Xiao Guangrong 9a3aad7057 KVM: MMU: using __xchg_spte more smarter ...

Sometimes, atomically set spte is not needed, this patch call __xchg_spte()
more smartly

Note: if the old mapping's access bit is already set, we no need atomic operation
since the access bit is not lost

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

2010-08-02 06:41:01 +03:00

86 KiB

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