Messages in this thread | | | Date | Thu, 23 May 2013 15:45:32 +0800 | Subject | Re: microcode loading got really slow. | From | Ming Lei <> |
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On Thu, May 23, 2013 at 11:39 AM, Dave Jones <davej@redhat.com> wrote: > > 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@aivazian.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.
udevd has the ugly problem previously at some situations(for example, request_firmware called in probe(), and that is why direct loading is introduced), but not sure why the direct loading is failed first.
Could you enable 'CONFIG_DEBUG_DRIVER' and post 'dmesg' out? And better to check where the affected firmware(microcode) is in your distribution.
> > 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.
If the option isn't set, the firmware will be lost for the requested CPU, :-)
Thanks, -- Ming Lei
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