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| author |   Anshuman Khandual <anshuman.khandual@arm.com> | 2022-02-16 10:36:52 +0530 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2022-03-07 21:44:22 +0000 |
| commit | 1310222c276b7946e440a7ab49c1e1508561f5fd (patch) | |
| tree | 6197d0f19b5d13920717fa033c19817c1d69d937 /arch/arm64/mm/mmu.c | |
| parent | arm64: avoid flushing icache multiple times on contiguous HugeTLB (diff) | |
| download | linux-dev-1310222c276b7946e440a7ab49c1e1508561f5fd.tar.xz linux-dev-1310222c276b7946e440a7ab49c1e1508561f5fd.zip | |
arm64/mm: Drop use_1G_block()
pud_sect_supported() already checks for PUD level block mapping support i.e
on ARM64_4K_PAGES config. Hence pud_sect_supported(), along with some other
required alignment checks can help completely drop use_1G_block().
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/1644988012-25455-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/mm/mmu.c')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 1681430ecab7..12feac701d8e 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -295,18 +295,6 @@ static void alloc_init_cont_pmd(pud_t *pudp, unsigned long addr, } while (addr = next, addr != end); } -static inline bool use_1G_block(unsigned long addr, unsigned long next, - unsigned long phys) -{ - if (PAGE_SHIFT != 12) - return false; - - if (((addr | next | phys) & ~PUD_MASK) != 0) - return false; - - return true; -} - static void alloc_init_pud(pgd_t *pgdp, unsigned long addr, unsigned long end, phys_addr_t phys, pgprot_t prot, phys_addr_t (*pgtable_alloc)(int), @@ -345,7 +333,8 @@ static void alloc_init_pud(pgd_t *pgdp, unsigned long addr, unsigned long end, /* * For 4K granule only, attempt to put down a 1GB block */ - if (use_1G_block(addr, next, phys) && + if (pud_sect_supported() && + ((addr | next | phys) & ~PUD_MASK) == 0 && (flags & NO_BLOCK_MAPPINGS) == 0) { pud_set_huge(pudp, phys, prot); |