From: Tavis Ormandy <taviso@gmail.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Alexander Monakov <amonakov@ispras.ru>,
linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: x86: AMD Zen2 ymm registers rolling back
Date: Tue, 7 Mar 2023 08:45:19 -0800 [thread overview]
Message-ID: <ZAdqHwqik9kP5ELs@thinkstation.cmpxchg8b.net> (raw)
In-Reply-To: <Y/8StpL8atNwyzip@zn.tnic>
On Wed, Mar 01, 2023 at 09:54:14AM +0100, Borislav Petkov wrote:
> On Wed, Mar 01, 2023 at 12:23:01AM +0000, Andrew Cooper wrote:
> > So we need a table for all Zen2 parts of ucode revisions below which we
> > force hide XSAVES as the erratum workaround.
>
> Working on it - stay tuned.
>
FYI, I heard from someone offlist that they can reproduce with the
latest microcode available on this cpu:
cpu family : 23
model : 17
model name : AMD Ryzen 3 2200G with Radeon Vega Graphics
stepping : 0
microcode : 0x8101016
It seems likely many zen1 systems are affected without any microcode
patch, which seems not great to me.
I guess it would be nice if AMD could provide a list of devices they're
not going to provide a patch for...
Tavis.
--
_o) $ lynx lock.cmpxchg8b.com
/\\ _o) _o) $ finger taviso@sdf.org
_\_V _( ) _( ) @taviso
next prev parent reply other threads:[~2023-03-07 16:49 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-22 6:40 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 [this message]
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
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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