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Date:   Mon, 5 Dec 2022 16:05:17 -0600
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To:     Borislav Petkov <bp@alien8.de>
Cc:     x86@kernel.org, Babu Moger <Babu.Moger@amd.com>,
        Borislav Petkov <bp@suse.de>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        Joao Martins <joao.m.martins@oracle.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Sean Christopherson <seanjc@google.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        David Woodhouse <dwmw@amazon.co.uk>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Juergen Gross <jgross@suse.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Tony Luck <tony.luck@intel.com>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        Alexey Kardashevskiy <aik@amd.com>, kvm@vger.kernel.org,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20221201015003.295769-1-kim.phillips@amd.com>
 <20221201015003.295769-2-kim.phillips@amd.com> <Y43GpD9fgnOGNEcu@zn.tnic>
 <53393726-5a8a-1a13-c620-32c65872278c@amd.com> <Y45SkWalmZJ/zB1j@zn.tnic>
From:   Kim Phillips <kim.phillips@amd.com>
Subject: Re: [PATCH v4 1/7] x86/cpu: Define a scattered No Nested Data
 Breakpoints feature bit
In-Reply-To: <Y45SkWalmZJ/zB1j@zn.tnic>
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On 12/5/22 2:20 PM, Borislav Petkov wrote:
> On Mon, Dec 05, 2022 at 11:32:01AM -0600, Kim Phillips wrote:
>> This is starting to get off-topic.
> 
> What does that mean?
> 
> Are you saying I'm not allowed to ask why stuff is added?

No, sorry.  You had asked "what is the use of this bit in
a KVM guest?", and I'm saying that it was already being
propagated to the guest prior to this patchseries, which
is about propagating the Automatic IBRS feature.  That's
all.

Thanks,

Kim