linux-kernel - Re: [PATCH 0/3] CXL updates for v6.19

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Message-ID: <f0285498-810f-44aa-8577-e28641e97d56@intel.com>
Date: Thu, 13 Nov 2025 08:20:59 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Robert Richter <rrichter@....com>
Cc: Alison Schofield <alison.schofield@...el.com>,
 Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny <ira.weiny@...el.com>,
 Dan Williams <dan.j.williams@...el.com>,
 Jonathan Cameron <jonathan.cameron@...wei.com>,
 Davidlohr Bueso <dave@...olabs.net>, linux-cxl@...r.kernel.org,
 linux-kernel@...r.kernel.org, Gregory Price <gourry@...rry.net>,
 "Fabio M. De Francesco" <fabio.m.de.francesco@...ux.intel.com>,
 Terry Bowman <terry.bowman@....com>, Joshua Hahn <joshua.hahnjy@...il.com>
Subject: Re: [PATCH 0/3] CXL updates for v6.19

On 11/13/25 4:01 AM, Robert Richter wrote:
> On 12.11.25 14:45:28, Dave Jiang wrote:
>>
>>
>> On 11/12/25 1:51 PM, Robert Richter wrote:
>>> Sending optional and rather independent patches from v5 of the CXL
>>> address translation series [1] separately in this series. The patches
>>> could be applied together with early pick up candidates from the
>>> address translation series (namely patch #1 to #4 or #5).
>>>
>>> [1] https://patchwork.kernel.org/project/cxl/cover/20251112203143.1269944-1-rrichter@amd.com/
>>>
>>> Robert Richter (3):
>>>   cxl: Simplify cxl_rd_ops allocation and handling
>>>   cxl/acpi: Group xor arithmetric setup code in a single block
>>>   cxl/region: Remove local variable @inc in cxl_port_setup_targets()
>>>
>>>  drivers/cxl/acpi.c        | 15 ++++-----------
>>>  drivers/cxl/core/region.c | 25 +++++++------------------
>>>  drivers/cxl/cxl.h         |  2 +-
>>>  3 files changed, 12 insertions(+), 30 deletions(-)
>>>
>>
>> Hi Robert, I'm having issues applying to 6.18-rc4.
>>
>> Applying: cxl: Simplify cxl_rd_ops allocation and handling
>> Patch failed at 0001 cxl: Simplify cxl_rd_ops allocation and handling
>> error: patch failed: drivers/cxl/core/region.c:2958
>> error: drivers/cxl/core/region.c: patch does not apply
> 
> You need to apply it on cxl/next. There are conflicts otherwise.

Hi Robert,
I actually need a series that cleanly applies to 6.18-rc4. I'll attempt to resolve the conflicts when I merge that branch to cxl/next. Of course a resolved public branch somewhere as guidance would be appreciated as well. Patches should not be based on cxl/next. Otherwise it gets really messy when I have to drop some changes due to issues.

> 
> Additionally, patch 3/3 (@inc variable change) of this series also
> depends on patch 02/11 of v5 (store root decoder in in struct
> cxl_region). If you chose to pickup some patches from v5 first on top
> of cxl/next, then all this 3 patches should apply cleanly.
> 
> Since 02/11 is one of the first patches and it sounded to me some of
> them will be applied as well, I would prefer that order to avoid
> rebasing and resubmitting a v6 for that. Let me know if you want to
> handle this differently.

Hmmm....maybe I should just take the entire series hopefully next cycle when it's ready given all the dependencies?