From: Simon Horman <horms@kernel.org>
To: alejandro.lucero-palau@amd.com
Cc: linux-cxl@vger.kernel.org, netdev@vger.kernel.org,
dan.j.williams@intel.com, edward.cree@amd.com,
davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
edumazet@google.com, dave.jiang@intel.com,
Alejandro Lucero <alucerop@amd.com>
Subject: Re: [PATCH v11 18/23] cxl: allow region creation by type2 drivers
Date: Thu, 20 Mar 2025 16:21:01 +0000 [thread overview]
Message-ID: <20250320162101.GB892515@horms.kernel.org> (raw)
In-Reply-To: <20250310210340.3234884-19-alejandro.lucero-palau@amd.com>
On Mon, Mar 10, 2025 at 09:03:35PM +0000, alejandro.lucero-palau@amd.com wrote:
> From: Alejandro Lucero <alucerop@amd.com>
>
> Creating a CXL region requires userspace intervention through the cxl
> sysfs files. Type2 support should allow accelerator drivers to create
> such cxl region from kernel code.
>
> Adding that functionality and integrating it with current support for
> memory expanders.
>
> Based on https://lore.kernel.org/linux-cxl/168592159835.1948938.1647215579839222774.stgit@dwillia2-xfh.jf.intel.com/
>
> Signed-off-by: Alejandro Lucero <alucerop@amd.com>
...
> +/**
> + * cxl_create_region - Establish a region given an endpoint decoder
> + * @cxlrd: root decoder to allocate HPA
> + * @cxled: endpoint decoder with reserved DPA capacity
nit: @ways should also be documented here.
Flagged by W=1 builds.
> + *
> + * Returns a fully formed region in the commit state and attached to the
> + * cxl_region driver.
> + */
> +struct cxl_region *cxl_create_region(struct cxl_root_decoder *cxlrd,
> + struct cxl_endpoint_decoder *cxled, int ways)
...
next prev parent reply other threads:[~2025-03-20 16:21 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-10 21:03 [PATCH v11 00/23] add type2 device basic support alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 01/23] cxl: " alejandro.lucero-palau
2025-03-11 20:05 ` Ben Cheatham
2025-03-12 8:20 ` Alejandro Lucero Palau
2025-03-12 20:00 ` Alison Schofield
2025-03-17 7:56 ` Alejandro Lucero Palau
2025-03-10 21:03 ` [PATCH v11 02/23] sfc: add cxl support alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 03/23] cxl: move pci generic code alejandro.lucero-palau
2025-03-11 20:05 ` Ben Cheatham
2025-03-12 8:26 ` Alejandro Lucero Palau
2025-03-10 21:03 ` [PATCH v11 04/23] cxl: move register/capability check to driver alejandro.lucero-palau
2025-03-11 20:05 ` Ben Cheatham
2025-03-25 14:21 ` Alejandro Lucero Palau
2025-03-10 21:03 ` [PATCH v11 05/23] cxl: add function for type2 cxl regs setup alejandro.lucero-palau
2025-03-11 20:05 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 06/23] sfc: make regs setup with checking and set media ready alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 07/23] cxl: support dpa initialization without a mailbox alejandro.lucero-palau
2025-03-11 20:05 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 08/23] sfc: initialize dpa alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 09/23] cxl: prepare memdev creation for type2 alejandro.lucero-palau
2025-03-11 20:05 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 10/23] sfc: create type2 cxl memdev alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 11/23] cxl: define a driver interface for HPA free space enumeration alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-25 15:07 ` Alejandro Lucero Palau
2025-03-25 15:46 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 12/23] fc: obtain root decoder with enough HPA free space alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 13/23] cxl: define a driver interface for DPA allocation alejandro.lucero-palau
2025-03-11 19:12 ` kernel test robot
2025-03-11 20:06 ` Ben Cheatham
2025-03-11 20:17 ` kernel test robot
2025-03-20 16:18 ` Simon Horman
2025-03-24 16:16 ` Alejandro Lucero Palau
2025-03-25 15:23 ` Simon Horman
2025-03-10 21:03 ` [PATCH v11 14/23] sfc: get endpoint decoder alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 15/23] cxl: make region type based on endpoint type alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 16/23] cxl/region: factor out interleave ways setup alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 17/23] cxl/region: factor out interleave granularity setup alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 18/23] cxl: allow region creation by type2 drivers alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-12 8:28 ` Alejandro Lucero Palau
2025-03-20 16:21 ` Simon Horman [this message]
2025-03-10 21:03 ` [PATCH v11 19/23] cxl: add region flag for precluding a device memory to be used for dax alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 20/23] sfc: create cxl region alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 21/23] cxl: add function for obtaining region range alejandro.lucero-palau
2025-03-11 20:06 ` Ben Cheatham
2025-03-10 21:03 ` [PATCH v11 22/23] sfc: update MCDI protocol headers alejandro.lucero-palau
2025-03-10 21:03 ` [PATCH v11 23/23] sfc: support pio mapping based on cxl alejandro.lucero-palau
2025-03-12 6:42 ` kernel test robot
2025-03-12 17:57 ` [PATCH v11 00/23] add type2 device basic support Alison Schofield
2025-03-17 7:55 ` Alejandro Lucero Palau
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