KVM: Make shadow pte updates atomic

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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>

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This commit is contained in:

Avi Kivity 2007-05-31 15:23:35 +03:00

parent a18de5a403

commit 0d551bb698

1 changed files with 20 additions and 17 deletions

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37

drivers/kvm/paging_tmpl.h

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