tree df3892f624910d2a6b210e30549a6a82a79e5474
parent 9e02fb963352c5ad075d80dd3e852fbee9585575
author Gleb Natapov <gleb@redhat.com> 1296559307 +0200
committer Avi Kivity <avi@redhat.com> 1302084955 +0300

KVM: Enable async page fault processing

If asynchronous hva_to_pfn() is requested call GUP with FOLL_NOWAIT to
avoid sleeping on IO. Check for hwpoison is done at the same time,
otherwise check_user_page_hwpoison() will call GUP again and will put
vcpu to sleep.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>