linux-kernel - Re: microcode loading got really slow.

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Message-ID: <20130523033911.GA9411@redhat.com>
Date:	Wed, 22 May 2013 23:39:11 -0400
From:	Dave Jones <davej@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>, x86@...nel.org,
	fenghua.yu@...el.com, Takashi Iwai <tiwai@...e.de>
Subject: Re: microcode loading got really slow.

 > On 05/21/2013 04:03 PM, Dave Jones wrote:
 > 
 > [   72.318133] microcode: CPU1 sig=0x306c3, pf=0x2, revision=0x6
 > [  132.446449] microcode: CPU2 sig=0x306c3, pf=0x2, revision=0x6
 > [  192.573101] microcode: CPU3 sig=0x306c3, pf=0x2, revision=0x6
 > [  252.702055] microcode: Microcode Update Driver: v2.00 <tigran@...azian.fsnet.co.uk>, Peter Oruba
 > 
 > For some reason the events for udev seem to be getting delayed 60s
 > for each core.

Screwed up my .config, and had CONFIG_FW_LOADER_USER_HELPER inadvertantly set
Odd though that it causes that 60 second delay, given that it's supposedly a
'fallback' when the direct loading fails.

It seems I don't actually need to set that option, so I'm not bothered
if there's an actual bug here or not, but the behaviour seems odd.

	Dave

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