The patch titled
Subject: x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct
has been added to the -mm tree. Its filename is
x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct.patch
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------------------------------------------------------
From: Steven Price <steven.price@xxxxxxx>
Subject: x86: mm+efi: convert ptdump_walk_pgd_level() to take a mm_struct
To enable x86 to use the generic walk_page_range() function, the callers
of ptdump_walk_pgd_level() need to pass an mm_struct rather than the raw
pgd_t pointer. Luckily since commit 7e904a91bf60 ("efi: Use efi_mm in x86
as well as ARM") we now have an mm_struct for EFI on x86.
Link: http://lkml.kernel.org/r/20190731154603.41797-17-steven.price@xxxxxxx
Signed-off-by: Steven Price <steven.price@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/pgtable.h | 2 +-
arch/x86/mm/dump_pagetables.c | 4 ++--
arch/x86/platform/efi/efi_32.c | 2 +-
arch/x86/platform/efi/efi_64.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
--- a/arch/x86/include/asm/pgtable.h~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct
+++ a/arch/x86/include/asm/pgtable.h
@@ -29,7 +29,7 @@
extern pgd_t early_top_pgt[PTRS_PER_PGD];
int __init __early_make_pgtable(unsigned long address, pmdval_t pmd);
-void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd);
+void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm);
void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool user);
void ptdump_walk_pgd_level_checkwx(void);
void ptdump_walk_user_pgd_level_checkwx(void);
--- a/arch/x86/mm/dump_pagetables.c~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct
+++ a/arch/x86/mm/dump_pagetables.c
@@ -567,9 +567,9 @@ static void ptdump_walk_pgd_level_core(s
pr_info("x86/mm: Checked W+X mappings: passed, no W+X pages found.\n");
}
-void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd)
+void ptdump_walk_pgd_level(struct seq_file *m, struct mm_struct *mm)
{
- ptdump_walk_pgd_level_core(m, pgd, false, true);
+ ptdump_walk_pgd_level_core(m, mm->pgd, false, true);
}
void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool user)
--- a/arch/x86/platform/efi/efi_32.c~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct
+++ a/arch/x86/platform/efi/efi_32.c
@@ -49,7 +49,7 @@ void efi_sync_low_kernel_mappings(void)
void __init efi_dump_pagetable(void)
{
#ifdef CONFIG_EFI_PGT_DUMP
- ptdump_walk_pgd_level(NULL, swapper_pg_dir);
+ ptdump_walk_pgd_level(NULL, &init_mm);
#endif
}
--- a/arch/x86/platform/efi/efi_64.c~x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct
+++ a/arch/x86/platform/efi/efi_64.c
@@ -614,9 +614,9 @@ void __init efi_dump_pagetable(void)
{
#ifdef CONFIG_EFI_PGT_DUMP
if (efi_enabled(EFI_OLD_MEMMAP))
- ptdump_walk_pgd_level(NULL, swapper_pg_dir);
+ ptdump_walk_pgd_level(NULL, &init_mm);
else
- ptdump_walk_pgd_level(NULL, efi_mm.pgd);
+ ptdump_walk_pgd_level(NULL, &efi_mm);
#endif
}
_
Patches currently in -mm which might be from steven.price@xxxxxxx are
mm-add-generic-pd_leaf-macros.patch
arc-mm-add-pd_leaf-definitions.patch
arm-mm-add-pd_leaf-definitions.patch
arm64-mm-add-pd_leaf-definitions.patch
mips-mm-add-pd_leaf-definitions.patch
powerpc-mm-add-pd_leaf-definitions.patch
riscv-mm-add-pd_leaf-definitions.patch
s390-mm-add-pd_leaf-definitions.patch
sparc-mm-add-pd_leaf-definitions.patch
x86-mm-add-pd_leaf-definitions.patch
mm-pagewalk-add-p4d_entry-and-pgd_entry.patch
mm-pagewalk-allow-walking-without-vma.patch
mm-pagewalk-add-test_pd-callbacks.patch
mm-pagewalk-add-depth-parameter-to-pte_hole.patch
x86-mm-point-to-struct-seq_file-from-struct-pg_state.patch
x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct.patch
x86-mm-convert-ptdump_walk_pgd_level_debugfs-to-take-an-mm_struct.patch
x86-mm-convert-ptdump_walk_pgd_level_core-to-take-an-mm_struct.patch
mm-add-generic-ptdump.patch
x86-mm-convert-dump_pagetables-to-use-walk_page_range.patch
arm64-mm-convert-mm-dumpc-to-use-walk_page_range.patch
arm64-mm-display-non-present-entries-in-ptdump.patch
