Re: [PATCH v8 0/3] x86/boot/KASLR: Parse ACPI table and limit kaslr in immovable memory

Borislav Petkov
2018-11-06T12:10:23Z

On Thu, Oct 25, 2018 at 09:40:51AM -0400, Masayoshi Mizuma wrote:
> My actual use case is for EFI boxes, however, I think it's better to useful
> for legacy BIOS as well because memory hot-plug affinity in SRAT and KASLR
> are available on legacy BIOS.
> Actually, we can create such environment in qemu.

Ah, right, qemu. :)

> I have another idea to solve this issue. Adding a SRAT parsing code
> to arch/x86/mm/kaslr.c. It is useful for both EFI and BIOS and
> also we don't need a new kernel parameter...
> Dose the idea make sense?

The more automatic stuff we do and we don't have to involve the user,
the better.

However, lemme look at Chao's current patchset first - we should not go
nuts by putting SRAT parsing everywhere :)

--
Regards/Gruss,
Boris.

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