linux-kernel - Re: [RFC PATCH 00/10] x86: Allocate AVX512 xstate ondemand

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <8aa8ed78-5c78-49c2-b100-607a8f4e8eae@www.fastmail.com>
Date:   Fri, 03 Dec 2021 11:55:44 +0000
From:   "Jiaxun Yang" <jiaxun.yang@...goat.com>
To:     "Borislav Petkov" <bp@...en8.de>
Cc:     "Dave Hansen" <dave.hansen@...el.com>, x86@...nel.org,
        "Thomas Gleixner" <tglx@...utronix.de>,
        "Ingo Molnar" <mingo@...hat.com>, dave.hansen@...ux.intel.com,
        hpa@...or.com, chang.seok.bae@...el.com,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 00/10] x86: Allocate AVX512 xstate ondemand



在2021年12月3日十二月 上午11:51，Borislav Petkov写道：
> On Fri, Dec 03, 2021 at 11:42:10AM +0000, Jiaxun Yang wrote:
>> If it's improper I'll drop the statement in commit message :-)
>
> Actually you should answer his question about what happens if you clear
> those two bits in that MSR.

It made AVX512 states available in XCR0. I'm still doing some experiments
to see if AVX512 is actually enabled by this.

Thanks.

>
> -- 
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette

-- 
- Jiaxun