From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: <linux-cxl@vger.kernel.org>,
Vishal Verma <vishal.l.verma@intel.com>,
"Fan Ni" <fan.ni@samsung.com>, <dave.hansen@linux.intel.com>,
<linux-mm@kvack.org>, <linux-acpi@vger.kernel.org>
Subject: Re: [PATCH v2 09/20] cxl/region: Move region-position validation to a helper
Date: Fri, 10 Feb 2023 17:34:53 +0000 [thread overview]
Message-ID: <20230210173453.00002fc5@Huawei.com> (raw)
In-Reply-To: <167601997584.1924368.4615769326126138969.stgit@dwillia2-xfh.jf.intel.com>
On Fri, 10 Feb 2023 01:06:15 -0800
Dan Williams <dan.j.williams@intel.com> wrote:
> In preparation for region autodiscovery, that needs all devices
> discovered before their relative position in the region can be
> determined, consolidate all position dependent validation in a helper.
>
> Recall that in the on-demand region creation flow the end-user picks the
> position of a given endpoint decoder in a region. In the autodiscovery
> case the position of an endpoint decoder can only be determined after
> all other endpoint decoders that claim to decode the region's address
> range have been enumerated and attached. So, in the autodiscovery case
> endpoint decoders may be attached before their relative position is
> known. Once all decoders arrive, then positions can be determined and
> validated with cxl_region_validate_position() the same as user initiated
> on-demand creation.
>
> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
> Tested-by: Fan Ni <fan.ni@samsung.com>
> Link: https://lore.kernel.org/r/167564538779.847146.8356062886811511706.stgit@dwillia2-xfh.jf.intel.com
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
next prev parent reply other threads:[~2023-02-10 17:35 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-10 9:05 [PATCH v2 00/20] CXL RAM and the 'Soft Reserved' => 'System RAM' default Dan Williams
2023-02-10 9:05 ` [PATCH v2 01/20] cxl/memdev: Fix endpoint port removal Dan Williams
2023-02-10 17:28 ` Jonathan Cameron
2023-02-10 21:14 ` Dan Williams
2023-02-10 23:17 ` Verma, Vishal L
2023-02-10 9:05 ` [PATCH v2 02/20] cxl/Documentation: Update references to attributes added in v6.0 Dan Williams
2023-02-10 9:05 ` [PATCH v2 03/20] cxl/region: Add a mode attribute for regions Dan Williams
2023-02-10 9:05 ` [PATCH v2 04/20] cxl/region: Support empty uuids for non-pmem regions Dan Williams
2023-02-10 17:30 ` Jonathan Cameron
2023-02-10 23:34 ` Ira Weiny
2023-02-10 9:05 ` [PATCH v2 05/20] cxl/region: Validate region mode vs decoder mode Dan Williams
2023-02-10 9:05 ` [PATCH v2 06/20] cxl/region: Add volatile region creation support Dan Williams
2023-02-10 9:06 ` [PATCH v2 07/20] cxl/region: Refactor attach_target() for autodiscovery Dan Williams
2023-02-10 9:06 ` [PATCH v2 08/20] cxl/region: Cleanup target list on attach error Dan Williams
2023-02-10 17:31 ` Jonathan Cameron
2023-02-10 23:17 ` Verma, Vishal L
2023-02-10 23:46 ` Ira Weiny
2023-02-10 9:06 ` [PATCH v2 09/20] cxl/region: Move region-position validation to a helper Dan Williams
2023-02-10 17:34 ` Jonathan Cameron [this message]
2023-02-10 9:06 ` [PATCH v2 10/20] kernel/range: Uplevel the cxl subsystem's range_contains() helper Dan Williams
2023-02-10 9:06 ` [PATCH v2 11/20] cxl/region: Enable CONFIG_CXL_REGION to be toggled Dan Williams
2023-02-10 9:06 ` [PATCH v2 12/20] cxl/port: Split endpoint and switch port probe Dan Williams
2023-02-10 17:41 ` Jonathan Cameron
2023-02-10 23:21 ` Verma, Vishal L
2023-02-10 9:06 ` [PATCH v2 13/20] cxl/region: Add region autodiscovery Dan Williams
2023-02-10 18:09 ` Jonathan Cameron
2023-02-10 21:35 ` Dan Williams
2023-02-14 13:23 ` Jonathan Cameron
2023-02-14 16:43 ` Dan Williams
2023-02-10 21:49 ` Dan Williams
2023-02-11 0:29 ` Verma, Vishal L
2023-02-11 1:03 ` Dan Williams
2023-02-13 19:27 ` Fan Ni
2023-02-28 18:53 ` Fan Ni
2023-02-10 9:06 ` [PATCH v2 14/20] tools/testing/cxl: Define a fixed volatile configuration to parse Dan Williams
2023-02-10 18:12 ` Jonathan Cameron
2023-02-10 18:36 ` Dave Jiang
2023-02-11 0:39 ` Verma, Vishal L
2023-02-10 9:06 ` [PATCH v2 15/20] dax/hmem: Move HMAT and Soft reservation probe initcall level Dan Williams
2023-02-10 21:53 ` Dave Jiang
2023-02-10 21:57 ` Dave Jiang
2023-02-11 0:40 ` Verma, Vishal L
2023-02-10 9:06 ` [PATCH v2 16/20] dax/hmem: Drop unnecessary dax_hmem_remove() Dan Williams
2023-02-10 21:59 ` Dave Jiang
2023-02-11 0:41 ` Verma, Vishal L
2023-02-10 9:07 ` [PATCH v2 17/20] dax/hmem: Convey the dax range via memregion_info() Dan Williams
2023-02-10 22:03 ` Dave Jiang
2023-02-11 4:25 ` Verma, Vishal L
2023-02-10 9:07 ` [PATCH v2 18/20] dax/hmem: Move hmem device registration to dax_hmem.ko Dan Williams
2023-02-10 18:25 ` Jonathan Cameron
2023-02-10 22:09 ` Dave Jiang
2023-02-11 4:41 ` Verma, Vishal L
2023-02-10 9:07 ` [PATCH v2 19/20] dax: Assign RAM regions to memory-hotplug by default Dan Williams
2023-02-10 22:19 ` Dave Jiang
2023-02-11 5:57 ` Verma, Vishal L
2023-02-10 9:07 ` [PATCH v2 20/20] cxl/dax: Create dax devices for CXL RAM regions Dan Williams
2023-02-10 18:38 ` Jonathan Cameron
2023-02-10 22:42 ` Dave Jiang
2023-02-10 17:53 ` [PATCH v2 00/20] CXL RAM and the 'Soft Reserved' => 'System RAM' default Dan Williams
2023-02-11 14:04 ` Gregory Price
2023-02-13 18:22 ` Gregory Price
2023-02-13 18:31 ` Gregory Price
2023-02-22 21:41 ` Fan Ni
2023-02-22 22:18 ` Dan Williams
2023-02-14 13:35 ` Jonathan Cameron
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