From: Tomasz Wolski <tomasz.wolski@fujitsu.com>
To: smita.koralahallichannabasappa@amd.com
Cc: alison.schofield@intel.com, ardb@kernel.org,
benjamin.cheatham@amd.com, bp@alien8.de,
dan.j.williams@intel.com, dave.jiang@intel.com,
dave@stgolabs.net, gregkh@linuxfoundation.org,
huang.ying.caritas@gmail.com, ira.weiny@intel.com, jack@suse.cz,
jeff.johnson@oss.qualcomm.com, jonathan.cameron@huawei.com,
len.brown@intel.com, linux-cxl@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, lizhijian@fujitsu.com,
ming.li@zohomail.com, nathan.fontenot@amd.com,
nvdimm@lists.linux.dev, pavel@kernel.org, peterz@infradead.org,
rafael@kernel.org, rrichter@amd.com, terry.bowman@amd.com,
tomasz.wolski@fujitsu.com, vishal.l.verma@intel.com,
willy@infradead.org, yaoxt.fnst@fujitsu.com,
yazen.ghannam@amd.com
Subject: Re: [PATCH v6 0/9] dax/hmem, cxl: Coordinate Soft Reserved handling with CXL and HMEM
Date: Fri, 20 Feb 2026 10:45:10 +0100 [thread overview]
Message-ID: <20260220094510.17955-1-tomasz.wolski@fujitsu.com> (raw)
In-Reply-To: <20260210064501.157591-1-Smita.KoralahalliChannabasappa@amd.com>
Tested on QEMU and physical setups.
I have one question about "Soft Reserve" parent entries in iomem.
On QEMU I see parent "Soft Reserved":
a90000000-b4fffffff : Soft Reserved
a90000000-b4fffffff : CXL Window 0
a90000000-b4fffffff : dax1.0
a90000000-b4fffffff : System RAM (kmem)
While on my physical setup this is missing - not sure if this is okay?
BIOS-e820: [mem 0x0000002070000000-0x000000a06fffffff] soft reserved
2070000000-606fffffff : CXL Window 0
2070000000-606fffffff : region0
2070000000-606fffffff : dax0.0
2070000000-606fffffff : System RAM (kmem)
6070000000-a06fffffff : CXL Window 1
6070000000-a06fffffff : region1
6070000000-a06fffffff : dax1.0
6070000000-a06fffffff : System RAM (kmem)
Tested-by: Tomasz Wolski <tomasz.wolski@fujitsu.com>
next prev parent reply other threads:[~2026-02-20 9:45 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-10 6:44 [PATCH v6 0/9] dax/hmem, cxl: Coordinate Soft Reserved handling with CXL and HMEM Smita Koralahalli
2026-02-10 6:44 ` [PATCH v6 1/9] dax/hmem: Request cxl_acpi and cxl_pci before walking Soft Reserved ranges Smita Koralahalli
2026-02-19 3:22 ` Alison Schofield
2026-02-10 6:44 ` [PATCH v6 2/9] dax/hmem: Gate Soft Reserved deferral on DEV_DAX_CXL Smita Koralahalli
2026-02-19 3:23 ` Alison Schofield
2026-02-10 6:44 ` [PATCH v6 3/9] cxl/region: Skip decoder reset on detach for autodiscovered regions Smita Koralahalli
2026-02-19 3:44 ` Alison Schofield
2026-02-20 20:35 ` Koralahalli Channabasappa, Smita
2026-03-11 21:37 ` Dan Williams
2026-03-12 19:53 ` Dan Williams
2026-03-12 21:28 ` Koralahalli Channabasappa, Smita
2026-03-13 12:54 ` Alejandro Lucero Palau
2026-03-17 2:14 ` Dan Williams
2026-03-18 7:33 ` Alejandro Lucero Palau
2026-03-18 21:49 ` Dave Jiang
2026-03-18 21:27 ` Alison Schofield
2026-03-24 14:06 ` Alejandro Lucero Palau
2026-03-24 19:46 ` Dan Williams
2026-03-24 22:23 ` Alejandro Lucero Palau
2026-03-25 1:51 ` Alison Schofield
2026-02-10 6:44 ` [PATCH v6 4/9] dax/cxl, hmem: Initialize hmem early and defer dax_cxl binding Smita Koralahalli
2026-02-18 15:54 ` Dave Jiang
2026-03-09 14:31 ` Jonathan Cameron
2026-02-10 6:44 ` [PATCH v6 5/9] dax: Track all dax_region allocations under a global resource tree Smita Koralahalli
2026-02-18 16:04 ` Dave Jiang
2026-03-09 14:37 ` Jonathan Cameron
2026-03-12 21:30 ` Koralahalli Channabasappa, Smita
2026-03-12 0:27 ` Dan Williams
2026-03-12 21:31 ` Koralahalli Channabasappa, Smita
2026-02-10 6:44 ` [PATCH v6 6/9] cxl/region: Add helper to check Soft Reserved containment by CXL regions Smita Koralahalli
2026-03-12 0:29 ` Dan Williams
2026-02-10 6:44 ` [PATCH v6 7/9] dax: Add deferred-work helpers for dax_hmem and dax_cxl coordination Smita Koralahalli
2026-02-18 17:52 ` Dave Jiang
2026-02-20 0:02 ` Koralahalli Channabasappa, Smita
2026-02-20 15:55 ` Dave Jiang
2026-03-09 14:49 ` Jonathan Cameron
2026-02-10 6:45 ` [PATCH v6 8/9] dax/hmem, cxl: Defer and resolve ownership of Soft Reserved memory ranges Smita Koralahalli
2026-02-18 18:05 ` Dave Jiang
2026-02-20 19:54 ` Koralahalli Channabasappa, Smita
2026-02-20 10:14 ` Alejandro Lucero Palau
2026-03-12 2:28 ` Dan Williams
2026-03-13 18:41 ` Koralahalli Channabasappa, Smita
2026-03-17 2:36 ` Dan Williams
2026-03-16 22:26 ` Koralahalli Channabasappa, Smita
2026-03-17 2:42 ` Dan Williams
2026-02-10 6:45 ` [PATCH v6 9/9] dax/hmem: Reintroduce Soft Reserved ranges back into the iomem tree Smita Koralahalli
2026-02-10 19:16 ` [PATCH v6 0/9] dax/hmem, cxl: Coordinate Soft Reserved handling with CXL and HMEM Alison Schofield
2026-02-10 19:49 ` Koralahalli Channabasappa, Smita
2026-02-12 6:38 ` Alison Schofield
2026-02-20 21:00 ` Koralahalli Channabasappa, Smita
2026-02-12 14:44 ` Tomasz Wolski
2026-02-12 21:18 ` Alison Schofield
2026-02-13 7:47 ` Yasunori Goto (Fujitsu)
2026-02-13 17:31 ` Alison Schofield
2026-02-16 5:15 ` Yasunori Goto (Fujitsu)
2026-02-12 20:02 ` [sos-linux-dev] " Koralahalli Channabasappa, Smita
2026-02-13 14:04 ` Gregory Price
2026-02-20 20:47 ` Koralahalli Channabasappa, Smita
2026-02-20 9:45 ` Tomasz Wolski [this message]
2026-02-20 21:19 ` Koralahalli Channabasappa, Smita
2026-02-22 23:17 ` Tomasz Wolski
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