Re: [PATCH v2 0/6] efi: mm/memory-failure: keep hardware-poisoned pages out of the next kexec

[Kiryl Shutsemau]

On Fri, Aug 21, 2026 at 03:06:00AM -0700, Breno Leitao wrote:
> The allocation is capped at 1MB, which covers 16TB at 2MB per bit. Past
> that the stub doubles the unit rather than growing the table, so the
> table stays bounded on any machine.

For unaccepted memory I didn't capped it. On x86, architectural maximum
is 4PB which would cost 256MB in the bitmap. It should be okay for the
scale.

> Memory hot-added after boot is not covered either: the bitmap spans the
> RAM the EFI memory map describes, and a frame outside it is silently not
> recorded.

We might update it if/when it gets solved for unaccepted memory.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov