[PATCH 1/2] kexec: add a dummy note for each offline cpu
Liu ping fan
kernelfans at gmail.com
Wed Dec 14 00:15:29 PST 2016
On Wed, Dec 14, 2016 at 3:40 PM, Baoquan He <bhe at redhat.com> wrote:
> On 12/14/16 at 02:11pm, Pingfan Liu wrote:
>> kexec-tools always allocates program headers for each possible cpu. This
>> incurs zero PT_NOTE for offline cpu. We mark this case so that later,
>> the capture kernel can distinguish it from the mistake of allocated
>> program header.
>> The counterpart of the capture kernel comes in next patch.
> When you execute dmesg on your testing machine and grep nr_cpu_ids,
> what's the value of nr_cpu_ids?
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