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Tsirkin" To: Li Chen Cc: Peter Maydell , Shannon Zhao , Igor Mammedov , Ani Sinha , Eduardo Habkost , Marcel Apfelbaum , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Yanan Wang , Zhao Liu , Song Gao , Jiaxun Yang , Sunil V L , Palmer Dabbelt , Alistair Francis , Weiwei Li , qemu-arm , qemu-devel , qemu-riscv , Li Chen Subject: Re: [PATCH REPOST v4 0/4] acpi: Add machine option to disable SPCR table Message-ID: <20250530081034-mutt-send-email-mst@kernel.org> References: <20250528105404.457729-1-me@linux.beauty> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250528105404.457729-1-me@linux.beauty> Received-SPF: pass client-ip=170.10.129.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -49 X-Spam_score: -5.0 X-Spam_bar: ----- X-Spam_report: (-5.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.907, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 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 Wed, May 28, 2025 at 06:53:34PM +0800, Li Chen wrote: > From: Li Chen > > (REPOST because the previous post failed to send to qemu-devel/qemu-riscv/qemu-arm, > see https://lore.kernel.org/qemu-devel/1971648603b.dce1f5d22901195.6702025346547333607@linux.beauty/T/#u) > > This series introduces a new machine option, spcr=on|off, allowing users > to disable the ACPI SPCR (Serial Port Console Redirection) table. > By default, SPCR is enabled. Disabling it can help ensure that the guest's > console behavior is determined solely by kernel command-line parameters > on arch like arm64, avoiding unintended serial console configurations imposed > by firmware. > > Also add tests on AArch64 and RISC-V virt machines using TCG and UEFI boot. > > Changes since v3: > - Add Reviewed-by from Sunil V L for patch 1, 3, and 4. > - rename enable_spcr to acpi_spcr_enabled as suggested by Philippe Mathieu-Daudé. > Changes since v2: > - Omit UART device from DSDT and SPCR construction if no serial device is present, > as suggested by Philippe Mathieu-Daudé. > - Add Reviewed-by from Gavin Shan for the first patch and fix style issue. > > Changes since v1: > - Add bios-tables-test for RISC-V and ARM as suggested by > - Add Acked-by from Michael S. Tsirkin for the first patch > - Add Reviewed-by from Bibo Mao for the first patch > > Li Chen (4): > acpi: Add machine option to disable SPCR table > tests/qtest/bios-tables-test: Add test for disabling SPCR on AArch64 > tests/qtest/bios-tables-test: Add test for disabling SPCR on RISC-V > acpi/virt: suppress UART device & SPCR when guest has no serial > hardware Who's merging this? > hw/arm/virt-acpi-build.c | 18 ++++++++----- > hw/core/machine.c | 22 ++++++++++++++++ > hw/loongarch/virt-acpi-build.c | 4 ++- > hw/riscv/virt-acpi-build.c | 10 ++++++-- > include/hw/boards.h | 1 + > include/system/system.h | 2 ++ > qemu-options.hx | 5 ++++ > system/vl.c | 5 ++++ > tests/qtest/bios-tables-test.c | 47 ++++++++++++++++++++++++++++++++-- > 9 files changed, 103 insertions(+), 11 deletions(-) > > -- > 2.49.0