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 v7 06/11] cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
Date: Mon, 17 Nov 2025 13:57:20 +0000 [thread overview]
Message-ID: <20251117135720.00006500@huawei.com> (raw)
In-Reply-To: <20251114213931.30754-7-rrichter@amd.com>
On Fri, 14 Nov 2025 22:39:19 +0100
Robert Richter <rrichter@amd.com> wrote:
> cxl_calc_interleave_pos() uses the endpoint decoder's HPA range to
> determine its interleaving position. This requires the endpoint
> decoders to be an SPA, which is not the case for systems that need
> address translation.
>
> Add a separate @hpa_range argument to function
> cxl_calc_interleave_pos() to specify the address range. Now it is
> possible to pass the SPA translated address range of an endpoint
> decoder to function cxl_calc_interleave_pos().
>
> Refactor only, no functional changes.
>
> Patch is a prerequisite to implement address translation.
>
> Reviewed-by: Gregory Price <gourry@gourry.net>
> Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> Tested-by: Gregory Price <gourry@gourry.net>
> Signed-off-by: Robert Richter <rrichter@amd.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
next prev parent reply other threads:[~2025-11-17 13:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-14 21:39 [PATCH v7 00/11] cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement Robert Richter
2025-11-14 21:39 ` [PATCH v7 01/11] cxl/region: Rename misleading variable name @hpa to @hpa_range Robert Richter
2025-11-14 21:39 ` [PATCH v7 02/11] cxl/region: Store root decoder in struct cxl_region Robert Richter
2025-11-14 21:39 ` [PATCH v7 03/11] cxl/region: Store HPA range " Robert Richter
2025-11-14 21:39 ` [PATCH v7 04/11] cxl: Simplify cxl_root_ops allocation and handling Robert Richter
2025-11-14 21:39 ` [PATCH v7 05/11] cxl/region: Separate region parameter setup and region construction Robert Richter
2025-11-14 21:39 ` [PATCH v7 06/11] cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos() Robert Richter
2025-11-17 13:57 ` Jonathan Cameron [this message]
2025-11-14 21:39 ` [PATCH v7 07/11] cxl/region: Use region data to get the root decoder Robert Richter
2025-11-14 21:39 ` [PATCH v7 08/11] cxl: Introduce callback for HPA address ranges translation Robert Richter
2025-11-14 21:39 ` [PATCH v7 09/11] cxl/acpi: Prepare use of EFI runtime services Robert Richter
2025-11-14 21:39 ` [PATCH v7 10/11] cxl: Enable AMD Zen5 address translation using ACPI PRMT Robert Richter
2025-11-14 21:39 ` [PATCH v7 11/11] cxl/atl: Lock decoders that need address translation Robert Richter
2025-11-14 22:05 ` Dave Jiang
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