From: <dan.j.williams@intel.com>
To: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>,
<linux-cxl@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<nvdimm@lists.linux.dev>, <linux-fsdevel@vger.kernel.org>,
<linux-pm@vger.kernel.org>
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>,
Jonathan Cameron <jonathan.cameron@huawei.com>,
Yazen Ghannam <yazen.ghannam@amd.com>,
Dave Jiang <dave.jiang@intel.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@kernel.org>,
Li Ming <ming.li@zohomail.com>,
Jeff Johnson <jeff.johnson@oss.qualcomm.com>,
"Ying Huang" <huang.ying.caritas@gmail.com>,
Yao Xingtao <yaoxt.fnst@fujitsu.com>,
Peter Zijlstra <peterz@infradead.org>,
Greg KH <gregkh@linuxfoundation.org>,
Nathan Fontenot <nathan.fontenot@amd.com>,
Terry Bowman <terry.bowman@amd.com>,
Robert Richter <rrichter@amd.com>,
Benjamin Cheatham <benjamin.cheatham@amd.com>,
Zhijian Li <lizhijian@fujitsu.com>,
"Borislav Petkov" <bp@alien8.de>,
Ard Biesheuvel <ardb@kernel.org>
Subject: Re: [PATCH v4 9/9] dax/hmem: Reintroduce Soft Reserved ranges back into the iomem tree
Date: Wed, 3 Dec 2025 16:54:51 -0800 [thread overview]
Message-ID: <6930dbdbcc6e_198110055@dwillia2-mobl4.notmuch> (raw)
In-Reply-To: <20251120031925.87762-10-Smita.KoralahalliChannabasappa@amd.com>
Smita Koralahalli wrote:
> Reworked from a patch by Alison Schofield <alison.schofield@intel.com>
>
> Reintroduce Soft Reserved range into the iomem_resource tree for HMEM
> to consume.
>
> This restores visibility in /proc/iomem for ranges actively in use, while
> avoiding the early-boot conflicts that occurred when Soft Reserved was
> published into iomem before CXL window and region discovery.
>
> Link: https://lore.kernel.org/linux-cxl/29312c0765224ae76862d59a17748c8188fb95f1.1692638817.git.alison.schofield@intel.com/
> Co-developed-by: Alison Schofield <alison.schofield@intel.com>
> Signed-off-by: Alison Schofield <alison.schofield@intel.com>
> Co-developed-by: Zhijian Li <lizhijian@fujitsu.com>
> Signed-off-by: Zhijian Li <lizhijian@fujitsu.com>
> Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
> Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Looks good to me:
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Thanks for all the work on this Smita, and Alison too, you have flushed
out many issues and helped me through my blind spots.
next prev parent reply other threads:[~2025-12-04 0:55 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-20 3:19 [PATCH v4 0/9] dax/hmem, cxl: Coordinate Soft Reserved handling with CXL and HMEM Smita Koralahalli
2025-11-20 3:19 ` [PATCH v4 1/9] dax/hmem, e820, resource: Defer Soft Reserved insertion until hmem is ready Smita Koralahalli
2025-12-02 22:19 ` dan.j.williams
2025-12-11 23:20 ` Koralahalli Channabasappa, Smita
2025-12-02 23:31 ` Dave Jiang
2025-11-20 3:19 ` [PATCH v4 2/9] dax/hmem: Request cxl_acpi and cxl_pci before walking Soft Reserved ranges Smita Koralahalli
2025-11-20 3:19 ` [PATCH v4 3/9] dax/hmem: Gate Soft Reserved deferral on DEV_DAX_CXL Smita Koralahalli
2025-12-02 23:32 ` Dave Jiang
2025-11-20 3:19 ` [PATCH v4 4/9] dax/hmem: Defer handling of Soft Reserved ranges that overlap CXL windows Smita Koralahalli
2025-12-02 22:37 ` dan.j.williams
2025-12-11 23:23 ` Koralahalli Channabasappa, Smita
2025-11-20 3:19 ` [PATCH v4 5/9] cxl/region, dax/hmem: Arbitrate Soft Reserved ownership with cxl_regions_fully_map() Smita Koralahalli
2025-12-03 3:50 ` dan.j.williams
2025-12-11 23:42 ` Koralahalli Channabasappa, Smita
2025-11-20 3:19 ` [PATCH v4 6/9] cxl/region: Add register_dax flag to defer DAX setup Smita Koralahalli
2025-11-20 18:17 ` Koralahalli Channabasappa, Smita
2025-11-20 20:21 ` kernel test robot
2025-12-04 0:22 ` dan.j.williams
2025-11-20 3:19 ` [PATCH v4 7/9] cxl/region, dax/hmem: Register cxl_dax only when CXL owns Soft Reserved span Smita Koralahalli
2025-11-20 3:19 ` [PATCH v4 8/9] cxl/region, dax/hmem: Tear down CXL regions when HMEM reclaims Soft Reserved Smita Koralahalli
2025-12-04 0:50 ` dan.j.williams
2025-11-20 3:19 ` [PATCH v4 9/9] dax/hmem: Reintroduce Soft Reserved ranges back into the iomem tree Smita Koralahalli
2025-12-04 0:54 ` dan.j.williams [this message]
2025-12-01 19:56 ` [PATCH v4 0/9] dax/hmem, cxl: Coordinate Soft Reserved handling with CXL and HMEM Alison Schofield
2025-12-03 13:35 ` Tomasz Wolski
2025-12-03 22:05 ` dan.j.williams
2025-12-05 2:54 ` Yasunori Gotou (Fujitsu)
2025-12-05 23:04 ` Tomasz Wolski
2025-12-06 0:11 ` dan.j.williams
2025-12-02 6:41 ` dan.j.williams
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