From: Srirangan Madhavan <smadhavan@nvidia.com>
To: "Cheatham, Benjamin" <benjamin.cheatham@amd.com>,
Alison Schofield <alison.schofield@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Dave Jiang <dave.jiang@intel.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Ira Weiny <ira.weiny@intel.com>,
Jonathan Cameron <jic23@kernel.org>,
Vishal Verma <vishal.l.verma@intel.com>,
linux-cxl@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Alex Williamson <alex.williamson@redhat.com>,
vsethi@nvidia.com, alwilliamson@nvidia.com,
Sai Yashwanth Reddy Kancherla <skancherla@nvidia.com>,
Vishal Aslot <vaslot@nvidia.com>,
Manish Honap <mhonap@nvidia.com>, Jiandi An <jan@nvidia.com>,
Richard Cheng <icheng@nvidia.com>,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH v13 06/15] cxl: Make HDM reset helpers available to built-in PCI code
Date: Thu, 1 Oct 2026 15:46:34 -0700 [thread overview]
Message-ID: <6148cc3a-edff-4693-89d1-92331cd7e78d@nvidia.com> (raw)
In-Reply-To: <6dc03976-faa8-49cb-9b74-680e957f2f9e@amd.com>
On 9/23/26 2:40 PM, Cheatham, Benjamin wrote:
>> PCI can be built in while CXL_BUS is modular, so PCI reset code cannot
>> depend on helpers provided by the cxl_core module.
>>
>> Build the HDM resource helpers under CONFIG_CXL_RESET and restrict their
>> exports to cxl_core.
>>
> I think you should squash this patch into 3/15. Having this earlier does two things:
> 1) it makes it more clear why you're moving everything earlier in the set, and 2)
> bisects across the pass 3 patches will all result in the same configuration.
>
> An alternative option would be to refactor the preceding 3 patches in-place and then
> move all of the helpers to this file in this patch, either would work.
I took your alternative in v14: patches 3–5 keep the helpers in hdm.c
while refactoring them, and patch 6 moves them to resource.c together
with the CONFIG_CXL_RESET build change. Also eliminated intermediate
add/remove of resource.o from cxl_core-y.
--
Regards,
Srirangan
next prev parent reply other threads:[~2026-10-01 22:46 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 8:39 [PATCH v13 00/15] PCI/CXL: Add CXL reset support for Type 2 devices Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 01/15] cxl: Drop stale decoder interleave limit comment Srirangan Madhavan
2026-09-24 1:16 ` Jonathan Cameron
2026-09-24 16:23 ` Dave Jiang
2026-09-22 8:39 ` [PATCH v13 02/15] cxl: Share CXL port upstream PCI device lookup Srirangan Madhavan
2026-09-23 21:39 ` Cheatham, Benjamin
2026-09-24 1:21 ` Jonathan Cameron
2026-09-24 16:55 ` Dave Jiang
2026-10-01 22:33 ` Srirangan Madhavan
2026-09-24 1:22 ` Jonathan Cameron
2026-10-01 22:28 ` Srirangan Madhavan
2026-09-24 17:01 ` Dave Jiang
2026-09-22 8:39 ` [PATCH v13 03/15] cxl: Move HDM decoder programming helpers Srirangan Madhavan
2026-09-24 1:29 ` Jonathan Cameron
2026-10-01 23:40 ` Srirangan Madhavan
2026-09-24 17:02 ` Dave Jiang
2026-09-22 8:39 ` [PATCH v13 04/15] cxl: Move decoder declarations to shared header Srirangan Madhavan
2026-09-24 1:31 ` Jonathan Cameron
2026-09-24 17:03 ` Dave Jiang
2026-09-22 8:39 ` [PATCH v13 05/15] cxl: Introduce reusable HDM decoder settings Srirangan Madhavan
2026-09-23 21:39 ` Cheatham, Benjamin
2026-09-24 1:35 ` Jonathan Cameron
2026-10-01 22:43 ` Srirangan Madhavan
2026-09-24 2:45 ` Jonathan Cameron
2026-10-01 23:42 ` Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 06/15] cxl: Make HDM reset helpers available to built-in PCI code Srirangan Madhavan
2026-09-23 21:40 ` Cheatham, Benjamin
2026-09-24 2:49 ` Jonathan Cameron
2026-10-01 22:46 ` Srirangan Madhavan [this message]
2026-09-22 8:39 ` [PATCH v13 07/15] cxl: Share HDM decoder register unpacking Srirangan Madhavan
2026-09-24 3:05 ` Jonathan Cameron
2026-10-01 23:52 ` Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 08/15] cxl: Refresh cached PCI HDM decoder settings Srirangan Madhavan
2026-09-23 21:40 ` Cheatham, Benjamin
2026-10-01 22:58 ` Srirangan Madhavan
2026-09-24 3:08 ` Jonathan Cameron
2026-09-22 8:39 ` [PATCH v13 09/15] cxl: Cache endpoint HDM state during PCI enumeration Srirangan Madhavan
2026-09-23 21:40 ` Cheatham, Benjamin
2026-10-01 23:14 ` Srirangan Madhavan
2026-09-24 3:36 ` Jonathan Cameron
2026-10-01 23:55 ` Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 10/15] cxl: Add CXL Device Reset sequencing Srirangan Madhavan
2026-09-23 21:40 ` Cheatham, Benjamin
2026-09-24 17:29 ` Dave Jiang
2026-10-01 23:36 ` Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 11/15] cxl: Validate and synchronize HDM ranges around reset Srirangan Madhavan
2026-09-23 21:40 ` Cheatham, Benjamin
2026-10-01 23:25 ` Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 12/15] PCI/CXL: Reject reset with unsafe function scope Srirangan Madhavan
2026-09-23 21:41 ` Cheatham, Benjamin
2026-09-24 17:33 ` Dave Jiang
2026-09-22 8:39 ` [PATCH v13 13/15] cxl: Restore CXL state after PCI reset Srirangan Madhavan
2026-09-24 3:50 ` Jonathan Cameron
2026-10-01 23:58 ` Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 14/15] PCI/CXL: Expose CXL Reset as a PCI reset method Srirangan Madhavan
2026-09-22 8:39 ` [PATCH v13 15/15] PCI/CXL: Restore CXL state after CXL bus reset Srirangan Madhavan
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