From: Avi Kivity <avi@redhat.com>
Date: Tue, 27 Jul 2010 09:30:24 +0000 (+0300)
Subject: KVM: Check for pending events before attempting injection
X-Git-Tag: v2.6.37-rc1~142^2~39
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3842d135ff246b6543f1df77f5600e12094a6845;p=pandora-kernel.git

KVM: Check for pending events before attempting injection

Instead of blindly attempting to inject an event before each guest entry,
check for a possible event first in vcpu->requests.  Sites that can trigger
event injection are modified to set KVM_REQ_EVENT:

- interrupt, nmi window opening
- ppr updates
- i8259 output changes
- local apic irr changes
- rflags updates
- gif flag set
- event set on exit

This improves non-injecting entry performance, and sets the stage for
non-atomic injection.

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