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Re: [PATCH 4/8] x86/spec-ctrl: Drop use_spec_ctrl boolean
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 26 Jan 2022 17:54:58 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Wed, 26 Jan 2022 16:55:06 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 26.01.2022 09:44, Andrew Cooper wrote:
> Several bugfixes have reduced the utility of this variable from it's original
> purpose, and now all it does is aid in the setup of SCF_ist_wrmsr.
>
> Simplify the logic by drop the variable, and doubling up the setting of
> SCF_ist_wrmsr for the PV and HVM blocks, which will make the AMD SPEC_CTRL
> support easier to follow. Leave a comment explaining why SCF_ist_wrmsr is
> still necessary for the VMExit case.
>
> No functional change.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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