ACK: [PATCH 0/1][kinetic/linux-azure] Azure: Performance improvement for TDX

[Bartlomiej Zolnierkiewicz]

Acked-by: Bartlomiej Zolnierkiewicz <bartlomiej.zolnierkiewicz at canonical.com>

On Sat, Jan 28, 2023 at 11:51 PM Tim Gardner <tim.gardner at canonical.com> wrote:
>
> https://bugs.launchpad.net/bugs/2004090
>
> SRU Justification
>
> [Impact]
>
> ms_hyperv_init_platform() hides HV_MSR_REFERENCE_TSC_AVAILABLE for TDX guests in
> favor of Invariant-TSC. In this case, we should also downgrade the rating of
> hyperv_cs_msr.rating, so Invariant-TSC can be used by default.
>
> [Fix]
>
> https://github.com/dcui/tdx.git 367f18c06ac999c2822b0c24f50a87994635d4bd
>
> [Where things could go wrong]
>
> TDX guests may perform worse.
>