Re: [Xen-devel] [PATCH] oprofile: Add X7542 and E7-8837 to the list of supported cpus

[Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx>]

Am Dienstag 27 November 2012, 13:04:36 schrieb Jan Beulich:
> >>> On 26.11.12 at 13:52, Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx> wrote:
> > Add intel cpus X7542 and E7-8837 to the list of supported cpus.
> > 
> > Thanks.
> > Dietmar.
> > 
> > Signed-off-by: Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx>
> > 
> > diff -r 0049de3827bc -r 6fb0129600cd xen/arch/x86/oprofile/nmi_int.c
> > --- a/xen/arch/x86/oprofile/nmi_int.c   Fri Nov 23 11:06:15 2012 +0000
> > +++ b/xen/arch/x86/oprofile/nmi_int.c   Mon Nov 26 13:36:00 2012 +0100
> > @@ -366,6 +366,8 @@ static int __init ppro_init(char ** cpu_
> >                 ppro_has_global_ctrl = 1;
> >                 break;
> >         case 26:
> > +       case 46:
> > +       case 47:
> >                 arch_perfmon_setup_counters();
> >                 *cpu_type = "i386/core_i7";
> >                 ppro_has_global_ctrl = 1;
> 
> Actually, and apart from the patch being white space damaged,
> after a closer look I think this is wrong - these newer CPUs
> shouldn't get be handled here, but instead should be covered by
> arch_perfmon_init(). Are you observing X86_FEATURE_ARCH_PERFMON
> not getting set on these CPUs by init_intel()?

Yes you are right. I wasn't aware of this!
Dietmar.

> 
> Jan
> 
> 
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