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Re: [PATCH v3 2/4] xen/pv: fix vendor checks for pmu emulation
- To: Juergen Gross <jgross@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 5 Oct 2022 13:59:03 +0200
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- Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx
- Delivery-date: Wed, 05 Oct 2022 11:59:13 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 05.10.2022 13:03, Juergen Gross wrote:
> The CPU vendor checks for pmu emulation are rather limited today, as
> the assumption seems to be that only Intel and AMD are existing and/or
> supported vendors.
>
> Fix that by handling Centaur and Zhaoxin CPUs the same way as Intel,
> and Hygon the same way as AMD.
>
> While at it fix the return type of is_intel_pmu_msr().
>
> Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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