Re: [Xen-devel] [PATCH v5] x86/VPMU: implement ipc and arch filter flags

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 01/06/2016 06:43 AM, Jan Beulich wrote:
> > > > On 05.01.16 at 02:43, <bgregg@xxxxxxxxxxx> wrote:
> > This introduces a way to have a restricted VPMU, by specifying one of two
> > predefined groups of PMCs to make available. For secure environments, this
> > allows the VPMU to be used without needing to enable all PMCs.
> >
> > Signed-off-by: Brendan Gregg <bgregg@xxxxxxxxxxx>
> > Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> Does this hold with ...
>
> > ---
> > Changes in v5:
> > * addressing review comments from Kevin:
> > * simplified BTS DS_AREA filter
> > * improvements to comments, incl. matching Intel SDM descriptions
> ... all of these?
Yes.

Note that this patch will conflict with 
http://lists.xenproject.org/archives/html/xen-devel/2015-12/msg02753.html (for 
'case MSR_IA32_PEBS_ENABLE' in core2_vpmu_do_wrmsr()). I can rebase it 
on top of Brendan's if you prefer.

-boris

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