KVM: MMU: introduce SPTE_MMU_WRITEABLE bit

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This bit indicates whether the spte can be writable on MMU, that means
the corresponding gpte is writable and the corresponding gfn is not
protected by shadow page protection

In the later path, SPTE_MMU_WRITEABLE will indicates whether the spte
can be locklessly updated

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Xiao Guangrong 2012-06-20 15:58:58 +08:00 • committed by Avi Kivity

parent 6e7d035407

commit 49fde3406f

1 changed files with 38 additions and 19 deletions

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arch/x86/kvm/mmu.c

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