9 files changed, 36 insertions, 47 deletions

diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 3438ab72c346..83823db3488b 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/arch/powerpc/mm/book3s64/pgtable.c
@@ -113,7 +113,7 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr,
 
 	WARN_ON(pte_hw_valid(pmd_pte(*pmdp)) && !pte_protnone(pmd_pte(*pmdp)));
 	assert_spin_locked(pmd_lockptr(mm, pmdp));
-	WARN_ON(!(pmd_large(pmd)));
+	WARN_ON(!(pmd_leaf(pmd)));
 #endif
 	trace_hugepage_set_pmd(addr, pmd_val(pmd));
 	return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd));
@@ -130,7 +130,7 @@ void set_pud_at(struct mm_struct *mm, unsigned long addr,
 
 	WARN_ON(pte_hw_valid(pud_pte(*pudp)));
 	assert_spin_locked(pud_lockptr(mm, pudp));
-	WARN_ON(!(pud_large(pud)));
+	WARN_ON(!(pud_leaf(pud)));
 #endif
 	trace_hugepage_set_pud(addr, pud_val(pud));
 	return set_pte_at(mm, addr, pudp_ptep(pudp), pud_pte(pud));
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index c6a4ac766b2b..5cc4008329be 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -204,14 +204,14 @@ static void radix__change_memory_range(unsigned long start, unsigned long end,
 		pudp = pud_alloc(&init_mm, p4dp, idx);
 		if (!pudp)
 			continue;
-		if (pud_is_leaf(*pudp)) {
+		if (pud_leaf(*pudp)) {
 			ptep = (pte_t *)pudp;
 			goto update_the_pte;
 		}
 		pmdp = pmd_alloc(&init_mm, pudp, idx);
 		if (!pmdp)
 			continue;
-		if (pmd_is_leaf(*pmdp)) {
+		if (pmd_leaf(*pmdp)) {
 			ptep = pmdp_ptep(pmdp);
 			goto update_the_pte;
 		}
@@ -767,7 +767,7 @@ static void __meminit remove_pmd_table(pmd_t *pmd_start, unsigned long addr,
 		if (!pmd_present(*pmd))
 			continue;
 
-		if (pmd_is_leaf(*pmd)) {
+		if (pmd_leaf(*pmd)) {
 			if (IS_ALIGNED(addr, PMD_SIZE) &&
 			    IS_ALIGNED(next, PMD_SIZE)) {
 				if (!direct)
@@ -807,7 +807,7 @@ static void __meminit remove_pud_table(pud_t *pud_start, unsigned long addr,
 		if (!pud_present(*pud))
 			continue;
 
-		if (pud_is_leaf(*pud)) {
+		if (pud_leaf(*pud)) {
 			if (!IS_ALIGNED(addr, PUD_SIZE) ||
 			    !IS_ALIGNED(next, PUD_SIZE)) {
 				WARN_ONCE(1, "%s: unaligned range\n", __func__);
@@ -845,7 +845,7 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct,
 		if (!p4d_present(*p4d))
 			continue;
 
-		if (p4d_is_leaf(*p4d)) {
+		if (p4d_leaf(*p4d)) {
 			if (!IS_ALIGNED(addr, P4D_SIZE) ||
 			    !IS_ALIGNED(next, P4D_SIZE)) {
 				WARN_ONCE(1, "%s: unaligned range\n", __func__);
@@ -924,7 +924,7 @@ bool vmemmap_can_optimize(struct vmem_altmap *altmap, struct dev_pagemap *pgmap)
 int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node,
 				unsigned long addr, unsigned long next)
 {
-	int large = pmd_large(*pmdp);
+	int large = pmd_leaf(*pmdp);
 
 	if (large)
 		vmemmap_verify(pmdp_ptep(pmdp), node, addr, next);
@@ -1554,7 +1554,7 @@ int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
 
 int pud_clear_huge(pud_t *pud)
 {
-	if (pud_is_leaf(*pud)) {
+	if (pud_leaf(*pud)) {
 		pud_clear(pud);
 		return 1;
 	}
@@ -1601,7 +1601,7 @@ int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
 
