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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2022-05-12 20:23:06 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-05-13 07:20:17 -0700 |
| commit | e5a554014618308f046af99ab9c950165ed6cb11 (patch) | |
| tree | 791e507295883bf1acfed18d85cdbe0684ea7586 /mm/page_table_check.c | |
| parent | 92fb05242a1b1ecfcb39d9b1421a165adf344a3c (diff) | |
| download | linux-e5a554014618308f046af99ab9c950165ed6cb11.tar.gz linux-e5a554014618308f046af99ab9c950165ed6cb11.tar.bz2 linux-e5a554014618308f046af99ab9c950165ed6cb11.zip | |
mm: page_table_check: move pxx_user_accessible_page into x86
The pxx_user_accessible_page() checks the PTE bit, it's
architecture-specific code, move them into x86's pgtable.h.
These helpers are being moved out to make the page table check framework
platform independent.
Link: https://lkml.kernel.org/r/20220507110114.4128854-3-tongtiangen@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>
Acked-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_table_check.c')
| -rw-r--r-- | mm/page_table_check.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/mm/page_table_check.c b/mm/page_table_check.c index eb0d0b71cdf6..3692bea2ea2c 100644 --- a/mm/page_table_check.c +++ b/mm/page_table_check.c @@ -52,23 +52,6 @@ static struct page_table_check *get_page_table_check(struct page_ext *page_ext) return (void *)(page_ext) + page_table_check_ops.offset; } -static inline bool pte_user_accessible_page(pte_t pte) -{ - return (pte_val(pte) & _PAGE_PRESENT) && (pte_val(pte) & _PAGE_USER); -} - -static inline bool pmd_user_accessible_page(pmd_t pmd) -{ - return pmd_leaf(pmd) && (pmd_val(pmd) & _PAGE_PRESENT) && - (pmd_val(pmd) & _PAGE_USER); -} - -static inline bool pud_user_accessible_page(pud_t pud) -{ - return pud_leaf(pud) && (pud_val(pud) & _PAGE_PRESENT) && - (pud_val(pud) & _PAGE_USER); -} - /* * An enty is removed from the page table, decrement the counters for that page * verify that it is of correct type and counters do not become negative. |