kdump: Fix for boot problems on SMP]
PATCH 1/1 kdump: Fix for boot problems on SMP]
My following original message didn't make it the mailing list hence i am resending it.
-------- Original Message --------
Subject: Re: [PATCH] kdump: Fix for boot problems on SMP
Date: Fri, 19 Nov 2004 22:27:06 -0800
From: Vara Prasad <[email protected]>
To: [email protected]
CC: Andrew Morton <[email protected]>, Akinobu Mita <[email protected]>, [email protected], Linux Kernel Mailing List <[email protected]>, prasadav <[email protected]>
[email protected] wrote on 11/19/2004 03:29:04 PM:
Quoted 8 lines
Hi Andrew,
I haven't tested it yet on any of my machines (due to the hang). I am about to give it a try. But my understanding (please update me if I am wrong) is,
1)
DISCONTIG_MEMsupport is not working yet - so i can't use any of my NUMA boxes.
The initial patch submitted to Andrew didn't include the NUMA support hence it is not expected to work on NUMA. We are testing the DISCONTIG_MEM patch, we will submit after finishing the testing.
Quoted 4 lines
2) AMD64 is not supported - i can't use my Opteron machine.
3) ppc is not supported - i can't use Power3 and Power4 machines.
First set of patches are only meant to support 32bit x86 platform. Plan is to support Opteron and other platforms after stabilizing the initial patches. We are working on porting to AMD64 and PPC platforms.
Quoted 3 lines
So, I can only try it on non-NUMA i386 smp boxes. I have few of those to try. I will give an update next week on my testing.
You can try on i386 UP and SMP boxes. Thanks for your help in testing these patches.
Quoted 24 lines
Thanks,
BadariQuoted 17 lines · Andrew Morton
Quoted 8 lines · Akinobu Mita
Quoted 3 lines · Hariprasad Nellitheertha
There was a buggy (and unnecessary)
reserve_bootmemcall in the kdump call which was causing hangs during early on some SMP machines. The attached patch removes that.Thanks! I also had the same problem.
So.. How is the crashdump code working now? I haven't heard from anyone who is using it and I haven't gotten onto testing it myself.
Do we have any feeling for its success rate on various machines, and on its ease of use?
bye,
Vara Prasad
IBM Linux Technology Center
Phone: 503-578-3303
Tie Line: 775-3303
email: [email protected]
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