 int pmd_clear_huge(pmd_t *pmd)
 {
-	if (pmd_is_leaf(*pmd)) {
+	if (pmd_leaf(*pmd)) {
 		pmd_clear(pmd);
 		return 1;
 	}
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 0a540b37aab6..594a4b7b2ca2 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -226,7 +226,7 @@ static int __init pseries_alloc_bootmem_huge_page(struct hstate *hstate)
 		return 0;
 	m = phys_to_virt(gpage_freearray[--nr_gpages]);
 	gpage_freearray[nr_gpages] = 0;
-	list_add(&m->list, &huge_boot_pages);
+	list_add(&m->list, &huge_boot_pages[0]);
 	m->hstate = hstate;
 	return 1;
 }
@@ -614,8 +614,6 @@ void __init gigantic_hugetlb_cma_reserve(void)
 		 */
 		order = mmu_psize_to_shift(MMU_PAGE_16G) - PAGE_SHIFT;
 
-	if (order) {
-		VM_WARN_ON(order <= MAX_PAGE_ORDER);
+	if (order)
 		hugetlb_cma_reserve(order);
-	}
 }
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 72341b9fb552..90dcc2844056 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -171,12 +171,6 @@ static inline void mmu_mark_rodata_ro(void) { }
 void __init mmu_mapin_immr(void);
 #endif
 
-#ifdef CONFIG_DEBUG_WX
-void ptdump_check_wx(void);
-#else
-static inline void ptdump_check_wx(void) { }
-#endif
-
 static inline bool debug_pagealloc_enabled_or_kfence(void)
 {
 	return IS_ENABLED(CONFIG_KFENCE) || debug_pagealloc_enabled();
diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c
index b4f2786a7d2b..cdff129abb14 100644
--- a/arch/powerpc/mm/nohash/kaslr_booke.c
+++ b/arch/powerpc/mm/nohash/kaslr_booke.c
@@ -13,7 +13,7 @@
 #include <linux/delay.h>
 #include <linux/memblock.h>
 #include <linux/libfdt.h>
-#include <linux/crash_core.h>
+#include <linux/crash_reserve.h>
 #include <linux/of.h>
 #include <linux/of_fdt.h>
 #include <asm/cacheflush.h>
@@ -173,7 +173,7 @@ static __init bool overlaps_region(const void *fdt, u32 start,
 
 static void __init get_crash_kernel(void *fdt, unsigned long size)
 {
-#ifdef CONFIG_CRASH_CORE
+#ifdef CONFIG_CRASH_RESERVE
 	unsigned long long crash_size, crash_base;
 	int ret;
 
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index a04ae4449a02..9e7ba9c3851f 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -220,10 +220,7 @@ void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
 			break;
 		ptep++;
 		addr += PAGE_SIZE;
-		/*
-		 * increment the pfn.
-		 */
-		pte = pfn_pte(pte_pfn(pte) + 1, pte_pgprot((pte)));
+		pte = pte_next_pfn(pte);
 	}
 }
 
@@ -413,7 +410,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
 	if (p4d_none(p4d))
 		return NULL;
 
-	if (p4d_is_leaf(p4d)) {
+	if (p4d_leaf(p4d)) {
 		ret_pte = (pte_t *)p4dp;
 		goto out;
 	}
@@ -435,7 +432,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
 	if (pud_none(pud))
 		return NULL;
 
-	if (pud_is_leaf(pud)) {
+	if (pud_leaf(pud)) {
 		ret_pte = (pte_t *)pudp;
 		goto out;
 	}
@@ -474,7 +471,7 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
 		goto out;
 	}
 
-	if (pmd_is_leaf(pmd)) {
+	if (pmd_leaf(pmd)) {
 		ret_pte = (pte_t *)pmdp;
 		goto out;
 	}
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 5c02fd08d61e..12498017da8e 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -153,7 +153,6 @@ void mark_rodata_ro(void)
 
 	if (v_block_mapped((unsigned long)_stext + 1)) {
 		mmu_mark_rodata_ro();
-		ptdump_check_wx();
 		return;
 	}
 
@@ -166,9 +165,6 @@ void mark_rodata_ro(void)
 		   PFN_DOWN((unsigned long)_stext);
 
 	set_memory_ro((unsigned long)_stext, numpages);
-
-	// mark_initmem_nx() should have already run by now
-	ptdump_check_wx();
 }
 #endif
 
