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| author |   Nicholas Piggin <npiggin@gmail.com> | 2021-04-29 22:58:33 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 11:20:40 -0700 |
| commit | 168a6333142bfa6dfb1f114110465760828bc6a3 (patch) | |
| tree | 061af524bb7a3fd2ed7f1f200409cef6ab518b88 /arch/arm64/mm/mmu.c | |
| parent | powerpc: inline huge vmap supported functions (diff) | |
| download | linux-dev-168a6333142bfa6dfb1f114110465760828bc6a3.tar.xz linux-dev-168a6333142bfa6dfb1f114110465760828bc6a3.zip | |
arm64: inline huge vmap supported functions
This allows unsupported levels to be constant folded away, and so
p4d_free_pud_page can be removed because it's no longer linked to.
Link: https://lkml.kernel.org/r/20210317062402.533919-9-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm64/mm/mmu.c')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 8436e0755361..70fa3cdbe841 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1339,27 +1339,6 @@ void *__init fixmap_remap_fdt(phys_addr_t dt_phys, int *size, pgprot_t prot) return dt_virt; } -bool arch_vmap_p4d_supported(pgprot_t prot) -{ - return false; -} - -bool arch_vmap_pud_supported(pgprot_t prot) -{ - /* - * Only 4k granule supports level 1 block mappings. - * SW table walks can't handle removal of intermediate entries. - */ - return IS_ENABLED(CONFIG_ARM64_4K_PAGES) && - !IS_ENABLED(CONFIG_PTDUMP_DEBUGFS); -} - -bool arch_vmap_pmd_supported(pgprot_t prot) -{ - /* See arch_vmap_pud_supported() */ - return !IS_ENABLED(CONFIG_PTDUMP_DEBUGFS); -} - int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot) { pud_t new_pud = pfn_pud(__phys_to_pfn(phys), mk_pud_sect_prot(prot)); @@ -1451,11 +1430,6 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr) return 1; } -int p4d_free_pud_page(p4d_t *p4d, unsigned long addr) -{ - return 0; /* Don't attempt a block mapping */ -} - #ifdef CONFIG_MEMORY_HOTPLUG static void __remove_pgd_mapping(pgd_t *pgdir, unsigned long start, u64 size) { |