From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from crocodile.elm.relay.mailchannels.net (crocodile.elm.relay.mailchannels.net [23.83.212.45]) (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 B9041253B42 for ; Tue, 28 Jul 2026 14:47:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=23.83.212.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785250061; cv=none; b=oLydlCXB2R1pEAWu5ajD0jL6uW5w9piiYPDfJTNpr6SrWJEMH5a5uUwi+3J4aKf4AtWI1OYGiuavzggqY2gapiBieR1UPePrcKp7t5z+/jU+I5k8o4GxKXXh5Je/cFGb9IePtXlRVgz4LLRnW1e4CsykieghKuOh+Z/nrqWzNmE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785250061; c=relaxed/simple; bh=AWspOop5FpvJR4HtQaqSAL2utklPORUxe1kPhyvtQ+I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=hKKsdpvf8Jf1/zscQVUG2bRA6037goxCKVFVvPeOhQC1yIEuHE9aaA3G9gN6Kf1hImqZ8kZVUf8BnK6iib8CHaz3ERSe+sC9ruKVOa0jGDEsTwJybJKdZGp3sqNWJ4FC/PfJZOZzyOPa9Rwfch9rpdwuKJaqZ6bsvs6LNPp/WPY= 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=WYmCms1p; arc=none smtp.client-ip=23.83.212.45 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="WYmCms1p" 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 D277B402A78; Tue, 28 Jul 2026 14:41:54 +0000 (UTC) Received: from pdx1-sub0-mail-a216.dreamhost.com (100-108-77-99.trex-nlb.outbound.svc.cluster.local [100.108.77.99]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id 751F8400B93; Tue, 28 Jul 2026 14:41:50 +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-Unite-Thread: 0b8195e23c33d35c_1785249714763_15189015 X-MC-Loop-Signature: 1785249714762:2178931470 X-MC-Ingress-Time: 1785249714762 Received: from pdx1-sub0-mail-a216.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384) by 100.108.77.99 (trex/8.0.2); Tue, 28 Jul 2026 14:41:54 +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-a216.dreamhost.com (Postfix) with ESMTPSA id 4h8dT95prXz2N; Tue, 28 Jul 2026 07:41:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stgolabs.net; s=dreamhost; t=1785249710; bh=N1hHblkcNPDeeN62ZbicHgM9YL1NxvJusbV5MzI8oWE=; h=From:To:Cc:Subject:Date:Content-Transfer-Encoding; b=WYmCms1pSqKRWcf/niXg1AgR9wa1G74vD6ITvLoRFKhNK+6VbTyI1eSnNYOV6vjCc TDfPogZj8Iw3nQKcEhdo7bUscZ4HDuaY4mSNmXZQ5cH+a1RAr5APH6HxREU+kwdtXt TC1GfhkpgIkilJ6D+XEYRnH1DRk9OAmo/H32BJOqHaLQOPtTcOu9nPpHDLU7PE/2Dp wTlX7O7Cjxm+0fsy1uqVgqtQdAs6HZvjJSqjL7Q/6+087l4LmDgLcjtkIju2DBu8l/ dOInhpil6p9fvn1q0Q221/+zSCI1IfgyWD0NNqsFwENB93YMJStFgKXzcjNH9N1Obd LM98U5CHJxICA== 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-cxl@vger.kernel.org Subject: [PATCH v7 6/8] cxl/region: Log the coherency model at region creation Date: Tue, 28 Jul 2026 07:41:34 -0700 Message-Id: <20260728144136.709882-7-dave@stgolabs.net> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260728144136.709882-1-dave@stgolabs.net> References: <20260728144136.709882-1-dave@stgolabs.net> Precedence: bulk X-Mailing-List: linux-cxl@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 840acc330ede..76c6dc28a407 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -2741,6 +2741,17 @@ 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 @@ -2785,8 +2796,9 @@ 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