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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.

  reply	other threads:[~2025-12-04  0:55 UTC|newest]

Thread overview: 36+ 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
2025-12-17 23:17       ` dan.j.williams
2025-12-02 23:31   ` Dave Jiang
2025-12-17 12:05   ` Jonathan Cameron
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
2025-12-17 12:07     ` Jonathan Cameron
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
2025-12-12 19:59     ` Koralahalli Channabasappa, Smita
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
2025-12-12 22:12     ` Koralahalli Channabasappa, Smita
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]
2025-12-12 22:14     ` Koralahalli Channabasappa, Smita
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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