From: Ingo Molnar <mingo@elte.hu>
To: Borislav Petkov <bp@amd64.org>
Cc: Borislav Petkov <bp@alien8.de>, Andi Kleen <andi@firstfloor.org>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH 1/3] x86, intel: Output microcode revision
Date: Wed, 25 May 2011 13:30:17 +0200 [thread overview]
Message-ID: <20110525113017.GE30983@elte.hu> (raw)
In-Reply-To: <20110525105057.GA21830@gere.osrc.amd.com>
* Borislav Petkov <bp@amd64.org> wrote:
> > Sure we have /sys/devices/system/cpu/cpuN/microcode/version, but
> > that's both privileged to get
>
> Not only that but you have to load the ucode driver to be able to
> read it. /proc/cpuinfo looks like the easiest and most generic
> place.
Indeed, that's a good point - i sometimes boot kernels without the
microcode driver built in, so then no microcode gets loaded. If i
report a weird bug then whoever looks at my bug report might notice
the ancient ucode version number in /proc/cpuinfo.
Thanks,
Ingo
next prev parent reply other threads:[~2011-05-25 11:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-24 23:03 [PATCH 1/3] x86, intel: Output microcode revision Andi Kleen
2011-05-24 23:03 ` [PATCH 2/3] x86, intel: Use cpu_update for Atom errata check Andi Kleen
2011-05-25 6:59 ` Ingo Molnar
2011-05-24 23:03 ` [PATCH 3/3] coretemp: Get microcode revision from cpu_data Andi Kleen
2011-05-24 23:58 ` Yu, Fenghua
2011-05-25 0:39 ` [PATCH 1/3] x86, intel: Output microcode revision Fenghua Yu
[not found] ` <BANLkTikoa494-bRWtbbXuE6eqLuH0ZPUTg@mail.gmail.com>
[not found] ` <493994B35A117E4F832F97C4719C4C04011E214EC2@orsmsx505.amr.corp.intel.com>
2011-05-25 0:47 ` Andi Kleen
2011-05-25 6:54 ` Ingo Molnar
2011-05-25 8:00 ` Borislav Petkov
2011-05-25 9:05 ` Ingo Molnar
2011-05-25 10:50 ` Borislav Petkov
2011-05-25 11:28 ` Ingo Molnar
2011-05-25 21:08 ` Borislav Petkov
2011-05-25 11:30 ` Ingo Molnar [this message]
2011-05-25 16:54 ` Andi Kleen
2011-05-25 18:59 ` Ingo Molnar
2011-05-25 19:13 ` Andi Kleen
2011-05-25 7:06 ` Ingo Molnar
2011-05-25 16:06 ` Henrique de Moraes Holschuh
2011-05-25 16:58 ` Andi Kleen
2011-05-25 18:24 ` Ingo Molnar
2011-05-25 19:04 ` Henrique de Moraes Holschuh
2011-05-25 19:36 ` Ingo Molnar
2011-05-25 19:05 ` Andi Kleen
2011-05-25 19:45 ` Ingo Molnar
2011-05-29 10:21 ` Jan Ceuleers
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