From: Tom Lendacky <thomas.lendacky@amd.com>
To: David Woodhouse <dwmw2@infradead.org>,
Greg KH <gregkh@linux-foundation.org>
Cc: arjan@linux.intel.com, tglx@linutronix.de, karahmed@amazon.de,
x86@kernel.org, linux-kernel@vger.kernel.org,
tim.c.chen@linux.intel.com, bp@alien8.de, peterz@infradead.org,
pbonzini@redhat.com, ak@linux.intel.com,
torvalds@linux-foundation.org, dave.hansen@intel.com,
gnomes@lxorguk.ukuu.org.uk
Subject: Re: [PATCH v3 3/6] x86/cpufeatures: Add AMD feature bits for Speculation Control
Date: Tue, 20 Feb 2018 09:22:08 -0600 [thread overview]
Message-ID: <df8c19da-50ae-e608-6961-ac56939a4248@amd.com> (raw)
In-Reply-To: <ea50b592-7664-ffd6-8e9d-e26a4ebb7257@amd.com>
On 1/24/2018 4:52 PM, Tom Lendacky wrote:
> On 1/24/2018 11:57 AM, David Woodhouse wrote:
>> On Wed, 2018-01-24 at 18:20 +0100, Greg KH wrote:
>>> On Wed, Jan 24, 2018 at 04:57:02PM +0000, David Woodhouse wrote:
>>>>
>>>> AMD exposes the PRED_CMD/SPEC_CTRL MSRs slightly differently to Intel.
>>>> See http://lkml.kernel.org/r/2b3e25cc-286d-8bd0-aeaf-9ac4aae39de8@amd.com
>>> Oh how fun :(
>>
>> At least they *work* the same :)
>>
>> Although I still haven't seen that doc, Tom...
>
> Working on it...
The CPUID/MSR information is published:
https://developer.amd.com/wp-content/resources/Architecture_Guidelines_Update_Indirect_Branch_Control.pdf
Thanks,
Tom
>
> Thanks,
> Tom
>
>>
next prev parent reply other threads:[~2018-02-20 15:22 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-24 16:56 [PATCH v3 0/6] Basic Speculation Control feature support David Woodhouse
2018-01-24 16:57 ` [PATCH v3 1/6] x86/cpufeatures: Add CPUID_7_EDX CPUID leaf David Woodhouse
2018-01-24 17:18 ` Greg KH
2018-01-24 16:57 ` [PATCH v3 2/6] x86/cpufeatures: Add Intel feature bits for Speculation Control David Woodhouse
2018-01-24 17:18 ` Greg KH
2018-01-24 16:57 ` [PATCH v3 3/6] x86/cpufeatures: Add AMD " David Woodhouse
2018-01-24 17:20 ` Greg KH
2018-01-24 17:57 ` David Woodhouse
2018-01-24 22:52 ` Tom Lendacky
2018-02-20 15:22 ` Tom Lendacky [this message]
2018-01-24 16:57 ` [PATCH v3 4/6] x86/msr: Add definitions for new speculation control MSRs David Woodhouse
2018-01-24 17:16 ` Greg KH
2018-01-24 16:57 ` [PATCH v3 5/6] x86/pti: Do not enable PTI on processors which are not vulnerable to Meltdown David Woodhouse
2018-01-24 17:26 ` Greg KH
2018-01-26 12:14 ` Yves-Alexis Perez
2018-01-26 12:27 ` David Woodhouse
2018-01-26 15:27 ` Dave Hansen
2018-01-26 15:30 ` Arjan van de Ven
2018-01-26 16:47 ` Alan Cox
2018-01-24 16:57 ` [PATCH v3 6/6] x86/cpufeature: Blacklist SPEC_CTRL on early Spectre v2 microcodes David Woodhouse
2018-01-24 17:29 ` Greg KH
2018-01-24 17:58 ` David Woodhouse
2018-01-24 21:29 ` Ingo Molnar
2018-01-26 12:16 ` Yves-Alexis Perez
2018-01-26 12:27 ` David Woodhouse
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