Re: [PATCH 2/5] KVM: svm: Disallow EFER.LMSLE on hardware that doesn't support it

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On Sun, Sep 18, 2022 at 12:04 PM Borislav Petkov <bp@xxxxxxxxx> wrote:
>
> On Fri, Sep 16, 2022 at 10:33:29PM +0000, Sean Christopherson wrote:
> > ...
> > Either way, KVM appears to be carrying a half-baked "fix" for a buggy guest that's
> > long since gone.  So like we did in commit 8805875aa473 ("Revert "KVM: nVMX: Do not
> > expose MPX VMX controls when guest MPX disabled""), I think we should just revert
> > the "fix".
>
> If, as message 0/5 says, setting this bit so that SLE11 Xen 4.0 boots as
> a nested hypervisor is the use case, then sure, unconditional NO_LSMLE
> and we all should go on with our lives.

Fantastic! That's what I'll do in V2.



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