From: Gleb Natapov <gleb@redhat.com>
Date: Wed, 4 May 2011 13:31:04 +0000 (+0300)
Subject: KVM: make guest mode entry to be rcu quiescent state
X-Git-Tag: v3.0-rc1~350^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8fa2206821953a50a3a02ea33fcfb3ced2fd9997;p=pandora-kernel.git

KVM: make guest mode entry to be rcu quiescent state

KVM does not hold any references to rcu protected data when it switches
CPU into a guest mode. In fact switching to a guest mode is very similar
to exiting to userspase from rcu point of view. In addition CPU may stay
in a guest mode for quite a long time (up to one time slice). Lets treat
guest mode as quiescent state, just like we do with user-mode execution.

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