Re: [RFC PATCH v2 08/11] KVM: VMX: Advertise MITI_ENUM_RETPOLINE_S_SUPPORT

[Liu, Jingqi]

On 4/14/2023 2:25 PM, Chao Gao wrote:
> Allow guest to query if the underying VMM understands Retpoline and
> report the statue of Retpoline in suprevisor mode i.e. CPL < 3 via
s/statue/status
> MSR_VIRTUAL_MITIGATION_ENUM/CTRL.
>
> Disable RRSBA behavior by setting RRSBA_DIS_S for guest if guest is
> using retpoline and the processor has the behavior.
>
> Signed-off-by: Zhang Chen <chen.zhang@xxxxxxxxx>
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
> Tested-by: Jiaan Lu <jiaan.lu@xxxxxxxxx>
> ---
Thanks,
Jingqi