From: sashiko-bot@kernel.org
To: "Srirangan Madhavan" <smadhavan@nvidia.com>
Cc: linux-pci@vger.kernel.org, linux-cxl@vger.kernel.org
Subject: Re: [PATCH v12 07/12] cxl: Validate HDM ranges before CXL reset
Date: Thu, 10 Sep 2026 07:22:03 +0000 [thread overview]
Message-ID: <20260910072203.ECFE91F00893@smtp.kernel.org> (raw)
In-Reply-To: <20260910070808.1444264-8-smadhavan@nvidia.com>
> Before reset, require cached HDM decoder state, collect enabled decoder
> ranges, and reserve them with request_mem_region(). This rejects reset
> while affected CXL memory is busy and keeps the validation stable
> through reset.
>
> If CPU cache invalidation support is available, invalidate the affected
> ranges before reset. If the runtime backend is unavailable, continue
> after the range reservation succeeds.
>
> Reject CXL Reset when no cached HDM decoder state is available. The reset
> path needs the cached address map to validate affected ranges and perform
> CPU cache invalidation. Also reject normalized-addressing decoders for
> now because the cached decoder range is not a system physical address.
>
> Signed-off-by: Srirangan Madhavan <smadhavan@nvidia.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260910070808.1444264-1-smadhavan@nvidia.com?part=7
next prev parent reply other threads:[~2026-09-10 7:22 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-10 7:07 [PATCH v12 00/12] PCI/CXL: Add CXL reset support for Type 2 devices Srirangan Madhavan
2026-09-10 7:07 ` [PATCH v12 01/12] cxl: Move HDM decoder programming helpers Srirangan Madhavan
2026-09-10 7:20 ` sashiko-bot
2026-09-11 23:30 ` Jonathan Cameron
2026-09-10 7:07 ` [PATCH v12 02/12] cxl: Make HDM commit helpers available to reset code Srirangan Madhavan
2026-09-10 7:25 ` sashiko-bot
2026-09-10 7:07 ` [PATCH v12 03/12] cxl: Share HDM decoder decode logic Srirangan Madhavan
2026-09-10 7:18 ` sashiko-bot
2026-09-12 0:07 ` Jonathan Cameron
2026-09-10 7:08 ` [PATCH v12 04/12] cxl: Cache decoder settings on PCI devices Srirangan Madhavan
2026-09-10 7:22 ` sashiko-bot
2026-09-12 0:22 ` Jonathan Cameron
2026-09-10 7:08 ` [PATCH v12 05/12] cxl: Cache endpoint decoder settings during PCI enumeration Srirangan Madhavan
2026-09-10 7:25 ` sashiko-bot
2026-09-12 1:03 ` Jonathan Cameron
2026-09-10 7:08 ` [PATCH v12 06/12] cxl: Add CXL Device Reset helper Srirangan Madhavan
2026-09-10 7:20 ` sashiko-bot
2026-09-12 1:26 ` Jonathan Cameron
2026-09-10 7:08 ` [PATCH v12 07/12] cxl: Validate HDM ranges before CXL reset Srirangan Madhavan
2026-09-10 7:22 ` sashiko-bot [this message]
2026-09-12 1:33 ` Jonathan Cameron
2026-09-10 7:08 ` [PATCH v12 08/12] PCI/CXL: Reject CXL Reset on multifunction devices Srirangan Madhavan
2026-09-10 7:20 ` sashiko-bot
2026-09-10 7:08 ` [PATCH v12 09/12] cxl: Restore CXL state after PCI reset Srirangan Madhavan
2026-09-10 7:25 ` sashiko-bot
2026-09-12 1:43 ` Jonathan Cameron
2026-09-10 7:08 ` [PATCH v12 10/12] PCI/CXL: Expose CXL Reset as a PCI reset method Srirangan Madhavan
2026-09-10 7:29 ` sashiko-bot
2026-09-10 7:08 ` [PATCH v12 11/12] Documentation/ABI: Document CXL Reset " Srirangan Madhavan
2026-09-10 7:20 ` sashiko-bot
2026-09-10 7:08 ` [PATCH v12 12/12] PCI/CXL: Restore CXL state after CXL bus reset Srirangan Madhavan
2026-09-10 7:37 ` sashiko-bot
2026-09-10 7:31 ` [PATCH v12 00/12] PCI/CXL: Add CXL reset support for Type 2 devices Srirangan Madhavan
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