From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zebra.cherry.relay.mailchannels.net (zebra.cherry.relay.mailchannels.net [23.83.223.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C603C3D5648 for ; Mon, 27 Jul 2026 19:36:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=23.83.223.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785180987; cv=none; b=rpTgI5Vm2b+H8d522QHrGW3M5YY1849V2RcLtG3jB0oobxTyzjgMcDdkQ6jdDfA0J2UwaLIv9cKcYKrZPoGkQKzlTjP6LYdt3RHgHBlxsR2TGbL3u/CBvmEphmE42Wsvp411d1LwhMrRuiAYX4Rd2ygMolpDFCzZPaEnR5ek34c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785180987; c=relaxed/simple; bh=A1vHAIqvW2Zl3niF3kQUHxXT5H76StpPwvHYJTFo7Gc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=QHeT9LaDrdRvignxYSklIQDpIdasRtRnyp3X2I7y3smhCjW+gLy15Ody/ym8gQgNU2m8AnDOg9TPW9DiX/NKuUmRbagDzm9IKCVljvNwX1Q5rPqXqqkTF+4L1jx9YO/FUd3pAc7tWGJAiiMjLEMGlmiuriQtuUHIMSN/dZOvinA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=stgolabs.net; spf=fail smtp.mailfrom=stgolabs.net; dkim=pass (2048-bit key) header.d=stgolabs.net header.i=@stgolabs.net header.b=jcHUJpIr; arc=none smtp.client-ip=23.83.223.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=stgolabs.net Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=stgolabs.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=stgolabs.net header.i=@stgolabs.net header.b="jcHUJpIr" X-Sender-Id: dreamhost|x-authsender|dave@stgolabs.net Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id 56F2694203E; Mon, 27 Jul 2026 19:36:13 +0000 (UTC) Received: from pdx1-sub0-mail-a227.dreamhost.com (100-109-137-215.trex-nlb.outbound.svc.cluster.local [100.109.137.215]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id 0D55B9420DF; Mon, 27 Jul 2026 19:36:09 +0000 (UTC) X-Sender-Id: dreamhost|x-authsender|dave@stgolabs.net X-MC-Relay: Neutral X-MailChannels-SenderId: dreamhost|x-authsender|dave@stgolabs.net X-MailChannels-Auth-Id: dreamhost X-Cold-Average: 36a021574896100e_1785180973265_3250492311 X-MC-Loop-Signature: 1785180973265:784527773 X-MC-Ingress-Time: 1785180973265 Received: from pdx1-sub0-mail-a227.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384) by 100.109.137.215 (trex/8.0.2); Mon, 27 Jul 2026 19:36:13 +0000 Received: from offworld.lan (unknown [76.167.199.67]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dave@stgolabs.net) by pdx1-sub0-mail-a227.dreamhost.com (Postfix) with ESMTPSA id 4h883D2nXyz1Kt; Mon, 27 Jul 2026 12:36:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1785180968; bh=5JwC/hTlC4xCgEDUgEksJjbITpxFcNrmT4ft706uJpQ=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=jcHUJpIr9vMQ/YcaxN/UXZ0GeIipXZekIHHV5nY7YRuzS6ia1JzlheJtFNNGhoeBp IkqjWnGHZglxbG5NtLGJI4qyD2HFOBZbLv3sHbKwN54/ScxKh9RB8Tx3K0s0VtMdDZ Z3f1Dioui9MV3w/SlyUxtn2lJkKkZav/BL0kVwT5g6HDE7T4aTzkLHWj+I+vQJ2VE7 iwlOUIA91AssqEeSDfhvx4IRRGUicsJmefJ0aizKAckS8030Bg397XJM/AMO6D/yQZ 4lSYOgs3n7h5s2d3OkMU/a7Z0xG9kJyfgQVzPKoMK/YSkR5ZgOD/4tNu230E1oa5BK cKcx68mrDOYXQ== From: Davidlohr Bueso To: dave.jiang@intel.com Cc: jic23@kernel.org, alison.schofield@intel.com, icheng@nvidia.com, benjamin.cheatham@amd.com, alucerop@amd.com, dongjoo.seo1@samsung.com, dave@stgolabs.net, linux-kernel@vger.kernel.org Subject: [PATCH v6 6/9] cxl/region: Log the coherency model at region creation Date: Mon, 27 Jul 2026 12:35:58 -0700 Message-Id: <20260727193601.651871-7-dave@stgolabs.net> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260727193601.651871-1-dave@stgolabs.net> References: <20260727193601.651871-1-dave@stgolabs.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Region assembly emits plenty of debug information - resources, interleave geometry, target placement - but not the coherency model the region operates in. Signed-off-by: Davidlohr Bueso --- drivers/cxl/core/region.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index 1b8284f66e61..7c11d5788d99 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -2746,6 +2746,17 @@ void kill_regions(struct cxl_root_decoder *cxlrd) unregister_region(cxlr); } +static const char *cxl_region_coherency(struct cxl_region *cxlr) +{ + if (cxlr->type == CXL_DECODER_HOSTONLYMEM) + return "HDM-H"; + + if (cxl_root_decoder_is_bi(cxlr->cxlrd)) + return "HDM-DB"; + + return "HDM-D"; +} + /** * devm_cxl_add_region - Adds a region to a decoder * @cxlrd: root decoder @@ -2790,8 +2801,9 @@ static struct cxl_region *devm_cxl_add_region(struct cxl_root_decoder *cxlrd, return ERR_PTR(rc); } - dev_dbg(port->uport_dev, "%s: created %s\n", - dev_name(&cxlrd->cxlsd.cxld.dev), dev_name(dev)); + dev_dbg(port->uport_dev, "%s: created %s %s\n", + dev_name(&cxlrd->cxlsd.cxld.dev), cxl_region_coherency(cxlr), + dev_name(dev)); return cxlr; err: put_device(dev); -- 2.39.5