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

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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



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