On 11/2/22 11:19, Borislav Petkov wrote:
On Wed, Nov 02, 2022 at 09:55:06AM -0500, Eric DeVolder wrote:
"But on a plain simple laptop or workstation which has CPU hotplug,
would it make sense for the crash ranges to get updated too when CPUs
are offlined?
Yes, it does.
Why?
Technically the answer is no; cpu hotplug events are independent of memory hotplug events, but both
are written into the elfcorehdr, so in reality yes... The elfcorehdr contains a single list of Phdrs
describing CPUs and crash memory ranges; the entire list is re-written on a hotplug change.
Eric
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