Re: [Xen-devel] [PATCH] xen/SandyBridge: reserve pages when integrated graphics

["Hao, Xudong" <xudong.hao@xxxxxxxxx>]

Include page 0x20110000, the five pages are in spec and I have confirmed.
 
> -----Original Message-----
> From: Hao, Xudong
> Sent: Monday, March 25, 2013 9:37 PM
> To: Jan Beulich
> Cc: xen-devel@xxxxxxxxxxxxx; keir@xxxxxxx
> Subject: RE: [PATCH] xen/SandyBridge: reserve pages when integrated graphics
> 
> > -----Original Message-----
> > From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> > Sent: Monday, March 25, 2013 9:07 PM
> > To: Hao, Xudong
> > Cc: xen-devel@xxxxxxxxxxxxx; keir@xxxxxxx
> > Subject: RE: [PATCH] xen/SandyBridge: reserve pages when integrated
> graphics
> >
> > >>> On 25.03.13 at 13:39, "Hao, Xudong" <xudong.hao@xxxxxxxxx> wrote:
> > >> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> > >> - removal of page 0x20110
> > >
> > > Linux kernel has put page 0x20110000 as bad, so we do not need to remove
> it
> > > from bad page list.
> > > Linux commit: a9acc5365dbda29f7be2884efb63771dc24bd815
> >
> > So then your earlier response was misleading, or at least confusing
> > me:
> >
> > "I did not get detail spec either, but linux kernel has remove this page
> >  0x20110000 already for the same reason, refer to commit:
> >  a9acc5365dbda29f7be2884efb63771dc24bd815".
> >
> > "Removed" to me meant removed from the list of bad PFNs. Note
> > that I didn't look at the commit, I just took your response as
> > confirming that this particular PFN got added to the list in error.
> 
> Sorry to confuse you, the earlier response really a little misleading. 
> Actually I
> want to say this page is inaccessible for SandyBridge graphic device.
> 
> > Now that you say that you actually meant the exact opposite,
> > we're back at the question why that PFN is in the list in the first
> > place, considering that none of the spec updates say so.
> >
> Let me try to find out the description on spec.


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