[PATCH 1/2 V3] KVM: x86: reset RVI upon system reset

[Tim Gardner]

On 02/15/2017 06:20 AM, Thadeu Lima de Souza Cascardo wrote:
> On Tue, Feb 14, 2017 at 06:50:49AM -0700, Tim Gardner wrote:
>> From: Wei Wang <wei.w.wang at intel.com>
>>
>> BugLink: http://bugs.launchpad.net/bugs/1660519
>>
>> A bug was reported as follows: when running Windows 7 32-bit guests on qemu-kvm,
>> sometimes the guests run into blue screen during reboot. The problem was that a
>> guest's RVI was not cleared when it rebooted. This patch has fixed the problem.
>>
>> Signed-off-by: Wei Wang <wei.w.wang at intel.com>
>> Signed-off-by: Yang Zhang <yang.z.zhang at intel.com>
>> Tested-by: Rongrong Liu <rongrongx.liu at intel.com>, Da Chun <ngugc at qq.com>
>> Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
>> (back ported from commit 4114c27d450bef228be9c7b0c40a888e18a3a636)
>> Signed-off-by: Tim Gardner <tim.gardner at canonical.com>
>>
> 
> Why not cherry-pick 963fee1656603ce2e91ebb988cd5a92f2af41369, as
> suggested by Stefan Bader? This would have made this both (963fee16 and
> 4114c27d) clean cherry picks.
> 
> Cascardo.

While 963fee1656603ce2e91ebb988cd5a92f2af41369 does make both 963fee16
and 4114c27d clean cherry-picks, it does not solve the problem that
DR6_RTM is not defined. So, I took the simplest route with the least
mount of code churn.

rtg
-- 
Tim Gardner tim.gardner at canonical.com