Re: 2.6.19 Microcode Update causes a ten second wait

On Mon, 2006-11-06 at 21:33 +0000, Andrew Benton wrote:
Hello World
With the 2.6.19 kernels I've tried (2.6.19-rc1-git7 and
2.6.19-rc4-git10), enabling the Intel Microcode Update Driver causes the
kernel to hang for more than ten seconds when I boot. The last thing it
shows on the screen is `TCP reno registered' and then it just stops like
its a kernel panic. But it isn't, after about ten seconds the text flies
up the screen again and the system boots normally. Disabling support for
the microcode update makes the problem go away.

you're lucky, for me it hangs forever until I add this patch:

--- linux-2.6.18/arch/i386/kernel/microcode.c.org 2006-11-06 14:50:37.000000000 +0100
+++ linux-2.6.18/arch/i386/kernel/microcode.c 2006-11-06 14:52:30.000000000 +0100
@@ -577,7 +577,7 @@ static void microcode_init_cpu(int cpu)
set_cpus_allowed(current, cpumask_of_cpu(cpu));
mutex_lock(&microcode_mutex);
collect_cpu_info(cpu);
- if (uci->valid)
+ if (uci->valid && system_state==SYSTEM_RUNNING)
cpu_request_microcode(cpu);
mutex_unlock(&microcode_mutex);
set_cpus_allowed(current, old);


--
if you want to mail me at work (you don't), use arjan (at) linux.intel.com
Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org

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