linux-kernel - Re: [PATCH 1/3] x86, intel: Output microcode revision

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: <20110525190523.GA14151@tassilo.jf.intel.com>
Date:	Wed, 25 May 2011 12:05:23 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Henrique de Moraes Holschuh <hmh@....eng.br>,
	Andi Kleen <andi@...stfloor.org>, x86@...nel.org,
	linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH 1/3] x86, intel: Output microcode revision


I hadn't really expected this simple patchkit to generate
that much email :-) 

> Many years ago i had an old P3 system where i mixed steppings and it 
> was not stable, it would crash after i have put some load on the 
> system.

Ok.

But it's not clear to me how to reliably do it for the microcode
at boot.  Because a future microcode update could fix it up, but the kernel
can't know if there will be a microcode update or not.
So I don't think it can be done at boot at least.

If you want me to rewrite the microcode update driver or something
like that that's outside the scope of my patchkit, sorry.

-Andi
--
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/