Re: [PATCH v2 1/4] mm: pagewalk: Fix walk for hugepage tables

From: Christophe Leroy
Date: Fri Jun 25 2021 - 00:57:06 EST




Le 25/06/2021 à 06:45, Michael Ellerman a écrit :
Christophe Leroy <christophe.leroy@xxxxxxxxxx> writes:
Hi Michael,

Le 19/04/2021 à 12:47, Christophe Leroy a écrit :
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.

Add walk_hugepd_range() and use it to walk hugepage tables.

I see you took patch 2 and 3 of the series.

Yeah I decided those were bug fixes so could be taken separately.

Do you expect Andrew to take patch 1 via mm tree, and then you'll take
patch 4 once mm tree is merged ?

I didn't feel I could take patch 1 via the powerpc tree without risking
conflicts.

Andrew could take patch 1 and 4 via mm, though he might not want to pick
them up this late.

Patch 4 needs patches 2 and 3 and doesn't apply without them so it is not that easy.

Maybe Andrew you can take patch 1 now and then Michael you can take patch 4 at anytime during 5.15 preparation without any conflict risk ?


I guess step one would be to repost 1 and 4 as a new series. Either they
can go via mm, or for 5.15 I could probably take them both as long as I
pick them up early enough.


I'll first repost patch 1 as standalone and see what happens.

Christophe