From: Jonathan Cameron <jonathan.cameron@huawei.com>
To: Robert Richter <rrichter@amd.com>
Cc: Alison Schofield <alison.schofield@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Ira Weiny <ira.weiny@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
"Davidlohr Bueso" <dave@stgolabs.net>,
<linux-cxl@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Gregory Price <gourry@gourry.net>,
"Fabio M. De Francesco" <fabio.m.de.francesco@linux.intel.com>,
Terry Bowman <terry.bowman@amd.com>,
Joshua Hahn <joshua.hahnjy@gmail.com>
Subject: Re: [PATCH v4 11/14] cxl/atl: Lock decoders that need address translation
Date: Tue, 11 Nov 2025 15:31:50 +0000 [thread overview]
Message-ID: <20251111153150.000051cf@huawei.com> (raw)
In-Reply-To: <20251103184804.509762-12-rrichter@amd.com>
On Mon, 3 Nov 2025 19:47:52 +0100
Robert Richter <rrichter@amd.com> wrote:
> There is only support to translate addresses from an endpoint to its
> CXL host bridge, but not in the opposite direction from the bridge to
> the endpoint. Thus, the endpoint address range cannot be determined
> and setup manually for a given SPA range of a region. If the endpoint
> has address translation enabled, lock it to prevent the kernel from
> reconfiguring it.
>
> Reviewed-by: Gregory Price <gourry@gourry.net>
> Signed-off-by: Robert Richter <rrichter@amd.com>
I'm fine with your explanation to Dave so
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
next prev parent reply other threads:[~2025-11-11 15:31 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-03 18:47 [PATCH v4 00/14] cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement Robert Richter
2025-11-03 18:47 ` [PATCH v4 01/14] cxl/region: Store root decoder in struct cxl_region Robert Richter
2025-11-11 14:45 ` Jonathan Cameron
2025-11-14 9:38 ` Robert Richter
2025-11-03 18:47 ` [PATCH v4 02/14] cxl/region: Store HPA range " Robert Richter
2025-11-11 11:25 ` Robert Richter
2025-11-03 18:47 ` [PATCH v4 03/14] cxl/region: Rename misleading variable name @hpa to @hpa_range Robert Richter
2025-11-03 21:36 ` Dave Jiang
2025-11-11 14:41 ` Jonathan Cameron
2025-11-12 16:23 ` Dave Jiang
2025-11-03 18:47 ` [PATCH v4 04/14] cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos() Robert Richter
2025-11-03 21:52 ` Dave Jiang
2025-11-04 3:04 ` Alison Schofield
2025-11-11 11:28 ` Robert Richter
2025-11-04 16:52 ` kernel test robot
2025-11-03 18:47 ` [PATCH v4 05/14] cxl: Simplify cxl_root_ops allocation and handling Robert Richter
2025-11-03 21:53 ` Dave Jiang
2025-11-04 23:02 ` Dave Jiang
2025-11-07 15:45 ` Robert Richter
2025-11-07 15:50 ` Dave Jiang
2025-11-11 14:52 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 06/14] cxl/region: Separate region parameter setup and region construction Robert Richter
2025-11-03 22:05 ` Dave Jiang
2025-11-07 15:59 ` Robert Richter
2025-11-11 14:59 ` Jonathan Cameron
2025-11-11 15:02 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 07/14] cxl/region: Use region data to get the root decoder Robert Richter
2025-11-03 22:30 ` Dave Jiang
2025-11-11 15:14 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 08/14] cxl: Introduce callback for HPA address ranges translation Robert Richter
2025-11-03 23:09 ` Dave Jiang
2025-11-11 15:15 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 09/14] cxl/acpi: Prepare use of EFI runtime services Robert Richter
2025-11-03 23:34 ` Dave Jiang
2025-11-11 15:17 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 10/14] cxl: Enable AMD Zen5 address translation using ACPI PRMT Robert Richter
2025-11-04 1:00 ` Dave Jiang
2025-11-11 9:23 ` Robert Richter
2025-11-04 9:33 ` kernel test robot
2025-11-04 12:49 ` Robert Richter
2025-11-04 23:35 ` kernel test robot
2025-11-11 15:30 ` Jonathan Cameron
2025-11-13 11:24 ` Robert Richter
2025-11-03 18:47 ` [PATCH v4 11/14] cxl/atl: Lock decoders that need address translation Robert Richter
2025-11-04 17:13 ` Dave Jiang
2025-11-11 12:54 ` Robert Richter
2025-11-12 16:34 ` Dave Jiang
2025-11-13 20:05 ` Robert Richter
2025-11-13 20:36 ` Dave Jiang
2025-11-14 7:34 ` Robert Richter
2025-11-14 15:21 ` Dave Jiang
2025-11-11 15:31 ` Jonathan Cameron [this message]
2025-11-03 18:47 ` [PATCH v4 12/14] cxl: Simplify cxl_rd_ops allocation and handling Robert Richter
2025-11-04 17:26 ` Dave Jiang
2025-11-04 23:02 ` Alison Schofield
2025-11-11 12:07 ` Robert Richter
2025-11-11 15:34 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 13/14] cxl/acpi: Group xor arithmetric setup code in a single block Robert Richter
2025-11-11 15:35 ` Jonathan Cameron
2025-11-03 18:47 ` [PATCH v4 14/14] cxl/region: Remove local variable @inc in cxl_port_setup_targets() Robert Richter
2025-11-11 15:36 ` Jonathan Cameron
2025-11-13 20:10 ` Robert Richter
2025-11-04 16:17 ` [PATCH v4 00/14] cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement Alison Schofield
2025-11-17 15:34 ` Robert Richter
2025-11-17 17:23 ` Gregory Price
2025-11-11 14:01 ` Gregory Price
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20251111153150.000051cf@huawei.com \
--to=jonathan.cameron@huawei.com \
--cc=alison.schofield@intel.com \
--cc=dan.j.williams@intel.com \
--cc=dave.jiang@intel.com \
--cc=dave@stgolabs.net \
--cc=fabio.m.de.francesco@linux.intel.com \
--cc=gourry@gourry.net \
--cc=ira.weiny@intel.com \
--cc=joshua.hahnjy@gmail.com \
--cc=linux-cxl@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rrichter@amd.com \
--cc=terry.bowman@amd.com \
--cc=vishal.l.verma@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.