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| author | Gavin Shan <gshan@redhat.com> | 2020-04-28 02:46:55 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-04-28 16:11:12 +0300 |
| commit | 68ecabd0e680a4ceaf950ae189a55d4730d10c64 (patch) | |
| tree | 76d0e0d489baf4d29b6c06926edd4e6decee662a /arch/arm64/include/asm/pgtable.h | |
| parent | 2eaf63ba84dc2fa4cecd717e917ea882be08069b (diff) | |
| download | linux-68ecabd0e680a4ceaf950ae189a55d4730d10c64.tar.xz | |
arm64/mm: Use phys_to_page() to access pgtable memory
The macros {pgd, pud, pmd}_page() retrieves the page struct of the
corresponding page frame, which is reserved as page table. There
is already a macro (phys_to_page), defined in memory.h as below,
to convert the physical address to the page struct. Also, the header
file (memory.h) has been included by pgtable.h.
#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
So it's reasonable to use the macro in pgtable.h.
Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20200427234655.111847-1-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 538c85e62f86..8c20e2bd6287 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -508,7 +508,7 @@ static inline void pte_unmap(pte_t *pte) { } #define pte_set_fixmap_offset(pmd, addr) pte_set_fixmap(pte_offset_phys(pmd, addr)) #define pte_clear_fixmap() clear_fixmap(FIX_PTE) -#define pmd_page(pmd) pfn_to_page(__phys_to_pfn(__pmd_to_phys(pmd))) +#define pmd_page(pmd) phys_to_page(__pmd_to_phys(pmd)) /* use ONLY for statically allocated translation tables */ #define pte_offset_kimg(dir,addr) ((pte_t *)__phys_to_kimg(pte_offset_phys((dir), (addr)))) @@ -566,7 +566,7 @@ static inline phys_addr_t pud_page_paddr(pud_t pud) #define pmd_set_fixmap_offset(pud, addr) pmd_set_fixmap(pmd_offset_phys(pud, addr)) #define pmd_clear_fixmap() clear_fixmap(FIX_PMD) -#define pud_page(pud) pfn_to_page(__phys_to_pfn(__pud_to_phys(pud))) +#define pud_page(pud) phys_to_page(__pud_to_phys(pud)) /* use ONLY for statically allocated translation tables */ #define pmd_offset_kimg(dir,addr) ((pmd_t *)__phys_to_kimg(pmd_offset_phys((dir), (addr)))) @@ -624,7 +624,7 @@ static inline phys_addr_t pgd_page_paddr(pgd_t pgd) #define pud_set_fixmap_offset(pgd, addr) pud_set_fixmap(pud_offset_phys(pgd, addr)) #define pud_clear_fixmap() clear_fixmap(FIX_PUD) -#define pgd_page(pgd) pfn_to_page(__phys_to_pfn(__pgd_to_phys(pgd))) +#define pgd_page(pgd) phys_to_page(__pgd_to_phys(pgd)) /* use ONLY for statically allocated translation tables */ #define pud_offset_kimg(dir,addr) ((pud_t *)__phys_to_kimg(pud_offset_phys((dir), (addr)))) |