From: Gleb Natapov <gleb@redhat.com>
Date: Tue, 1 Feb 2011 11:21:47 +0000 (+0200)
Subject: KVM: Enable async page fault processing
X-Git-Tag: v2.6.39-rc3~19^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0857b9e95c1af8bfe84630ef6747b9d4d61de4c6;p=pandora-kernel.git

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>
---

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