From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2193FC001B0 for ; Thu, 10 Aug 2023 11:00:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qU3OC-0000LL-Cl; Thu, 10 Aug 2023 06:59:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qU3OA-0000L6-Cx for qemu-devel@nongnu.org; Thu, 10 Aug 2023 06:59:34 -0400 Received: from mail-wr1-x434.google.com ([2a00:1450:4864:20::434]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qU3O8-00037I-2P for qemu-devel@nongnu.org; Thu, 10 Aug 2023 06:59:34 -0400 Received: by mail-wr1-x434.google.com with SMTP id ffacd0b85a97d-317dcdae365so712278f8f.1 for ; Thu, 10 Aug 2023 03:59:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1691665170; x=1692269970; h=content-transfer-encoding:in-reply-to:from:cc:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=2HvHCP70ZHroKOL6EwLKWvMZd+U+3ZMYzGi0DXS7wFM=; b=Q377VuwZ/wWM+jdBkTgV98fdZAZp5YvodZLphvBMkKSF1ss0bqTCVYDz3n6aYrdqVL EPBrzR/9FbiZvpeEeVlZ3pcUDn7/NTnWtxRA/KClNy/4oNd7JIVRGknNQ7yX4+bGg5yh guOKnAHdqnCOnm77Wf00v4/GcD+C/0oBFzQUW9nudEN7EDptyReWTVn7vrlNS0PEXLlk +72dqA0y/JXyKLpEgVXgataG5/Dw0RjuLPVVLP414d454sSvz4yKCQCdZPmNKy5apEtk 9q/hyOFOVvCsVkLEaZNq3lRGNBDj9sirpSdK96X/FsyjgcGtNIBHIFb7VV0SW7oFn4I7 aIGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691665170; x=1692269970; h=content-transfer-encoding:in-reply-to:from:cc:references:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=2HvHCP70ZHroKOL6EwLKWvMZd+U+3ZMYzGi0DXS7wFM=; b=K+YPO1IeNukaNcu8uAEIdHlJvlLVR25fVI2C64HQWdvp6RHbBW4p4aByna6VnyAh8/ ObRJPiHcEWkGQwIBLxNKcZJMXF+MFOHQQVM5C1G7X7+FFT6fDdsndXGnmP556c2H1fHl J0AcGBCymJc9fMCW06X582LlpeRmfmfX7g5s+AnUpoDB8nzrhe6U/PEqvKXv6ft+DI69 s3FZ53ulWiTwfw3Ek6yINnfyF7TG0X2r1oNdRVsI9nEK0Jak+pxPC3kppAzFaoRp5hdS vsp4DD6j0Y7FQpxsCtAvYzmXmyE9RtfUN9qjnQnIJvmtn3nzYNyXOrmKGqZtq0tv2Apy adwg== X-Gm-Message-State: AOJu0YwieJzZSZgaayLcAtWv7Qm3h1K4Wjt28aL0IEC9HdQDwqXsPmwY /kV3U9bwjp+j1iKB0thZ7BPEWfnCKczUSOIJQUQ= X-Google-Smtp-Source: AGHT+IFWbfY0XhDgZxv91Mz/b9gzUqHht1jv83opgM0TyXcEvS/V6MrGrPJ7vV6aK1rNaMGBcOMSyQ== X-Received: by 2002:a5d:6889:0:b0:317:ef6:89a7 with SMTP id h9-20020a5d6889000000b003170ef689a7mr1679131wru.27.1691665170536; Thu, 10 Aug 2023 03:59:30 -0700 (PDT) Received: from [192.168.69.115] ([176.176.158.65]) by smtp.gmail.com with ESMTPSA id k7-20020adfe3c7000000b003176c6e87b1sm1797361wrm.81.2023.08.10.03.59.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 10 Aug 2023 03:59:30 -0700 (PDT) Message-ID: Date: Thu, 10 Aug 2023 12:59:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: CXL volatile memory is not listed Content-Language: en-US To: Maverickk 78 , Igor Mammedov , David Hildenbrand References: Cc: QEMU Developers , Jonathan Cameron From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::434; envelope-from=philmd@linaro.org; helo=mail-wr1-x434.google.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-2.156, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hi, Cc'ing Igor and David. On 9/8/23 00:51, Maverickk 78 wrote: > Hello, > > I am running qemu-system-x86_64 > > qemu-system-x86_64 --version > QEMU emulator version 8.0.92 (v8.1.0-rc2-80-g0450cf0897) > > qemu-system-x86_64 \ > -m 2G,slots=4,maxmem=4G \ > -smp 4 \ > -machine type=q35,accel=kvm,cxl=on \ > -enable-kvm \ > -nographic \ > -device pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52 \ > -device cxl-rp,id=rp0,bus=cxl.0,chassis=0,port=0,slot=0 \ > -object memory-backend-file,id=mem0,mem-path=/tmp/mem0,size=1G,share=true \ > -device cxl-type3,bus=rp0,volatile-memdev=mem0,id=cxl-mem0 \ > -M cxl-fmw.0.targets.0=cxl.0,cxl-fmw.0.size=1G > > > I was expecting the CXL memory to be listed in "System Ram", the lsmem > shows only 2G memory which is System RAM, it's not listing the CXL > memory. Sounds like a bug. Do you mind reporting at https://gitlab.com/qemu-project/qemu/-/issues? Thanks, Phil. > Do I need to pass any particular parameter in the kernel command line? > > Is there any documentation available? I followed the inputs provided in > > https://lore.kernel.org/linux-mm/Y+CSOeHVLKudN0A6@kroah.com/T/ > > Is there any documentation/blog listed? >