Messages in this thread |  | | Date | Mon, 14 Apr 2025 14:24:32 +0800 | | Subject | Re: [PATCH] KVM: VMX: Flush shadow VMCS on emergency reboot | | From | Xiaoyao Li <> |
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On 4/12/2025 12:57 AM, Sean Christopherson wrote: >> If a VMM wants to leverage the VMXOFF behavior, software enumeration >> might be needed for nested virtualization. Using CPU F/M/S (SPR+) to >> enumerate a behavior could be problematic for virtualization. Right? > Yeah, F/M/S is a bad idea. Architecturally, I think the behavior needs to be > tied to support for SEAM. Is there a safe-ish way to probe for SEAM support, > without having to glean it from MSR_IA32_MKTME_KEYID_PARTITIONING?
yes, the bit 15 of MSR_IA32_MTRRCAP.
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