x86/boot/compressed/eboot.c8
-rw-r--r--arch/x86/include/asm/string_64.h5
-rw-r--r--arch/x86/kernel/apic/io_apic.c4
-rw-r--r--arch/x86/kernel/process.c6
-rw-r--r--arch/x86/kernel/setup.c8
-rw-r--r--arch/x86/kernel/smpboot.c15
6 files changed, 34 insertions, 12 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index ee1b6d346b98..db51c1f27446 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -667,6 +667,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
bool conout_found = false;
void *dummy = NULL;
u32 h = handles[i];
+ u32 current_fb_base;
status = efi_call_early(handle_protocol, h,
proto, (void **)&gop32);
@@ -678,7 +679,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
if (status == EFI_SUCCESS)
conout_found = true;
- status = __gop_query32(gop32, &info, &size, &fb_base);
+ status = __gop_query32(gop32, &info, &size, &current_fb_base);
if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
/*
* Systems that use the UEFI Console Splitter may
@@ -692,6 +693,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
pixel_format = info->pixel_format;
pixel_info = info->pixel_information;
pixels_per_scan_line = info->pixels_per_scan_line;
+ fb_base = current_fb_base;
/*
* Once we've found a GOP supporting ConOut,
@@ -770,6 +772,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
bool conout_found = false;
void *dummy = NULL;
u64 h = handles[i];
+ u32 current_fb_base;
status = efi_call_early(handle_protocol, h,
proto, (void **)&gop64);
@@ -781,7 +784,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
if (status == EFI_SUCCESS)
conout_found = true;
- status = __gop_query64(gop64, &info, &size, &fb_base);
+ status = __gop_query64(gop64, &info, &size, &current_fb_base);
if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
/*
* Systems that use the UEFI Console Splitter may
@@ -795,6 +798,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
pixel_format = info->pixel_format;
pixel_info = info->pixel_information;
pixels_per_scan_line = info->pixels_per_scan_line;
+ fb_base = current_fb_base;
/*
* Once we've found a GOP supporting ConOut,
diff --git a/arch/x86/include/asm/string_64.h b/arch/x86/include/asm/string_64.h
index e4661196994e..ff8b9a17dc4b 100644
--- a/arch/x86/include/asm/string_64.h
+++ b/arch/x86/include/asm/string_64.h
@@ -27,12 +27,11 @@ static __always_inline void *__inline_memcpy(void *to, const void *from, size_t
function. */
#define __HAVE_ARCH_MEMCPY 1
+extern void *memcpy(void *to, const void *from, size_t len);
extern void *__memcpy(void *to, const void *from, size_t len);
#ifndef CONFIG_KMEMCHECK
-#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
-extern void *memcpy(void *to, const void *from, size_t len);
-#else
+#if (__GNUC__ == 4 && __GNUC_MINOR__ < 3) || __GNUC__ < 4
#define memcpy(dst, src, len) \
({ \
size_t __len = (len); \
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 5c60bb162622..bb6bfc01cb82 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2907,6 +2907,7 @@ int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
struct irq_data *irq_data;
struct mp_chip_data *data;
struct irq_alloc_info *info = arg;
+ unsigned long flags;
if (!info || nr_irqs > 1)
return -EINVAL;
@@ -2939,11 +2940,14 @@ int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
cfg = irqd_cfg(irq_data);
add_pin_to_irq_node(data, ioapic_alloc_attr_node(info), ioapic, pin);
+
+ local_irq_save(flags);
if (info->ioapic_entry)
mp_setup_entry(cfg, data, info->ioapic_entry);
mp_register_handler(virq, data->trigger);
if (virq < nr_legacy_irqs())
legacy_pic->mask(virq);
+ local_irq_restore(flags);
apic_printk(APIC_VERBOSE, KERN_DEBUG
"IOAPIC[%d]: Set routing entry (%d-%d -> 0x%x -> IRQ %d Mode:%i Active:%i Dest:%d)\n",
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 39e585a554b7..e28db181e4fc 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -550,14 +550,14 @@ unsigned long get_wchan(struct task_struct *p)
if (sp < bottom || sp > top)
return 0;
- fp = READ_ONCE(*(unsigned long *)sp);
+ fp = READ_ONCE_NOCHECK(*(unsigned long *)sp);
do {
if (fp < bottom || fp > top)
return 0;
- ip = READ_ONCE(*(unsigned long *)(fp + sizeof(unsigned long)));
+ ip = READ_ONCE_NOCHECK(*(unsigned long *)(fp + sizeof(unsigned long)));
if (!in_sched_functions(ip))
return ip;
- fp = READ_ONCE(*(unsigned long *)fp);
+ fp = READ_ONCE_NOCHECK(*(unsigned long *)fp);
} while (count++ < 16 && p->state != TASK_RUNNING);
return 0;
}
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index fdb7f2a2d328..a3cccbfc5f77 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1173,6 +1173,14 @@ void __init setup_arch(char **cmdline_p)
clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY,
swapper_pg_dir + KERNEL_PGD_BOUNDARY,
KERNEL_PGD_PTRS);
+
+ /*
+ * sync back low identity map too. It is used for example
+ * in the 32-bit EFI stub.
+ */
+ clone_pgd_range(initial_page_table,
+ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+ KERNEL_PGD_PTRS);
#endif
tboot_probe();
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index e0c198e5f920..892ee2e5ecbc 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -509,7 +509,7 @@ void __inquire_remote_apic(int apicid)
*/
#define UDELAY_10MS_DEFAULT 10000
-static unsigned int init_udelay = UDELAY_10MS_DEFAULT;
+static unsigned int init_udelay = INT_MAX;
static int __init cpu_init_udelay(char *str)
{
@@ -522,13 +522,16 @@ early_param("cpu_init_udelay", cpu_init_udelay);
static void __init smp_quirk_init_udelay(void)
{
/* if cmdline changed it from default, leave it alone */
- if (init_udelay != UDELAY_10MS_DEFAULT)
+ if (init_udelay != INT_MAX)
return;
/* if modern processor, use no delay */
if (((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 == 6)) ||
((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) && (boot_cpu_data.x86 >= 0xF)))
init_udelay = 0;
+
+ /* else, use legacy delay */
+ init_udelay = UDELAY_10MS_DEFAULT;
}
/*
@@ -657,7 +660,9 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
/*
* Give the other CPU some time to accept the IPI.
*/
- if (init_udelay)
+ if (init_udelay == 0)
+ udelay(10);
+ else
udelay(300);
pr_debug("Startup point 1\n");
@@ -668,7 +673,9 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
/*
* Give the other CPU some time to accept the IPI.
*/
- if (init_udelay)
+ if (init_udelay == 0)
+ udelay(10);
+ else
udelay(200);
if (maxlvt > 3) /* Due to the Pentium erratum 3AP. */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 19:07:25 +0100