From: Jonathan Cameron <jic23@kernel.org>
To: Davidlohr Bueso <dave@stgolabs.net>
Cc: dave.jiang@intel.com, alison.schofield@intel.com,
icheng@nvidia.com, ming.li@zohomail.com,
benjamin.cheatham@amd.com, alucerop@amd.com,
linux-cxl@vger.kernel.org
Subject: Re: [PATCH v8 03/10] cxl/hdm: Add BI coherency support for endpoint decoders
Date: Wed, 9 Sep 2026 22:27:03 +0100 [thread overview]
Message-ID: <20260909222703.4387706a@jic23-hlaptop> (raw)
In-Reply-To: <20260909170302.1550680-4-dave@stgolabs.net>
On Wed, 9 Sep 2026 10:02:55 -0700
Davidlohr Bueso <dave@stgolabs.net> wrote:
> Cache the HDM decoder's Supported Coherency Models on struct cxl_hdm.
> A later patch has region attach consult it to verify the HDM supports
> the region's coherency type.
>
> For uncommitted endpoint decoders, init_hdm_decoder() defaults
> target_type from supported_coherency: Type 3 devices default to
> HDM-DB when the HDM is device-coherent-only, HDM-H otherwise.
>
> Pre-committed decoders with the BI bit set are not supported because
> endpoint and port enumerations are independent -- at decoder
> enumeration cxlds->bi is not yet known, so the topology cannot be
> verified.
>
> Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
next prev parent reply other threads:[~2026-09-09 21:27 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 17:02 [PATCH v8 0/10] cxl: Support Back-Invalidate Davidlohr Bueso
2026-09-09 17:02 ` [PATCH v8 01/10] cxl: Add BI register probing and port initialization Davidlohr Bueso
2026-09-09 19:38 ` Jonathan Cameron
2026-09-09 17:02 ` [PATCH v8 02/10] cxl/pci: Add BI topology enable/disable Davidlohr Bueso
2026-09-09 21:21 ` Jonathan Cameron
2026-09-10 1:33 ` Davidlohr Bueso
2026-09-10 2:40 ` Li Ming
2026-09-15 20:17 ` Davidlohr Bueso
2026-09-16 1:28 ` Li Ming
2026-09-09 17:02 ` [PATCH v8 03/10] cxl/hdm: Add BI coherency support for endpoint decoders Davidlohr Bueso
2026-09-09 21:27 ` Jonathan Cameron [this message]
2026-09-09 17:02 ` [PATCH v8 04/10] cxl: Add HDM-DB region creation Davidlohr Bueso
2026-09-09 17:48 ` sashiko-bot
2026-09-16 23:27 ` Davidlohr Bueso
2026-09-09 21:31 ` Jonathan Cameron
2026-09-09 17:02 ` [PATCH v8 05/10] cxl/hdm: Rename decoder coherency flags Davidlohr Bueso
2026-09-09 21:32 ` Jonathan Cameron
2026-09-09 17:02 ` [PATCH v8 06/10] cxl/region: Log the coherency model at region creation Davidlohr Bueso
2026-09-09 21:32 ` Jonathan Cameron
2026-09-09 17:02 ` [PATCH v8 07/10] cxl/pci: Split BI capability probe from setup Davidlohr Bueso
2026-09-09 21:40 ` Jonathan Cameron
2026-09-09 21:45 ` Davidlohr Bueso
2026-09-09 17:03 ` [PATCH v8 08/10] cxl: Allow auto-committed BI hdm decoders Davidlohr Bueso
2026-09-09 21:45 ` Jonathan Cameron
2026-09-10 11:38 ` Li Ming
2026-09-16 18:10 ` Davidlohr Bueso
2026-09-09 17:03 ` [PATCH v8 09/10] cxl/test: Add mock BI topology support Davidlohr Bueso
2026-09-09 21:49 ` Jonathan Cameron
2026-09-09 22:08 ` Davidlohr Bueso
2026-09-09 17:03 ` [PATCH v8 10/10] cxl/doc: Update maturity map with BI support Davidlohr Bueso
2026-09-09 21:50 ` Jonathan Cameron
2026-09-09 18:47 ` [PATCH v8 0/10] cxl: Support Back-Invalidate Davidlohr Bueso
2026-09-18 16:39 ` Alison Schofield
2026-09-18 19:59 ` Davidlohr Bueso
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