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| author |   Rik van Riel <riel@surriel.com> | 2018-09-25 23:58:42 -0400 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2018-10-09 16:51:12 +0200 |
| commit | 016c4d92cd16f569c6485ae62b076c1a4b779536 (patch) | |
| tree | b734bacfc71fe52ac281da272536d5156ec8a252 /arch/x86/kernel/ldt.c | |
| parent | smp,cpumask: introduce on_each_cpu_cond_mask (diff) | |
| download | linux-dev-016c4d92cd16f569c6485ae62b076c1a4b779536.tar.xz linux-dev-016c4d92cd16f569c6485ae62b076c1a4b779536.zip | |
x86/mm/tlb: Add freed_tables argument to flush_tlb_mm_range
Add an argument to flush_tlb_mm_range to indicate whether page tables
are about to be freed after this TLB flush. This allows for an
optimization of flush_tlb_mm_range to skip CPUs in lazy TLB mode.
No functional changes.
Cc: npiggin@gmail.com
Cc: mingo@kernel.org
Cc: will.deacon@arm.com
Cc: songliubraving@fb.com
Cc: kernel-team@fb.com
Cc: luto@kernel.org
Cc: hpa@zytor.com
Signed-off-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180926035844.1420-6-riel@surriel.com
Diffstat (limited to 'arch/x86/kernel/ldt.c')
| -rw-r--r-- | arch/x86/kernel/ldt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index 7fdb2414ca65..ab18e0884dc6 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -273,7 +273,7 @@ map_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt, int slot) map_ldt_struct_to_user(mm); va = (unsigned long)ldt_slot_va(slot); - flush_tlb_mm_range(mm, va, va + LDT_SLOT_STRIDE, PAGE_SHIFT); + flush_tlb_mm_range(mm, va, va + LDT_SLOT_STRIDE, PAGE_SHIFT, false); ldt->slot = slot; return 0; |