xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/mm: Only use tlb_remove_table() for paravirt

Browse Source 
If we don't use paravirt; don't play unnecessary and complicated games
to free page-tables.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra
2018-08-22 17:30:16 +02:00
committed by Linus Torvalds
parent fd1102f0aa
commit 48a8b97cfd
9 changed files with 26 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/kernel/kvm.c
View File

@@ -45,6 +45,7 @@
#include <asm/apic.h>
#include <asm/apicdef.h>
#include <asm/hypervisor.h>
#include <asm/tlb.h>
static int kvmapf = 1;
@@ -636,8 +637,10 @@ static void __init kvm_guest_init(void)
if (kvm_para_has_feature(KVM_FEATURE_PV_TLB_FLUSH) &&
!kvm_para_has_hint(KVM_HINTS_REALTIME) &&
kvm_para_has_feature(KVM_FEATURE_STEAL_TIME))
kvm_para_has_feature(KVM_FEATURE_STEAL_TIME)) {
pv_mmu_ops.flush_tlb_others = kvm_flush_tlb_others;
pv_mmu_ops.tlb_remove_table = tlb_remove_table;
}
if (kvm_para_has_feature(KVM_FEATURE_PV_EOI))
apic_set_eoi_write(kvm_guest_apic_eoi_write);