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Re: [PATCH v2 3/4] x86/cpuid: Introduce dom0-cpuid command line option
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 16 Dec 2021 17:45:57 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 16 Dec 2021 16:46:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15.12.2021 23:21, Andrew Cooper wrote:
> Specifically, this lets the user opt in to non-default for dom0.
>
> Collect all dom0 settings together in dom0_{en,dis}able_feat[], and apply it
> to dom0's policy when other tweaks are being made.
>
> As recalculate_cpuid_policy() is an expensive action, and dom0-cpuid= is
> likely to only be used by the x86 maintainers for development purposes, forgo
> the recalculation in the general case.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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