linux-kernel - Re: [PATCH -v2 1/2] x86, microcode: Sanitize per-cpu microcode reloading interface

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Date:	Tue, 03 Jul 2012 11:26:08 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Borislav Petkov <bp@...64.org>
Cc:	X86-ML <x86@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	Henrique de Moraes Holschuh <hmh@....eng.br>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH -v2 1/2] x86, microcode: Sanitize per-cpu microcode
 reloading interface

On Tue, 2012-07-03 at 06:37 +0200, Borislav Petkov wrote:
> In thinking about this a bit more, perf callback is only run from the
> reload_store interface but we don't run it on module init time. 

@@ -557,7 +560,8 @@ static int __init microcode_init(void)
        mutex_lock(&microcode_mutex);

        error = subsys_interface_register(&mc_cpu_interface);
-
+       if (!error)
+               perf_check_microcode();
        mutex_unlock(&microcode_mutex);
        put_online_cpus();


I thought that was init time?
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