Re: [Xen-devel] [PATCH 02/11] x86/vmx: Don't clobber %dr6 while debugging state is lazy

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> Sent: Tuesday, July 17, 2018 5:28 PM
> 
> On 04/06/18 14:59, Andrew Cooper wrote:
> > c/s 4f36452b63 introduced a write to %dr6 in the #DB intercept case, but
> the
> > guests debug registers may be lazy at this point, at which point the guests
> > later attempt to read %dr6 will discard this value and use the older stale
> > value.
> >
> > Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> > ---
> > CC: Jan Beulich <JBeulich@xxxxxxxx>
> > CC: Wei Liu <wei.liu2@xxxxxxxxxx>
> > CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> > CC: Jun Nakajima <jun.nakajima@xxxxxxxxx>
> > CC: Kevin Tian <kevin.tian@xxxxxxxxx>
> 
> Ping

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>
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