lkml.org 
[lkml]   [2017]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] x86/mce: Keep quiet in case of broadcasted mce after system panic
From
Date
On 01/24/2017 at 02:14 AM, Borislav Petkov wrote:
> On Mon, Jan 23, 2017 at 10:01:53AM -0800, Luck, Tony wrote:
>> will ignore the machine check on the other cpus ... assuming
>> that "cpu_is_offline(smp_processor_id())" does the right thing
>> in the kexec case where this is an "old" cpu that isn't online
>> in the new kernel.
> Nice. And kdump did do the dumping on one CPU, AFAIR. So we should be
> good there.
>

"nr_cpus=N" will consume more memory, using very large N is almost
impossible for kdump to boot with considering the limited crash memory
reserved.

For some large machine, nr_cpus=1 might not be enough, we have to use
nr_cpus=4 or more, it is also helpful for the vmcore parallel dumping :-)

Regards,
Xunlei

\
 
 \ /
  Last update: 2017-01-24 03:32    [W:0.045 / U:0.904 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site