| commit | 9a3aad70572c3f4d55e7f09ac4eb313d41d0a484 | |
| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | |
| Fri, 16 Jul 2010 03:30:18 +0000 (16 11:30 +0800) | ||
| committer | Avi Kivity <avi@redhat.com> | |
| Mon, 2 Aug 2010 03:41:01 +0000 (2 06:41 +0300) | ||
| tree | f3c1efd08eed5b0f37078c9b91658e25e7775808 | treesnapshot (tar.gz zip) |
| parent | e4b502ead259fcf70839414abb7c8cdc3b523f01 | commitdiff |
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>
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>
| arch/x86/kvm/mmu.c | diffblobblamehistory |