Merging upstream version 6.10.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 7 insertions, 26 deletions

diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index 65c19025da..e4969fb54d 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -30,6 +30,7 @@
 #include <linux/start_kernel.h>
 #include <linux/sched/mm.h>
 #include <linux/io.h>
+#include <linux/vmalloc.h>
 
 #include <asm/cacheflush.h>
 #include <asm/pgalloc.h>
@@ -39,22 +40,7 @@
  * Please refer Documentation/mm/arch_pgtable_helpers.rst for the semantics
  * expectations that are being validated here. All future changes in here
  * or the documentation need to be in sync.
- *
- * On s390 platform, the lower 4 bits are used to identify given page table
- * entry type. But these bits might affect the ability to clear entries with
- * pxx_clear() because of how dynamic page table folding works on s390. So
- * while loading up the entries do not change the lower 4 bits. It does not
- * have affect any other platform. Also avoid the 62nd bit on ppc64 that is
- * used to mark a pte entry.
  */
-#define S390_SKIP_MASK		GENMASK(3, 0)
-#if __BITS_PER_LONG == 64
-#define PPC64_SKIP_MASK		GENMASK(62, 62)
-#else
-#define PPC64_SKIP_MASK		0x0
-#endif
-#define ARCH_SKIP_MASK (S390_SKIP_MASK | PPC64_SKIP_MASK)
-#define RANDOM_ORVALUE (GENMASK(BITS_PER_LONG - 1, 0) & ~ARCH_SKIP_MASK)
 #define RANDOM_NZVALUE	GENMASK(7, 0)
 
 struct pgtable_debug_args {
@@ -510,8 +496,7 @@ static void __init pud_clear_tests(struct pgtable_debug_args *args)
 		return;
 
 	pr_debug("Validating PUD clear\n");
-	pud = __pud(pud_val(pud) | RANDOM_ORVALUE);
-	WRITE_ONCE(*args->pudp, pud);
+	WARN_ON(pud_none(pud));
 	pud_clear(args->pudp);
 	pud = READ_ONCE(*args->pudp);
 	WARN_ON(!pud_none(pud));
@@ -547,8 +532,7 @@ static void __init p4d_clear_tests(struct pgtable_debug_args *args)
 		return;
 
 	pr_debug("Validating P4D clear\n");
-	p4d = __p4d(p4d_val(p4d) | RANDOM_ORVALUE);
-	WRITE_ONCE(*args->p4dp, p4d);
+	WARN_ON(p4d_none(p4d));
 	p4d_clear(args->p4dp);
 	p4d = READ_ONCE(*args->p4dp);
 	WARN_ON(!p4d_none(p4d));
@@ -581,8 +565,7 @@ static void __init pgd_clear_tests(struct pgtable_debug_args *args)
 		return;
 
 	pr_debug("Validating PGD clear\n");
-	pgd = __pgd(pgd_val(pgd) | RANDOM_ORVALUE);
-	WRITE_ONCE(*args->pgdp, pgd);
+	WARN_ON(pgd_none(pgd));
 	pgd_clear(args->pgdp);
 	pgd = READ_ONCE(*args->pgdp);
 	WARN_ON(!pgd_none(pgd));
@@ -633,10 +616,8 @@ static void __init pte_clear_tests(struct pgtable_debug_args *args)
 	if (WARN_ON(!args->ptep))
 		return;
 
-#ifndef CONFIG_RISCV
-	pte = __pte(pte_val(pte) | RANDOM_ORVALUE);
-#endif
 	set_pte_at(args->mm, args->vaddr, args->ptep, pte);
+	WARN_ON(pte_none(pte));
 	flush_dcache_page(page);
 	barrier();
 	ptep_clear(args->mm, args->vaddr, args->ptep);
@@ -649,8 +630,7 @@ static void __init pmd_clear_tests(struct pgtable_debug_args *args)
 	pmd_t pmd = READ_ONCE(*args->pmdp);
 
 	pr_debug("Validating PMD clear\n");
-	pmd = __pmd(pmd_val(pmd) | RANDOM_ORVALUE);
-	WRITE_ONCE(*args->pmdp, pmd);
+	WARN_ON(pmd_none(pmd));
 	pmd_clear(args->pmdp);
 	pmd = READ_ONCE(*args->pmdp);
 	WARN_ON(!pmd_none(pmd));
@@ -981,6 +961,7 @@ static void __init pmd_thp_tests(struct pgtable_debug_args *args)
 #ifndef __HAVE_ARCH_PMDP_INVALIDATE
 	WARN_ON(!pmd_trans_huge(pmd_mkinvalid(pmd_mkhuge(pmd))));
 	WARN_ON(!pmd_present(pmd_mkinvalid(pmd_mkhuge(pmd))));
+	WARN_ON(!pmd_leaf(pmd_mkinvalid(pmd_mkhuge(pmd))));
 #endif /* __HAVE_ARCH_PMDP_INVALIDATE */
 }