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[88.21.201.17]) by smtp.gmail.com with ESMTPSA id j123sm2316078wmb.1.2021.03.18.06.14.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 18 Mar 2021 06:14:38 -0700 (PDT) Subject: Re: [PATCH v2 3/3] target/arm: Restrict v7A TCG cpus to TCG accel To: Claudio Fontana , Andrew Jones , Peter Maydell References: <20210221222617.2579610-1-f4bug@amsat.org> <20210221222617.2579610-4-f4bug@amsat.org> <8a302c84-b69c-b0c2-de45-607dd1f686a6@redhat.com> <28540fd5-3bd3-30d7-624d-da21d0f39806@redhat.com> <20210318123727.vfjaecuklzicmprn@kamzik.brq.redhat.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: Date: Thu, 18 Mar 2021 14:14:37 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.249, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-arm , =?UTF-8?Q?Alex_Benn=c3=a9e?= , "Dr. David Alan Gilbert" , QEMU Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 3/18/21 1:50 PM, Claudio Fontana wrote: > On 3/18/21 1:37 PM, Andrew Jones wrote: >> On Thu, Mar 18, 2021 at 11:38:51AM +0000, Peter Maydell wrote: >>> On Thu, 18 Mar 2021 at 11:31, Philippe Mathieu-Daudé wrote: >>>> I tend to agree. The problem is for the running VMs started before >>>> 82bf7ae84ce (so up to any fork based on v5.2). I don't know what >>>> the forks are supposed to do with the running VMs if they want to >>>> migrate them to newer QEMU (or upgrade the host QEMU). >>> >>> Anybody with a Cortex-A15 KVM VM is just going to have to stay >>> with their pre-existing ancient hardware, their pre-existing >>> host kernel and their pre-existing QEMU binary. That's what >>> "we deprecated and then dropped support for this" means: >>> we no longer support running that kind of VM, so users who >>> were doing it need to either do something else instead, or >>> else just keep on going with the old versions they have. >>> >> >> I strongly agree. >> >> And, downstream-wise, I can't speak for anything but RHEL, but RHEL >> cannot have this problem. There are no 32-bit ARM builds for RHEL. Great then. Sorry for the confusion. > I don't see a strong issue with this either, there is no 32bit support for KVM ARM.