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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47496b09bc4sm63736335e9.2.2025.10.23.07.36.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 23 Oct 2025 07:36:22 -0700 (PDT) Message-ID: Date: Thu, 23 Oct 2025 16:36:21 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] hw/i386/isapc.c: warn rather than reject modern x86 CPU models Content-Language: en-US To: Mark Cave-Ayland , imammedo@redhat.com, mst@redhat.com, marcel.apfelbaum@gmail.com, pbonzini@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, qemu-devel@nongnu.org References: <20251023142926.964718-1-mark.caveayland@nutanix.com> <20251023142926.964718-2-mark.caveayland@nutanix.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: <20251023142926.964718-2-mark.caveayland@nutanix.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=philmd@linaro.org; helo=mail-wm1-x32a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, 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 On 23/10/25 16:28, Mark Cave-Ayland wrote: > Commit e1e2909f8e ("hw/i386/pc_piix.c: restrict isapc machine to 32-bit CPUs") > restricted the isapc machine to 32-bit CPUs, but subsequent concern has been > expressed as to the effect this could have on users. > > The outcome of the latest discussion is that we should exercise more caution > and follow the official deprecation route, so instead of rejecting modern x86 > CPUs issue a deprecation warning but allow the user to continue. > > Signed-off-by: Mark Cave-Ayland > --- > hw/i386/isapc.c | 53 ++++++++++++++++++++----------------------------- > 1 file changed, 21 insertions(+), 32 deletions(-) Reviewed-by: Philippe Mathieu-Daudé