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Revert "FROMLIST: mm: x86: add CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG"

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This reverts commit 95acc9c28b.

To be replaced with upstream version.

Bug: 249601646
Change-Id: Ibcf628e3313140e79c18f33e0437356a23f0ea00
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
This commit is contained in:
Kalesh Singh
2022-11-08 09:13:13 -08:00
parent a38ef3be2b
commit 4741bcbac4
5 changed files with 4 additions and 18 deletions
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9
arch/Kconfig
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@@ -1180,15 +1180,6 @@ config ARCH_SPLIT_ARG64
If a 32-bit architecture requires 64-bit arguments to be split into
pairs of 32-bit arguments, select this option.
config ARCH_HAS_NONLEAF_PMD_YOUNG
bool
depends on PGTABLE_LEVELS > 2
help
Architectures that select this option are capable of setting the
accessed bit in non-leaf PMD entries when using them as part of linear
address translations. Page table walkers that clear the accessed bit
may use this capability to reduce their search space.
source "kernel/gcov/Kconfig"
source "scripts/gcc-plugins/Kconfig"

1
arch/x86/Kconfig
View File

@@ -76,7 +76,6 @@ config X86
select ARCH_HAS_PMEM_API if X86_64
select ARCH_HAS_PTE_DEVMAP if X86_64
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_NONLEAF_PMD_YOUNG
select ARCH_HAS_UACCESS_FLUSHCACHE if X86_64
select ARCH_HAS_COPY_MC if X86_64
select ARCH_HAS_SET_MEMORY

3
arch/x86/include/asm/pgtable.h
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@@ -846,8 +846,7 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
static inline int pmd_bad(pmd_t pmd)
{
return (pmd_flags(pmd) & ~(_PAGE_USER | _PAGE_ACCESSED)) !=
(_KERNPG_TABLE & ~_PAGE_ACCESSED);
return (pmd_flags(pmd) & ~_PAGE_USER) != _KERNPG_TABLE;
}
static inline unsigned long pages_to_mb(unsigned long npg)

5
arch/x86/mm/pgtable.c
View File

@@ -550,7 +550,7 @@ int ptep_test_and_clear_young(struct vm_area_struct *vma,
return ret;
}
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmdp)
{
@@ -562,9 +562,6 @@ int pmdp_test_and_clear_young(struct vm_area_struct *vma,
return ret;
}
#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
int pudp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long addr, pud_t *pudp)
{

4
include/linux/pgtable.h
View File

@@ -194,7 +194,7 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
#endif
#ifndef __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp)
@@ -215,7 +215,7 @@ static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
BUILD_BUG();
return 0;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG */
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH