KVM: MMU: optimize pte write path if don't have protected sp

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Simply return from kvm_mmu_pte_write path if no shadow page is
write-protected, then we can avoid to walk all shadow pages and hold
mmu-lock

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Xiao Guangrong 2011-05-15 23:20:27 +08:00 • committed by Avi Kivity

parent 96304217a7

commit 332b207d65

2 changed files with 10 additions and 0 deletions

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arch/x86/include/asm/kvm_host.h

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9

arch/x86/kvm/mmu.c

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