linux-kernel - Re: [PATCH] cpu/bugs: Disable CPU mitigations at compilation time

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Message-ID: <877cs87fsm.ffs@tglx>
Date:   Mon, 12 Jun 2023 19:26:33 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Breno Leitao <leitao@...ian.org>, Borislav Petkov <bp@...en8.de>,
        pawan.kumar.gupta@...ux.intel.com
Cc:     pawan.kumar.gupta@...ux.intel.com, paul@...l-moore.com,
        leit@...a.com, x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpu/bugs: Disable CPU mitigations at compilation time

On Mon, Jun 12 2023 at 09:37, Breno Leitao wrote:
> On Mon, Jun 12, 2023 at 06:08:07PM +0200, Borislav Petkov wrote:
>> On Mon, Jun 12, 2023 at 07:16:18AM -0700, Breno Leitao wrote:
>> > Sorry, to waht menu specifically?
>> 
>> CONFIG_SPECULATION_MITIGATIONS
>> 
>> It even has the proper text in there, warning people.
>> 
>> menuconfig SPECULATION_MITIGATIONS
>>         bool "Mitigations for speculative execution vulnerabilities"
>>         default y
>>         help
>>           Say Y here to enable options which enable mitigations for
>>           speculative execution hardware vulnerabilities.
>
> I am not sure if these bugs (MDS, TAA) are speculations related. Pawan
> could help us here.

 https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/index.html

might answer your question.