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Date:   Fri, 15 Jun 2018 20:57:40 +0200 (CEST)
From:   Thomas Gleixner <tglx@linutronix.de>
To:     Tom Lendacky <thomas.lendacky@amd.com>
cc:     Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org,
        andrew.cooper3@citrix.com, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@suse.de>,
        David Woodhouse <dwmw@amazon.co.uk>,
        Kees Cook <keescook@chromium.org>,
        KarimAllah Ahmed <karahmed@amazon.de>
Subject: Re: [PATCH v1 3/3] x86/bugs: Switch the selection of mitigation from
 CPU vendor to CPU features
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References: <20180601145921.9500-1-konrad.wilk@oracle.com> <20180601145921.9500-4-konrad.wilk@oracle.com> <2a3e0323-7086-f764-1a3b-7ce4891e8784@amd.com> <20180611140116.GA26199@char.us.oracle.com> <5090fe69-61fd-99cb-f9d0-908cd6250d25@amd.com>
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On Tue, 12 Jun 2018, Tom Lendacky wrote:
> On 6/11/2018 9:01 AM, Konrad Rzeszutek Wilk wrote:
> >> I think you will have to keep the case statements and explicitly check for
> >> X86_FEATURE_AMD_SSBD before using SPEC_CTRL.
> > 
> > .. we could or alternatively add an extra check for X86_FEATURE_AMD_SSBD ?
> 
> Whichever you feel is best, so long as we only use SPEC_CTRL for SSBD on
> AMD when X86_FEATURE_AMD_SSBD is present.

Is there anyone working on a fix or has this been forgotten?

Thanks,

	tglx