[Intel-gfx] [PATCH v3 RESEND] x86/mm: Fix PAT bit missing from page protection modify mask

Borislav Petkov bp at alien8.de
Mon Jul 10 08:05:19 UTC 2023


On Mon, Jul 10, 2023 at 09:36:14AM +0200, Janusz Krzysztofik wrote:
> Assume that adding _PAGE_PAT to _PAGE_CHG_MASK doesn't break pte_modify()
> and its users, and go for it.  Also, add _PAGE_PAT_LARGE to

That's my only worry.

I'd suggest we queue this but not send it to Linus now. Instead, let it
cook in linux-next for the whole 6.5 release cycle so that it can get at
least *some* testing.

Because if we send it now and something else obscure breaks in a weird
way in his tree, then we'll have to scramble to fix that too and it'll
be one helluva mess.

Dave?

-- 
Regards/Gruss,
    Boris.

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