Messages in this thread | | | From | Takahiro Itazuri <> | Subject | Re: [PATCH 0/2] KVM: x86: Propagate AMD-specific IBRS bits to guests | Date | Tue, 28 Feb 2023 19:41:53 +0000 |
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Date: Tue, 28 Feb 2023 20:24:12 +0100 From: Borislav Petkov <bp@alien8.de> > I'd prefer if VMMs did supply whatever they prefer to the guests > instead. None of those bits are used in the kernel for mitigations, as > you've realized.
It is true that the kernel does not use those bits at all, but any codes could be run inside guests.
One of examples is the following spectre/meltdown checker scipt used as de facto standard. https://github.com/speed47/spectre-meltdown-checker/blob/master/spectre-meltdown-checker.sh#L2768
Best regards, Takahiro Itazuri
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