diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-04-30 08:58:36 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 21:20:40 +0300 |
| commit | 97dc2a1548ab0dc320ce3618b73b3f9dc732b6ee (patch) | |
| tree | daa022e90b2b5f2f6a28e7ed2654b299fa6c551c /arch/x86/include/asm/vmalloc.h | |
| parent | 168a6333142bfa6dfb1f114110465760828bc6a3 (diff) | |
| download | linux-97dc2a1548ab0dc320ce3618b73b3f9dc732b6ee.tar.xz | |
x86: 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/20210317062402.533919-10-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/include/asm/vmalloc.h')
| -rw-r--r-- | arch/x86/include/asm/vmalloc.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/arch/x86/include/asm/vmalloc.h b/arch/x86/include/asm/vmalloc.h index 094ea2b565f3..e714b00fc0ca 100644 --- a/arch/x86/include/asm/vmalloc.h +++ b/arch/x86/include/asm/vmalloc.h @@ -1,13 +1,29 @@ #ifndef _ASM_X86_VMALLOC_H #define _ASM_X86_VMALLOC_H +#include <asm/cpufeature.h> #include <asm/page.h> #include <asm/pgtable_areas.h> #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -bool arch_vmap_p4d_supported(pgprot_t prot); -bool arch_vmap_pud_supported(pgprot_t prot); -bool arch_vmap_pmd_supported(pgprot_t prot); +static inline bool arch_vmap_p4d_supported(pgprot_t prot) +{ + return false; +} + +static inline bool arch_vmap_pud_supported(pgprot_t prot) +{ +#ifdef CONFIG_X86_64 + return boot_cpu_has(X86_FEATURE_GBPAGES); +#else + return false; +#endif +} + +static inline bool arch_vmap_pmd_supported(pgprot_t prot) +{ + return boot_cpu_has(X86_FEATURE_PSE); +} #endif #endif /* _ASM_X86_VMALLOC_H */ |