linux-kernel - Re: [PATCH v6 0/4] iommu: Add page_ext for IOMMU_DEBUG

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Message-ID: <CAFgf54opD5qveK7njnCgkWeNYWSwiPHTxPBL2ouQYFEAL_kYKQ@mail.gmail.com>
Date: Tue, 13 Jan 2026 11:10:56 +0000
From: Mostafa Saleh <smostafa@...gle.com>
To: Jörg Rödel <joro@...tes.org>
Cc: linux-mm@...ck.org, iommu@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	linux-doc@...r.kernel.org, corbet@....net, will@...nel.org, 
	robin.murphy@....com, akpm@...ux-foundation.org, vbabka@...e.cz, 
	surenb@...gle.com, mhocko@...e.com, jackmanb@...gle.com, hannes@...xchg.org, 
	ziy@...dia.com, david@...hat.com, lorenzo.stoakes@...cle.com, 
	Liam.Howlett@...cle.com, rppt@...nel.org, xiaqinxin@...wei.com, 
	baolu.lu@...ux.intel.com, rdunlap@...radead.org
Subject: Re: [PATCH v6 0/4] iommu: Add page_ext for IOMMU_DEBUG_PAGEALLOC

On Sat, Jan 10, 2026 at 9:53 AM Jörg Rödel <joro@...tes.org> wrote:
>
> On Fri, Jan 09, 2026 at 05:18:01PM +0000, Mostafa Saleh wrote:
> > Mostafa Saleh (4):
> >   iommu: Add page_ext for IOMMU_DEBUG_PAGEALLOC
> >   iommu: Add calls for IOMMU_DEBUG_PAGEALLOC
> >   iommu: debug-pagealloc: Track IOMMU pages
> >   iommu: debug-pagealloc: Check mapped/unmapped kernel memory
> >
> >  .../admin-guide/kernel-parameters.txt         |   9 +
> >  drivers/iommu/Kconfig                         |  19 ++
> >  drivers/iommu/Makefile                        |   1 +
> >  drivers/iommu/iommu-debug-pagealloc.c         | 167 ++++++++++++++++++
> >  drivers/iommu/iommu-priv.h                    |  58 ++++++
> >  drivers/iommu/iommu.c                         |  11 +-
> >  include/linux/iommu-debug-pagealloc.h         |  32 ++++
> >  include/linux/mm.h                            |   5 +
> >  mm/page_ext.c                                 |   4 +
> >  9 files changed, 304 insertions(+), 2 deletions(-)
> >  create mode 100644 drivers/iommu/iommu-debug-pagealloc.c
> >  create mode 100644 include/linux/iommu-debug-pagealloc.h
>
> Applied, thanks.

Thanks a lot! Based on the discussion on patch 3, I might need to
respin a new version.

Thanks,
Mostafa