From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa3.hc1455-7.c3s2.iphmx.com (esa3.hc1455-7.c3s2.iphmx.com [207.54.90.49]) (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 0163C3DFC93; Tue, 19 May 2026 08:15:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=207.54.90.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779178522; cv=none; b=Rliq9sH57t/sAeml/EsG3+dz0AN6Awm29V82Nf9csyYRqYcZzhczJMamczF+qcNuXccvFTzVM463g54/10dNPFqPWBiVDM1rjBvyvcbZatHE49PyJPFMVSIOkvY/Km7kRXJUZj+WKn3KdmVG2pFpfpWJY081duCgwFxgBGJKc/o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779178522; c=relaxed/simple; bh=TJ8fpz1evDXICM3tkQS1KlJYrX6HFaEpbf6rZUzgB2c=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=u00H2vcEqK5zn1YkhP4+digfAOM3oCHAJTShkY+gXnFRfSJMtzRyLIhsTesjhWRdTV4k07rQe3QksKohD9z4MFWkw8fIuabelbngaeYwh7/Y/Q1+wozSfNFt0Hhqw+ykPORTb7397afizfTpT/WODooHEkJNpoFhKNW1Moijk1g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fujitsu.com; spf=pass smtp.mailfrom=fujitsu.com; dkim=pass (2048-bit key) header.d=fujitsu.com header.i=@fujitsu.com header.b=bOK36c44; arc=none smtp.client-ip=207.54.90.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fujitsu.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fujitsu.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fujitsu.com header.i=@fujitsu.com header.b="bOK36c44" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=fujitsu.com; i=@fujitsu.com; q=dns/txt; s=fj2; t=1779178519; x=1810714519; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=TJ8fpz1evDXICM3tkQS1KlJYrX6HFaEpbf6rZUzgB2c=; b=bOK36c44Q3XmC1jYNoxmdOZqQU7hOaM03Z8I6Nfws4zy4WiST++8Khf5 6RlvJn/vOiRmx0RR18ySmSFk0ZyL6WWmXzoXBBewSQwAIHQU/7XCgtujp WdhjJvnSlZQJUb7ZOh3IbsSkZ859dWSYfDlG59suHNAgy1bAAnLGJ9eE8 Nxi7RvNIMOoSIn0Kosgd+BG29KKSb+R5aR60WDqfIfeZApae6x6iCpTZy 6vXghYsn6A5zoUXjiJhgYd3QaXBLfQihe6xCRNHSdb0MgRUXRYn+lv9Zh sAdSPs2F82dloIzpZeHJZxqdRhC0ibmhfsvlr+z7lkc1+JhbV1ZEIf4EJ Q==; X-CSE-ConnectionGUID: 3QEqqa1TQla1Oqi2r4scHg== X-CSE-MsgGUID: xeeyy0e7TLaXFUJKYzyITw== X-IronPort-AV: E=McAfee;i="6800,10657,11790"; a="241042763" X-IronPort-AV: E=Sophos;i="6.23,243,1770562800"; d="scan'208";a="241042763" Received: from gmgwuk01.global.fujitsu.com ([172.187.114.235]) by esa3.hc1455-7.c3s2.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2026 17:15:10 +0900 Received: from az2uksmgm4.o.css.fujitsu.com (unknown [10.151.22.201]) (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) by gmgwuk01.global.fujitsu.com (Postfix) with ESMTPS id B93C7C0023C; Tue, 19 May 2026 08:15:11 +0000 (UTC) Received: from az2nlsmom4.fujitsu.com (az2nlsmom4.o.css.fujitsu.com [10.150.26.201]) (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) by az2uksmgm4.o.css.fujitsu.com (Postfix) with ESMTPS id 70CA31400109; Tue, 19 May 2026 08:15:11 +0000 (UTC) Received: from dhcp-portal (unknown [10.172.107.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by az2nlsmom4.fujitsu.com (Postfix) with ESMTPS id DF3772000292; Tue, 19 May 2026 08:15:09 +0000 (UTC) Received: from isar2.ecs00.fujitsu.local (unknown [10.172.183.27]) by dhcp-portal (Postfix) with ESMTP id 15594608BF; Tue, 19 May 2026 10:15:09 +0200 (CEST) From: Tomasz Wolski To: icheng@nvidia.com Cc: alison.schofield@intel.com, ardb@kernel.org, benjamin.cheatham@amd.com, dan.j.williams@intel.com, dave.jiang@intel.com, jonathan.cameron@huawei.com, linux-cxl@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, nvdimm@lists.linux.dev, smita.koralahallichannabasappa@amd.com, tomasz.wolski@fujitsu.com Subject: Re: [PATCH] dax/bus: Upgrade resource conflict message to dev_err() in alloc_dax_region() Date: Tue, 19 May 2026 10:15:06 +0200 Message-Id: <20260519081506.17283-1-tomasz.wolski@fujitsu.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hello Richard, Thanks for your feedback >> Did you run into any kind of error or even machine crashing from this ? No, I haven't hit this error path in practice. On systems I've tested, the deferral logic in hmem_register_cxl_device() correctly drops ranges that CXL claims >> btw, though I am not against the change, I don't think this is a fix, maybe you can consider to remove the Fixes tag. Agreed, I'll drop the tag in v2. Best regards, Tomasz