From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-o94.zoho.com (sender4-pp-o94.zoho.com [136.143.188.94]) (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 C9178329C73; Wed, 11 Mar 2026 11:15:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.94 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773227727; cv=pass; b=WQbTkgEqjpGlcfP2D2m+0+IbSKt9z2pd+5OVncfrfMR0uyDkiavAwjImi6tvGQVeNw526NUhvMZTfG9ZqmV9b9giLsaee8YKYkR/mkbTtCGlqoDy4fHJivnsY22FZPOM1TYGSVBGYe9Zq7183so4DhzzObIFB7K+Yv9ZdL1uRKw= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773227727; c=relaxed/simple; bh=oQ9AY8yyQkzL7aPCR0fgTcLgHESCks1t3Sdwu+AzGh0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=e1JDvhsHKemHTzr1h2e9cDv+Z0ik8XVZsrnHD4kOwR74O5ZJ5MWmaPEB8zG/NvYxuT5pR7P8MGfJKIFSZUfmnXfCf5Q++l64uSV/3AFE/09sUSX8EiwbDd9t2DOBx9qIx6ubRPbb+lZnfjNKdRjacI+xlmipYdd65kKMW4ZnRD0= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=zohomail.com; spf=pass smtp.mailfrom=zohomail.com; dkim=pass (1024-bit key) header.d=zohomail.com header.i=ming.li@zohomail.com header.b=eGW4Apr1; arc=pass smtp.client-ip=136.143.188.94 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=zohomail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zohomail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=zohomail.com header.i=ming.li@zohomail.com header.b="eGW4Apr1" ARC-Seal: i=1; a=rsa-sha256; t=1773227548; cv=none; d=zohomail.com; s=zohoarc; b=HKxz33duucArsuXaLMF4ks6fU68zQPb6ghOzK9209b/3w62NPIGDCrReEES6udOzt33Zus6Iq30+WsyNj/Z0a87/C6RyfmnorhZii9jtIZEeamCTHmrO7ncQZjh0tWxOCZramAlOD3+l4gARrfiI/BHb3XVgSrS+M9+YIOlwra4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1773227548; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=oQ9AY8yyQkzL7aPCR0fgTcLgHESCks1t3Sdwu+AzGh0=; b=CZ9vcYJv51xiFzecBEvxvhqMsrFBjUEVORlUpA9SvLOVHpl+eIaRM7P4JJVFGdg+PmQ45GHtVZnUAiGpqRuoZ1ZXxD966xkyGvubGLUeBxKKe5suc/v45Yhhq5jXGBxcO79iFW8Vy11FjqX5iVgYjIxbrxFt3nRR2J3t1CJHhzI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=zohomail.com; spf=pass smtp.mailfrom=ming.li@zohomail.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1773227548; s=zm2022; d=zohomail.com; i=ming.li@zohomail.com; h=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:Cc:Cc:References:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Feedback-ID:Message-Id:Reply-To; bh=oQ9AY8yyQkzL7aPCR0fgTcLgHESCks1t3Sdwu+AzGh0=; b=eGW4Apr16LkMDhre1XcCWZKnXfJRM+0jaVfkoTMvjP/hgcWGsTDrIDxRJgl8u386 UjGERYk1HFESsN43/+Bsk4tjnJpMlcVd4F4T2/E2DQxZEQ0x3J99dP0VPTQK+M7QHWO qvTp+vE6JIkYytMDrlr+DmN6yTahq7r3C2+LTvnM= Received: by mx.zohomail.com with SMTPS id 1773227548047581.9752619810631; Wed, 11 Mar 2026 04:12:28 -0700 (PDT) Message-ID: Date: Wed, 11 Mar 2026 19:12:24 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/7] cxl/pci: Hold memdev lock in cxl_event_trace_record() To: Dave Jiang , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Davidlohr Bueso , Jonathan Cameron , Alison Schofield , Vishal Verma , Ira Weiny , Dan Williams , Bjorn Helgaas , Ben Cheatham Cc: driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, linux-cxl@vger.kernel.org References: <20260310-fix_access_endpoint_without_drv_check-v1-0-94fe919a0b87@zohomail.com> <20260310-fix_access_endpoint_without_drv_check-v1-4-94fe919a0b87@zohomail.com> From: Li Ming In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Feedback-ID: rr0801122895a4557629c712e89d6db0220000d8bbfbdf6360d400233b83c4d462fba8db33537bc0b6ef679e77:zu080112279c22be99a643eb8349959d7b000029a178ff6205152be5157bae46d13b5c6509ae8f0002a87668:rf0801122d0553cd34dc0163f8c29826f9000041fbbc16fcdc759d254883a60042dcf9de77e9f69239fe2a4b7cf5fce23864:ZohoMail X-ZohoMailClient: External 在 2026/3/11 04:52, Dave Jiang 写道: > > On 3/10/26 8:57 AM, Li Ming wrote: >> This is a preparatory patch for the following changes. >> >> To enable endpoint validity checks in cxl_dpa_to_region(). >> cxl_dpa_to_region() has to require caller to hold CXL memdev lock to >> ensure the CXL memdev probing is completed. >> >> So holding the given CXL memdev lock before invoking cxl_dpa_to_region() >> in cxl_event_trace_record(). >> >> Suggested-by: Dan Williams >> Signed-off-by: Li Ming > With what Dan said, > Reviewed-by: Dave Jiang Thanks for review. Ming [snip]