linux-kernel - Re: [PATCH 1/3] X86/nVMX: Properly set spec_ctrl and pred

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Date:   Fri, 9 Feb 2018 15:15:38 -0800
From:   Jim Mattson <jmattson@...gle.com>
To:     KarimAllah Ahmed <karahmed@...zon.de>
Cc:     kvm list <kvm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>
Subject: Re: [PATCH 1/3] X86/nVMX: Properly set spec_ctrl and pred_cmd before
 merging MSRs

On Thu, Feb 8, 2018 at 2:53 PM, KarimAllah Ahmed <karahmed@...zon.de> wrote:
> These two variables should check whether SPEC_CTRL and PRED_CMD are
> supposed to be passed through to L2 guests or not. While
> msr_write_intercepted_l01 would return 'true' if it is not passed through.
>
> So just invert the result of msr_write_intercepted_l01 to implement the
> correct semantics.
>
> Fixes: 086e7d4118cc ("KVM: VMX: Allow direct access to MSR_IA32_SPEC_CTRL")
> Signed-off-by: KarimAllah Ahmed <karahmed@...zon.de>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: Radim Krčmář <rkrcmar@...hat.com>
> Cc: kvm@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org

Reviewed-by: Jim Mattson <jmattson@...gle.com>