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authorGleb Natapov <gleb@redhat.com>2010-10-14 11:22:54 +0200
committerAvi Kivity <avi@redhat.com>2011-01-12 10:23:19 +0100
commit6c047cd982f944fa63b2d96de2a06463d113f9fa (patch)
tree33ea24341320d9adda2d2d3c0314a7244bac7862 /drivers/net
parentKVM: Inject asynchronous page fault into a PV guest if page is swapped out. (diff)
downloadlinux-6c047cd982f944fa63b2d96de2a06463d113f9fa.tar.xz
linux-6c047cd982f944fa63b2d96de2a06463d113f9fa.zip
KVM paravirt: Handle async PF in non preemptable context
If async page fault is received by idle task or when preemp_count is not zero guest cannot reschedule, so do sti; hlt and wait for page to be ready. vcpu can still process interrupts while it waits for the page to be ready. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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