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Re: [PATCH v3 1/4] xen/pv: add fault recovery control to pmu msr accesses
- To: Juergen Gross <jgross@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 5 Oct 2022 13:58:41 +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 11:58:49 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 05.10.2022 13:02, Juergen Gross wrote:
> Today pmu_msr_read() and pmu_msr_write() fall back to the safe variants
> of read/write MSR in case the MSR access isn't emulated via Xen. Allow
> the caller to select that faults should not be recovered from by passing
> NULL for the error pointer.
>
> Restructure the code to make it more readable.
>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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