Re: [Xen-devel] [PATCH resend] vt-d: Fix IM bit mask and unmask of Fault Event Control Register.

["Xu, Quan" <quan.xu@xxxxxxxxx>]

> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
> Sent: Friday, September 25, 2015 2:44 PM
> To: Xu, Quan; Zhang, Yang Z
> Cc: Tian, Kevin; xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] [PATCH resend] vt-d: Fix IM bit mask and unmask of
> Fault Event Control Register.
> 
> >>> On 25.09.15 at 04:29, <quan.xu@xxxxxxxxx> wrote:
> > Bit 0:29 in Fault Event Control Register are 'Reserved and Preserved',
> > software cannot write 0 to it unconditionally. Software must preserve
> > the value read for writes.
> >
> > Signed-off-by: Quan Xu <quan.xu@xxxxxxxxx>
> > Acked-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
> 
> I'll apply it considering it got acked,

Jan, Thanks!

> but doesn't the write in
> init_vtd_hw() need similar adjustment then?

Yes, I will send out another patch to fix it.


Quan

> 
> Jan


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