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KVM: Make shadow pte updates atomic
authorAvi Kivity <avi@qumranet.com>
Thu, 31 May 2007 12:23:35 +0000 (15:23 +0300)
committerAvi Kivity <avi@qumranet.com>
Mon, 16 Jul 2007 09:05:44 +0000 (12:05 +0300)
commit0d551bb698e1328f685ae3611c4a4a96f41bef97
tree4668ee0dc19571e4f05443555ec0e807692572e6tree | snapshot
parenta18de5a403f9b5010527b2e7b05049b539b4facdcommit | diff
KVM: Make shadow pte updates atomic

With guest smp, a second vcpu might see partial updates when the first
vcpu services a page fault.  So delay all updates until we have figured
out what the pte should look like.

Note that on i386, this is still not completely atomic as a 64-bit write
will be split into two on a 32-bit machine.

Signed-off-by: Avi Kivity <avi@qumranet.com>
drivers/kvm/paging_tmpl.h diff | blob | history
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