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| author | Peter Zijlstra <peterz@infradead.org> | 2018-12-03 18:03:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-12-17 18:54:26 +0100 |
| commit | 935f5839827ef54b53406e80906f7c355eb73c1b (patch) | |
| tree | 7ec68e734244764f504c5f42246185107b9d0e64 /arch/x86/mm/tlb.c | |
| parent | x86/mm/cpa: Simplify the code after making cpa->vaddr invariant (diff) | |
| download | linux-935f5839827ef54b53406e80906f7c355eb73c1b.tar.xz linux-935f5839827ef54b53406e80906f7c355eb73c1b.zip | |
x86/mm/cpa: Optimize cpa_flush_array() TLB invalidation
Instead of punting and doing tlb_flush_all(), do the same as
flush_tlb_kernel_range() does and use single page invalidations.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom.StDenis@amd.com
Cc: dave.hansen@intel.com
Link: http://lkml.kernel.org/r/20181203171043.430001980@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm/tlb.c')
| -rw-r--r-- | arch/x86/mm/tlb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 03b6b4c2238d..999d6d8f0bef 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -15,6 +15,8 @@ #include <asm/apic.h> #include <asm/uv/uv.h> +#include "mm_internal.h" + /* * TLB flushing, formerly SMP-only * c/o Linus Torvalds. @@ -721,7 +723,7 @@ void native_flush_tlb_others(const struct cpumask *cpumask, * * This is in units of pages. */ -static unsigned long tlb_single_page_flush_ceiling __read_mostly = 33; +unsigned long tlb_single_page_flush_ceiling __read_mostly = 33; void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned int stride_shift, |