From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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>,
Ben Cheatham <benjamin.cheatham@amd.com>
Subject: Re: [PATCH v12 13/23] cxl: define a driver interface for DPA allocation
Date: Fri, 4 Apr 2025 17:41:40 +0100 [thread overview]
Message-ID: <20250404174140.000073fd@huawei.com> (raw)
In-Reply-To: <20250331144555.1947819-14-alejandro.lucero-palau@amd.com>
On Mon, 31 Mar 2025 15:45:45 +0100
alejandro.lucero-palau@amd.com wrote:
> From: Alejandro Lucero <alucerop@amd.com>
>
> Region creation involves finding available DPA (device-physical-address)
> capacity to map into HPA (host-physical-address) space. Define an API,
> cxl_request_dpa(), that tries to allocate the DPA memory the driver
> requires to operate. The memory requested should not be bigger than the
> max available HPA obtained previously with cxl_get_hpa_freespace.
>
> Based on https://lore.kernel.org/linux-cxl/168592158743.1948938.7622563891193802610.stgit@dwillia2-xfh.jf.intel.com/
Lets start a campaign for Dan to use shorter msg IDs :)
>
> Signed-off-by: Alejandro Lucero <alucerop@amd.com>
> Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
next prev parent reply other threads:[~2025-04-04 16:41 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-31 14:45 [PATCH v12 00/23] cxl: add type2 device basic support alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 01/23] " alejandro.lucero-palau
2025-04-01 17:36 ` Alejandro Lucero Palau
2025-04-04 15:24 ` Jonathan Cameron
2025-04-07 9:50 ` Alejandro Lucero Palau
2025-04-10 8:12 ` Alejandro Lucero Palau
2025-04-07 16:55 ` Dave Jiang
2025-03-31 14:45 ` [PATCH v12 02/23] sfc: add cxl support alejandro.lucero-palau
2025-03-31 18:31 ` Simon Horman
2025-04-07 13:59 ` Alejandro Lucero Palau
2025-04-04 15:29 ` Jonathan Cameron
2025-03-31 14:45 ` [PATCH v12 03/23] cxl: move pci generic code alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 04/23] cxl: move register/capability check to driver alejandro.lucero-palau
2025-04-04 15:47 ` Jonathan Cameron
2025-04-07 13:40 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 05/23] cxl: add function for type2 cxl regs setup alejandro.lucero-palau
2025-03-31 18:33 ` Simon Horman
2025-04-07 14:00 ` Alejandro Lucero Palau
2025-04-04 16:03 ` Jonathan Cameron
2025-04-07 10:04 ` Alejandro Lucero Palau
2025-04-15 16:34 ` Jonathan Cameron
2025-03-31 14:45 ` [PATCH v12 06/23] sfc: make regs setup with checking and set media ready alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 07/23] cxl: support dpa initialization without a mailbox alejandro.lucero-palau
2025-04-04 16:05 ` Jonathan Cameron
2025-04-07 10:53 ` Alejandro Lucero Palau
2025-04-10 11:37 ` Alejandro Lucero Palau
2025-04-04 16:11 ` Jonathan Cameron
2025-04-07 10:56 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 08/23] sfc: initialize dpa alejandro.lucero-palau
2025-04-04 16:12 ` Jonathan Cameron
2025-04-07 11:01 ` Alejandro Lucero Palau
2025-04-10 11:48 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 09/23] cxl: prepare memdev creation for type2 alejandro.lucero-palau
2025-03-31 18:34 ` Simon Horman
2025-04-07 14:01 ` Alejandro Lucero Palau
2025-04-04 16:25 ` Jonathan Cameron
2025-04-11 21:07 ` Dave Jiang
2025-03-31 14:45 ` [PATCH v12 10/23] sfc: create type2 cxl memdev alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 11/23] cxl: define a driver interface for HPA free space enumeration alejandro.lucero-palau
2025-04-04 16:37 ` Jonathan Cameron
2025-04-07 13:25 ` Alejandro Lucero Palau
2025-04-11 21:30 ` Dave Jiang
2025-04-14 13:14 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 12/23] sfc: obtain root decoder with enough HPA free space alejandro.lucero-palau
2025-04-04 16:38 ` Jonathan Cameron
2025-04-07 11:02 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 13/23] cxl: define a driver interface for DPA allocation alejandro.lucero-palau
2025-04-04 16:41 ` Jonathan Cameron [this message]
2025-04-11 22:41 ` Dave Jiang
2025-04-14 13:28 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 14/23] sfc: get endpoint decoder alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 15/23] cxl: make region type based on endpoint type alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 16/23] cxl/region: factor out interleave ways setup alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 17/23] cxl/region: factor out interleave granularity setup alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 18/23] cxl: allow region creation by type2 drivers alejandro.lucero-palau
2025-04-04 16:45 ` Jonathan Cameron
2025-04-07 11:03 ` Alejandro Lucero Palau
2025-04-11 23:18 ` Dave Jiang
2025-04-14 13:52 ` Alejandro Lucero Palau
2025-03-31 14:45 ` [PATCH v12 19/23] cxl: add region flag for precluding a device memory to be used for dax alejandro.lucero-palau
2025-04-11 23:25 ` Dave Jiang
2025-03-31 14:45 ` [PATCH v12 20/23] sfc: create cxl region alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 21/23] cxl: add function for obtaining region range alejandro.lucero-palau
2025-04-11 23:32 ` Dave Jiang
2025-03-31 14:45 ` [PATCH v12 22/23] sfc: update MCDI protocol headers alejandro.lucero-palau
2025-03-31 14:45 ` [PATCH v12 23/23] sfc: support pio mapping based on cxl alejandro.lucero-palau
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