linux-kernel - Re: [PATCH] KVM: x86: Make CR4.VMXE reserved for the guest

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Message-ID: <CALMp9eQGgDJE9kYA6vGM67iCdtfgYqPHxBXGSCGfEtqo858pmw@mail.gmail.com>
Date:   Wed, 8 Jul 2020 11:19:35 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, kvm list <kvm@...r.kernel.org>
Subject: Re: [PATCH] KVM: x86: Make CR4.VMXE reserved for the guest

On Wed, Jul 8, 2020 at 4:04 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> CR4.VMXE is reserved unless the VMX CPUID bit is set.  On Intel,
> it is also tested by vmx_set_cr4, but AMD relies on kvm_valid_cr4,
> so fix it.
>
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Reviewed-by: Jim Mattson <jmattson@...gle.com>