RE: [patch 11/14] ACPI: change GFP_ATOMIC to GFP_KERNEL for non-atomic allocation

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>-----Original Message-----
>From: Jiri Kosina [mailto:jikos@xxxxxxxx] 
>Sent: Friday, August 25, 2006 7:27 AM
>To: Len Brown; Pallipadi, Venkatesh
>Cc: linux-acpi@xxxxxxxxxxxxxxx
>Subject: Re: [patch 11/14] ACPI: change GFP_ATOMIC to 
>GFP_KERNEL for non-atomic allocation
>
>On Fri, 25 Aug 2006, Jiri Kosina wrote:
>
>> > to address this on boot, Linux uses system-state. I 
>suggested doing the
>> > same for resume, but Andrew didn't like it, so here we are 
>chasing a
>> > bunch of spurious warning messages. Got any random 
>examples that are
>> > still valid in greg's tree, my tree, or the latest mm?
>> Actually I just pulled from the acpi git tree, and with this 
>kernel my IBM 
>> T42p hangs approximately 10s after the kernel is started 
>(hard lockup, no 
>> caps/numlock). Will investigate.
>
>Bisection shows that it is caused by commit 
>f62d31ee2f2f453b07107465fea54540cab418eb ACPI: Support 
>Processor Native 
>C-state using Intel "mwait" instruction. 
>
>I guess that the detection whether current CPU supports mwait 
>insn does 
>not work, but I am not too familiar with this.
>
>cpuinfo:
>
>processor	: 0
>vendor_id	: GenuineIntel
>cpu family	: 6
>model		: 13
>model name	: Intel(R) Pentium(R) M processor 1.80GHz
>stepping	: 6
>cpu MHz		: 1800.000
>cache size	: 2048 KB
>fdiv_bug	: no
>hlt_bug		: no
>f00f_bug	: no
>coma_bug	: no
>fpu		: yes
>fpu_exception	: yes
>cpuid level	: 2
>wp		: yes
>flags		: fpu vme de pse tsc msr mce cx8 sep mtrr pge 
>mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe est tm2
>bogomips	: 3590.77
>

I don't seem to be able to reproduce this on my T40 laptop. 

Can you please send me the following:
1) Output of acpidump (from latest pmtools here:
http://www.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/ )
2) dmesg and cat /proc/acpi/processor/*/* output without this patch.

Thanks,
Venki
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