From: Alison Schofield <alison.schofield@intel.com>
To: Davidlohr Bueso <dave@stgolabs.net>
Cc: <dave.jiang@intel.com>, <jic23@kernel.org>, <icheng@nvidia.com>,
<ming.li@zohomail.com>, <benjamin.cheatham@amd.com>,
<alucerop@amd.com>, <linux-cxl@vger.kernel.org>,
Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Subject: Re: [PATCH v9 03/10] cxl/hdm: Add BI coherency support for endpoint decoders
Date: Wed, 30 Sep 2026 16:11:56 -0700 [thread overview]
Message-ID: <ar2XPKLCs92qUvmM@aschofie-mobl2.lan> (raw)
In-Reply-To: <ebc907df26d229138fb46051e5b9f4a2299b6432.1790103847.git.dave@stgolabs.net>
On Tue, Sep 22, 2026 at 04:38:40PM -0700, Davidlohr Bueso 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 refused. cxl_bi_setup()
> does not yet take over a path firmware already enabled, so nothing
> verifies that such a decoder's topology can route BISnp.
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
next prev parent reply other threads:[~2026-09-30 23:12 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 23:38 [PATCH v9 0/10] cxl: Support Back-Invalidate Davidlohr Bueso
2026-09-22 23:38 ` [PATCH v9 01/10] cxl: Add BI register probing and port initialization Davidlohr Bueso
2026-09-29 4:06 ` Richard Cheng
2026-09-22 23:38 ` [PATCH v9 02/10] cxl/pci: Add BI topology enable/disable Davidlohr Bueso
2026-09-23 1:12 ` sashiko-bot
2026-09-23 17:00 ` Davidlohr Bueso
2026-09-23 5:41 ` Li Ming
2026-09-25 23:32 ` Jonathan Cameron
2026-09-29 8:52 ` Richard Cheng
2026-09-30 23:01 ` Alison Schofield
2026-09-22 23:38 ` [PATCH v9 03/10] cxl/hdm: Add BI coherency support for endpoint decoders Davidlohr Bueso
2026-09-23 6:06 ` Li Ming
2026-09-30 23:11 ` Alison Schofield [this message]
2026-09-22 23:38 ` [PATCH v9 04/10] cxl: Add HDM-DB region creation Davidlohr Bueso
2026-10-01 3:28 ` Alison Schofield
2026-10-01 8:57 ` Davidlohr Bueso
2026-09-22 23:38 ` [PATCH v9 05/10] cxl/hdm: Rename decoder coherency flags Davidlohr Bueso
2026-09-24 0:49 ` Li Ming
2026-09-22 23:38 ` [PATCH v9 06/10] cxl/region: Log the coherency model at region creation Davidlohr Bueso
2026-09-24 0:49 ` Li Ming
2026-09-30 23:10 ` Alison Schofield
2026-09-22 23:38 ` [PATCH v9 07/10] cxl/pci: Split BI capability probe from setup Davidlohr Bueso
2026-09-24 0:49 ` Li Ming
2026-09-30 23:09 ` Alison Schofield
2026-09-22 23:38 ` [PATCH v9 08/10] cxl: Allow auto-committed BI hdm decoders Davidlohr Bueso
2026-10-01 3:49 ` Alison Schofield
2026-09-22 23:38 ` [PATCH v9 09/10] cxl/test: Add mock BI topology support Davidlohr Bueso
2026-09-23 1:11 ` sashiko-bot
2026-09-23 20:57 ` Davidlohr Bueso
2026-09-23 0:43 ` [PATCH v9 10/10] cxl/doc: Update maturity map with BI support Davidlohr Bueso
2026-09-24 0:50 ` Li Ming
2026-09-30 23:08 ` Alison Schofield
2026-09-30 16:47 ` [PATCH v9 0/10] cxl: Support Back-Invalidate Alison Schofield
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