[RFC PATCH 0/2] memblock: keep reserve_mem regions out of KHO bootmem

Pratyush Yadav pratyush at kernel.org
Thu Oct 22 06:37:12 PDT 2026


On Wed, Oct 21 2026, Jose A. Perez de Azpillaga wrote:

> On a KHO boot, a reserve_mem= region that can't be revived (new name,
> size or alignment) can be allocated from KHO bootmem, which the next
> kernel boots out of. With CONFIG_KEXEC_HANDOVER_DEBUG preserving it
> fails; without it, the next kernel's memmap ends up on top of it.

What's your use-case? Why are you adding new reserve_mem regions after
cold boot? I'd rather avoid making purely theoretical fixes.

[...]

-- 
Regards,
Pratyush Yadav



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