4 files changed, 27 insertions, 8 deletions

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 089c9c644cce..d7909091cf97 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -307,7 +307,7 @@ void __init dma_contiguous_remap(void)
 
 static int __dma_update_pte(pte_t *pte, unsigned long addr, void *data)
 {
-	struct page *page = virt_to_page(addr);
+	struct page *page = virt_to_page((void *)addr);
 	pgprot_t prot = *(pgprot_t *)data;
 
 	set_pte_ext(pte, mk_pte(page, prot), 0);
@@ -1769,8 +1769,14 @@ static void arm_teardown_iommu_dma_ops(struct device *dev) { }
 void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
 			const struct iommu_ops *iommu, bool coherent)
 {
-	dev->archdata.dma_coherent = coherent;
-	dev->dma_coherent = coherent;
+	/*
+	 * Due to legacy code that sets the ->dma_coherent flag from a bus
+	 * notifier we can't just assign coherent to the ->dma_coherent flag
+	 * here, but instead have to make sure we only set but never clear it
+	 * for now.
+	 */
+	if (coherent)
+		dev->dma_coherent = true;
 
 	/*
 	 * Don't override the dma_ops if they have already been set. Ideally
diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c
index fb688003d156..059eb4cdc9c2 100644
--- a/arch/arm/mm/dump.c
+++ b/arch/arm/mm/dump.c
@@ -26,7 +26,7 @@ static struct addr_marker address_markers[] = {
 	{ MODULES_VADDR,	"Modules" },
 	{ PAGE_OFFSET,		"Kernel Mapping" },
 	{ 0,			"vmalloc() Area" },
-	{ VMALLOC_END,		"vmalloc() End" },
+	{ FDT_FIXED_BASE,	"FDT Area" },
 	{ FIXADDR_START,	"Fixmap Area" },
 	{ VECTORS_BASE,	"Vectors" },
 	{ VECTORS_BASE + PAGE_SIZE * 2, "Vectors End" },
@@ -200,6 +200,7 @@ static const struct prot_bits section_bits[] = {
 };
 
 struct pg_level {
+	const char *name;
 	const struct prot_bits *bits;
 	size_t num;
 	u64 mask;
@@ -213,9 +214,11 @@ static struct pg_level pg_level[] = {
 	}, { /* p4d */
 	}, { /* pud */
 	}, { /* pmd */
+		.name	= (CONFIG_PGTABLE_LEVELS > 2) ? "PMD" : "PGD",
 		.bits	= section_bits,
 		.num	= ARRAY_SIZE(section_bits),
 	}, { /* pte */
+		.name	= "PTE",
 		.bits	= pte_bits,
 		.num	= ARRAY_SIZE(pte_bits),
 	},
@@ -282,7 +285,8 @@ static void note_page(struct pg_state *st, unsigned long addr,
 				delta >>= 10;
 				unit++;
 			}
-			pt_dump_seq_printf(st->seq, "%9lu%c", delta, *unit);
+			pt_dump_seq_printf(st->seq, "%9lu%c %s", delta, *unit,
+					   pg_level[st->level].name);
 			if (st->current_domain)
 				pt_dump_seq_printf(st->seq, " %s",
 							st->current_domain);
@@ -346,7 +350,7 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
 		addr = start + i * PMD_SIZE;
 		domain = get_domain_name(pmd);
 		if (pmd_none(*pmd) || pmd_large(*pmd) || !pmd_present(*pmd))
-			note_page(st, addr, 3, pmd_val(*pmd), domain);
+			note_page(st, addr, 4, pmd_val(*pmd), domain);
 		else
 			walk_pte(st, pmd, addr, domain);
 
diff --git a/arch/arm/mm/kasan_init.c b/arch/arm/mm/kasan_init.c
index 29caee9c79ce..46d9f4a622cb 100644
--- a/arch/arm/mm/kasan_init.c
+++ b/arch/arm/mm/kasan_init.c
@@ -268,12 +268,17 @@ void __init kasan_init(void)
 
 	/*
 	 * 1. The module global variables are in MODULES_VADDR ~ MODULES_END,
-	 *    so we need to map this area.
+	 *    so we need to map this area if CONFIG_KASAN_VMALLOC=n. With
+	 *    VMALLOC support KASAN will manage this region dynamically,
+	 *    refer to kasan_populate_vmalloc() and ARM's implementation of
+	 *    module_alloc().
 	 * 2. PKMAP_BASE ~ PKMAP_BASE+PMD_SIZE's shadow and MODULES_VADDR
 	 *    ~ MODULES_END's shadow is in the same PMD_SIZE, so we can't
 	 *    use kasan_populate_zero_shadow.
 	 */
-	create_mapping((void *)MODULES_VADDR, (void *)(PKMAP_BASE + PMD_SIZE));
+	if (!IS_ENABLED(CONFIG_KASAN_VMALLOC) && IS_ENABLED(CONFIG_MODULES))
+		create_mapping((void *)MODULES_VADDR, (void *)(MODULES_END));
+	create_mapping((void *)PKMAP_BASE, (void *)(PKMAP_BASE + PMD_SIZE));
 
 	/*
 	 * KAsan may reuse the contents of kasan_early_shadow_pte directly, so
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index a49f0b9c0f75..463fc2a8448f 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -300,7 +300,11 @@ static struct mem_type mem_types[] __ro_after_init = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
 			     L_PTE_XN | L_PTE_RDONLY,
 		.prot_l1   = PMD_TYPE_TABLE,
+#ifdef CONFIG_ARM_LPAE
+		.prot_sect = PMD_TYPE_SECT | L_PMD_SECT_RDONLY | PMD_SECT_AP2,
+#else
 		.prot_sect = PMD_TYPE_SECT,
+#endif
 		.domain    = DOMAIN_KERNEL,
 	},
 	[MT_ROM] = {