From: Gleb Natapov <gleb@redhat.com>
Date: Thu, 14 Oct 2010 09:22:54 +0000 (+0200)
Subject: KVM paravirt: Handle async PF in non preemptable context
X-Git-Tag: v2.6.38-rc1~244^2~132
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c047cd982f944fa63b2d96de2a06463d113f9fa;p=pandora-kernel.git

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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