linux-kernel - Re: [PATCH v2 00/11] Remove device private pages from physical address space

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Message-ID: <ad2a0fe8-6d00-46a8-8f4c-fd7fb6aac8b1@nvidia.com>
Date: Fri, 9 Jan 2026 12:27:50 +1100
From: Jordan Niethe <jniethe@...dia.com>
To: Matthew Brost <matthew.brost@...el.com>
Cc: linux-mm@...ck.org, balbirs@...dia.com, akpm@...ux-foundation.org,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 david@...hat.com, ziy@...dia.com, apopple@...dia.com,
 lorenzo.stoakes@...cle.com, lyude@...hat.com, dakr@...nel.org,
 airlied@...il.com, simona@...ll.ch, rcampbell@...dia.com,
 mpenttil@...hat.com, jgg@...dia.com, willy@...radead.org,
 linuxppc-dev@...ts.ozlabs.org, intel-xe@...ts.freedesktop.org, jgg@...pe.ca,
 Felix.Kuehling@....com
Subject: Re: [PATCH v2 00/11] Remove device private pages from physical
 address space

Hi
On 9/1/26 11:31, Matthew Brost wrote:
> On Fri, Jan 09, 2026 at 11:01:13AM +1100, Jordan Niethe wrote:
>> Hi,
>>
>> On 8/1/26 16:42, Jordan Niethe wrote:
>>> Hi,
>>>
>>> On 8/1/26 13:25, Jordan Niethe wrote:
>>>> Hi,
>>>>
>>>> On 8/1/26 05:36, Matthew Brost wrote:
>>>>>
>>>>> Thanks for the series. For some reason Intel's CI couldn't apply this
>>>>> series to drm-tip to get results [1]. I'll manually apply this
>>>>> and run all
>>>>> our SVM tests and get back you on results + review the changes here. For
>>>>> future reference if you want to use our CI system, the series must apply
>>>>> to drm-tip, feel free to rebase this series and just send to intel-xe
>>>>> list if you want CI
>>>>
>>>> Thanks, I'll rebase on drm-tip and send to the intel-xe list.
>>>
>>> For reference the rebase on drm-tip on the intel-xe list:
>>>
>>> https://patchwork.freedesktop.org/series/159738/
>>>
>>> Will watch the CI results.
>>
>> The series causes some failures in the intel-xe tests:
>> https://patchwork.freedesktop.org/series/159738/#rev4
>>
>> Working through the failures now.
>>
> 
> Yea, I saw the failures. I haven't had time look at the patches on my
> end quite yet. Scrabling to get a few things in 6.20/7.0 PR, so I may
> not have bandwidth to look in depth until mid next week but digging is
> on my TODO list.

Sure, that's completely fine. The failures seem pretty directly related 
to the
series so I think I'll be able to make good progress.

For example 
https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-159738v4/bat-bmg-2/igt@xe_evict@evict-beng-small.html

It looks like I missed that xe_pagemap_destroy_work() needs to be updated to
remove the call to devm_release_mem_region() now we are no longer 
reserving a mem
region. 
  
  


Thanks,
Jordan.

> 
> Matt
> 
>> Thanks,
>> Jordan.
>>
>>>
>>> Thanks,
>>> Jordan.
>>>
>>>>
>>>> Jordan.
>>>>
>>>>>
>>>>> I was also wondering if Nvidia could help review one our core MM patches
>>>>> [2] which is gating enabling 2M device pages too?
>>>>>
>>>>> Matt
>>>>>
>>>>> [1] https://patchwork.freedesktop.org/series/159738/
>>>>> [2] https://patchwork.freedesktop.org/patch/694775/?series=159119&rev=1
>>>>
>>>>
>>>
>>