Re: [PATCH v2] x86/mm: fix kern_addr_valid to cope with existing but not present entries

[Borislav Petkov]

On Wed, Sep 08, 2021 at 12:35:21PM +0200, Borislav Petkov wrote:
> So I did stare at this for a while, trying to make sense of it and David
> Hildenbrand asked for a Fixes: tag in v1 review and from doing a bit of
> git archeology I think it should be:
> 
> c40a56a7818c ("x86/mm/init: Remove freed kernel image areas from alias mapping")
> 
> because that thing added the clearing of the Present bit for the high
> kernel image mapping of those areas.
> 
> Right?

Hmm, but that commit is in v4.19. Mike has added

Cc: <stable@xxxxxxxxxxxxxxx>    # 4.4+

Mike, why 4.4 and newer?

Hmmm.

-- 
Regards/Gruss,
    Boris.

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