From: Qing He <qing.he@intel.com>
Date: Mon, 17 Sep 2007 06:47:13 +0000 (+0800)
Subject: KVM: deliver PIC interrupt only to vcpu0
X-Git-Tag: v2.6.24-rc1~1365^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40487c680d5855459dfdce340df13d40071bb774;p=pandora-kernel.git

KVM: deliver PIC interrupt only to vcpu0

This patch changes the PIC interrupts delivery. Now it is only delivered
to vcpu0 when either condition is met (on vcpu0):
  1. local APIC is hardware disabled
  2. LVT0 is unmasked and configured to delivery mode ExtInt

It fixes the 2x faster wall clock on x86_64 and SMP i386 Linux guests

Signed-off-by: Eddie (Yaozu) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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