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Re: [PATCH v2 05/10] x86/boot: Record MSR_ARCH_CAPS for the Raw and Host CPU policy
- To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Wed, 24 May 2023 15:03:07 +0100
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- Cc: Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Wed, 24 May 2023 14:03:48 +0000
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On 24/05/2023 12:25 pm, Andrew Cooper wrote:
> diff --git a/xen/arch/x86/cpu/common.c b/xen/arch/x86/cpu/common.c
> index 9bbb385db42d..f1084bb1ed36 100644
> --- a/xen/arch/x86/cpu/common.c
> +++ b/xen/arch/x86/cpu/common.c
> @@ -477,6 +477,11 @@ static void generic_identify(struct cpuinfo_x86 *c)
> cpuid_count(0xd, 1,
> &c->x86_capability[FEATURESET_Da1],
> &tmp, &tmp, &tmp);
> +
> + if (test_bit(X86_FEATURE_ARCH_CAPS, c->x86_capability))
> + rdmsr(MSR_ARCH_CAPABILITIES,
> + c->x86_capability[FEATURESET_10Al],
> + c->x86_capability[FEATURESET_10Ah]);
I managed to send out a stale version. I've corrected this and the
other instances locally.
~Andrew
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