From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Borislav Petkov <bp@alien8.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Tavis Ormandy <taviso@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Alexander Monakov <amonakov@ispras.ru>
Subject: Re: [PATCH] x86/amd: Work around Erratum 1386 - XSAVES malfunction on context switch
Date: Tue, 7 Mar 2023 18:22:01 +0000 [thread overview]
Message-ID: <940596cc-a440-181a-a72a-36282a26dd0a@citrix.com> (raw)
In-Reply-To: <20230307175050.GCZAd5eu0/Mk2fdLz5@fat_crate.local>
On 07/03/2023 5:50 pm, Borislav Petkov wrote:
> On Tue, Mar 07, 2023 at 05:46:43PM +0000, Andrew Cooper wrote:
>> + * Work around Erratum 1386. The XSAVES instruction malfunctions in
>> + * certain circumstances on Zen1/2 uarch, and not all parts have had
>> + * updated microcode at the time of writing (March 2023).
> Any reason for rushing this and not waiting for me to clarify affected
> models first?
Well yes - more and more reports of impacted systems.
Having the full list of affected models is great and all, but how is it
going to change this patch as a workaround ?
~Andrew
next prev parent reply other threads:[~2023-03-07 18:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-22 6:40 x86: AMD Zen2 ymm registers rolling back Tavis Ormandy
2023-02-22 8:33 ` Borislav Petkov
2023-02-22 9:14 ` Borislav Petkov
2023-02-22 9:38 ` Andrew Cooper
2023-02-22 10:09 ` Borislav Petkov
2023-02-22 21:26 ` Tavis Ormandy
2023-02-22 22:17 ` Andrew Cooper
2023-02-22 22:26 ` Borislav Petkov
2023-02-22 22:25 ` Borislav Petkov
2023-02-28 18:47 ` Alexander Monakov
2023-02-28 19:20 ` Borislav Petkov
2023-02-28 19:24 ` Alexander Monakov
2023-02-28 19:25 ` Borislav Petkov
2023-02-28 19:29 ` Alexander Monakov
2023-02-28 19:38 ` Andrew Cooper
2023-02-28 21:45 ` Alexander Monakov
2023-02-28 20:56 ` Borislav Petkov
2023-02-28 21:16 ` Alexander Monakov
2023-03-01 0:23 ` Andrew Cooper
2023-03-01 8:54 ` Borislav Petkov
2023-03-07 16:45 ` Tavis Ormandy
2023-03-07 17:46 ` [PATCH] x86/amd: Work around Erratum 1386 - XSAVES malfunction on context switch Andrew Cooper
2023-03-07 17:50 ` Borislav Petkov
2023-03-07 18:22 ` Andrew Cooper [this message]
2023-03-07 18:56 ` Borislav Petkov
2023-03-07 20:01 ` Andrew Cooper
2023-03-07 20:09 ` Borislav Petkov
2023-03-14 16:01 ` Dave Hansen
2023-03-08 16:23 ` [tip: x86/urgent] x86/CPU/AMD: Disable XSAVES on AMD family 0x17 tip-bot2 for Andrew Cooper
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