[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 11 Nov 2009 08:51:07 +0100
From: Clemens Ladisch <clemens@...isch.de>
To: Dmitry Adamushko <dmitry.adamushko@...il.com>
CC: Andreas Herrmann <herrmann.der.user@...glemail.com>,
Ingo Molnar <mingo@...e.hu>,
Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] x86, ucode-amd: Load ucode-patches once and not separately
fo each CPU
Dmitry Adamushko wrote:
> btw., if we could safely assume that all the cpus after the ucode
> upgrade share the same version/patch-level of ucode, we would be able
> to cache a single ucode instance once and use it for all. I don't
> recall anyone clearly stating that such multi-cpu-type systems can't
> really exist.
>
> e.g. is it possible to have AMD systems with cpus which differ from
> each other not only by their revisions (patch_level)?
The Revision Guide for AMD Family 10h Processors (#41322) says, in
section "Mixed Silicon Support", that the Opteron B steppings can be
used with each other (DR-BA, DR-B2, DR-B3; CPUID 00100F2xh). Are
different steppings considered equivalent?
Clemens
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists