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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2019-05-27 06:58:15 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-06-04 15:49:58 +0300 |
| commit | f7f0097af67c3c119f6dc7046234630e77f4877e (patch) | |
| tree | 752abec1505a01e7b67497e67afa18b057aec90a /arch/arm64/include/asm/pgtable.h | |
| parent | 7b8c87b297a7c1b3badabc1d054b6e0b758952df (diff) | |
| download | linux-f7f0097af67c3c119f6dc7046234630e77f4877e.tar.xz | |
arm64/mm: Simplify protection flag creation for kernel huge mappings
Even though they have got the same value, PMD_TYPE_SECT and PUD_TYPE_SECT
get used for kernel huge mappings. But before that first the table bit gets
cleared using leaf level PTE_TABLE_BIT. Though functionally they are same,
we should use page table level specific macros to be consistent as per the
MMU specifications. Create page table level specific wrappers for kernel
huge mapping entries and just drop mk_sect_prot() which does not have any
other user.
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 2c41b04708fe..6478dd121228 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -335,9 +335,14 @@ static inline pmd_t pte_pmd(pte_t pte) return __pmd(pte_val(pte)); } -static inline pgprot_t mk_sect_prot(pgprot_t prot) +static inline pgprot_t mk_pud_sect_prot(pgprot_t prot) { - return __pgprot(pgprot_val(prot) & ~PTE_TABLE_BIT); + return __pgprot((pgprot_val(prot) & ~PUD_TABLE_BIT) | PUD_TYPE_SECT); +} + +static inline pgprot_t mk_pmd_sect_prot(pgprot_t prot) +{ + return __pgprot((pgprot_val(prot) & ~PMD_TABLE_BIT) | PMD_TYPE_SECT); } #ifdef CONFIG_NUMA_BALANCING |