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 5ac1fd30341b..9b99113cb51a 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -100,7 +100,7 @@ EXPORT_SYMBOL(__pte_frag_size_shift);
 /* 4 level page table */
 struct page *p4d_page(p4d_t p4d)
 {
-	if (p4d_is_leaf(p4d)) {
+	if (p4d_leaf(p4d)) {
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
 			VM_WARN_ON(!p4d_huge(p4d));
 		return pte_page(p4d_pte(p4d));
@@ -111,7 +111,7 @@ struct page *p4d_page(p4d_t p4d)
 
 struct page *pud_page(pud_t pud)
 {
-	if (pud_is_leaf(pud)) {
+	if (pud_leaf(pud)) {
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
 			VM_WARN_ON(!pud_huge(pud));
 		return pte_page(pud_pte(pud));
@@ -125,14 +125,14 @@ struct page *pud_page(pud_t pud)
  */
 struct page *pmd_page(pmd_t pmd)
 {
-	if (pmd_is_leaf(pmd)) {
+	if (pmd_leaf(pmd)) {
 		/*
 		 * vmalloc_to_page may be called on any vmap address (not only
 		 * vmalloc), and it uses pmd_page() etc., when huge vmap is
 		 * enabled so these checks can't be used.
 		 */
 		if (!IS_ENABLED(CONFIG_HAVE_ARCH_HUGE_VMAP))
-			VM_WARN_ON(!(pmd_large(pmd) || pmd_huge(pmd)));
+			VM_WARN_ON(!(pmd_leaf(pmd) || pmd_huge(pmd)));
 		return pte_page(pmd_pte(pmd));
 	}
 	return virt_to_page(pmd_page_vaddr(pmd));
@@ -150,9 +150,6 @@ void mark_rodata_ro(void)
 		radix__mark_rodata_ro();
 	else
 		hash__mark_rodata_ro();
-
-	// mark_initmem_nx() should have already run by now
-	ptdump_check_wx();
 }
 
 void mark_initmem_nx(void)
diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c
index 2313053fe679..9dc239967b77 100644
--- a/arch/powerpc/mm/ptdump/ptdump.c
+++ b/arch/powerpc/mm/ptdump/ptdump.c
@@ -184,13 +184,14 @@ static void note_prot_wx(struct pg_state *st, unsigned long addr)
 {
 	pte_t pte = __pte(st->current_flags);
 
-	if (!IS_ENABLED(CONFIG_DEBUG_WX) || !st->check_wx)
+	if (!st->check_wx)
 		return;
 
 	if (!pte_write(pte) || !pte_exec(pte))
 		return;
 
-	WARN_ONCE(1, "powerpc/mm: Found insecure W+X mapping at address %p/%pS\n",
+	WARN_ONCE(IS_ENABLED(CONFIG_DEBUG_WX),
+		  "powerpc/mm: Found insecure W+X mapping at address %p/%pS\n",
 		  (void *)st->start_address, (void *)st->start_address);
 
 	st->wx_pages += (addr - st->start_address) / PAGE_SIZE;
@@ -326,8 +327,7 @@ static void __init build_pgtable_complete_mask(void)
 				pg_level[i].mask |= pg_level[i].flag[j].mask;
 }
 
-#ifdef CONFIG_DEBUG_WX
-void ptdump_check_wx(void)
+bool ptdump_check_wx(void)
 {
 	struct pg_state st = {
 		.seq = NULL,
@@ -343,15 +343,22 @@ void ptdump_check_wx(void)
 		}
 	};
 
+	if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) && !mmu_has_feature(MMU_FTR_KERNEL_RO))
+		return true;
+
 	ptdump_walk_pgd(&st.ptdump, &init_mm, NULL);
 
-	if (st.wx_pages)
+	if (st.wx_pages) {
 		pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found\n",
 			st.wx_pages);
-	else
+
+		return false;
+	} else {
 		pr_info("Checked W+X mappings: passed, no W+X pages found\n");
+
+		return true;
+	}
 }
-#endif
 
 static int __init ptdump_init(void)
 {