lkml.org 
[lkml]   [2010]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 3/3] KVM: MMU: delay local tlb flush
delay local tlb flush until enter guest moden, it can reduce vpid flush
frequency and reduce remote tlb flush IPI(if KVM_REQ_TLB_FLUSH bit is
already set, IPI is not sent)

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
---
arch/x86/kvm/mmu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 7319098..75ddaa1 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2362,7 +2362,7 @@ static int nonpaging_init_context(struct kvm_vcpu *vcpu)
void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu)
{
++vcpu->stat.tlb_flush;
- kvm_x86_ops->tlb_flush(vcpu);
+ set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
}

static void paging_new_cr3(struct kvm_vcpu *vcpu)
--
1.6.1.2



\
 
 \ /
  Last update: 2010-06-08 14:13    [W:0.035 / U:0.820 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site