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[109.65.52.82]) by smtp.gmail.com with ESMTPSA id h11sm8701478qtr.38.2020.03.23.03.51.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2020 03:51:15 -0700 (PDT) Date: Mon, 23 Mar 2020 06:51:10 -0400 From: "Michael S. Tsirkin" To: Gerd Hoffmann Subject: Re: [PATCH 00/13] microvm: add acpi support Message-ID: <20200323065050-mutt-send-email-mst@kernel.org> References: <20200319080117.7725-1-kraxel@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200319080117.7725-1-kraxel@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 63.128.21.74 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: Eduardo Habkost , Sergio Lopez , qemu-devel@nongnu.org, Paolo Bonzini , Igor Mammedov , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Mar 19, 2020 at 09:01:04AM +0100, Gerd Hoffmann wrote: > I know that not supporting ACPI in microvm is intentional. If you still > don't want ACPI this is perfectly fine, you can use the usual -no-acpi > switch to toggle ACPI support. >=20 > These are the advantages you are going to loose then: >=20 > (1) virtio-mmio device discovery without command line hacks (tweaking > the command line is a problem when not using direct kernel boot). > (2) Better IO-APIC support, we can use IRQ lines 16-23. > (3) ACPI power button (aka powerdown request) works. > (4) machine poweroff (aka S5 state) works. What is the cost though? How do boot times compare? > Together with seabios patches for virtio-mmio support this allows to > boot standard fedora images (cloud, coreos, workstation live) with the > microvm machine type. >=20 > cheers, > Gerd >=20 > Gerd Hoffmann (13): > acpi: make build_madt() more generic. > acpi: factor out acpi_dsdt_add_fw_cfg() > microvm: add isa-acpi device > microvm: add minimal acpi support. > microvm: add acpi_dsdt_add_virtio() for x86 > microvm: disable virtio-mmio cmdline hack > [testing] seabios: update submodule to experimental microvm branch > [testing] seabios: update config & build rules > [testing] seabios: update binaries to experimental microvm branch > microvm/acpi: add rtc > microvm/acpi: add serial > microvm: make virtio irq base runtime configurable > microvm/acpi: use GSI 16-23 for virtio >=20 > include/hw/i386/microvm.h | 8 +- > hw/acpi/isa-acpi.c | 114 +++++++++++++++ > hw/i386/acpi-build.c | 278 +++++++++++++++++++++++++++++------- > hw/i386/microvm.c | 32 +++-- > hw/acpi/Makefile.objs | 1 + > pc-bios/bios-256k.bin | Bin 262144 -> 262144 bytes > pc-bios/bios-microvm.bin | Bin 65536 -> 131072 bytes > pc-bios/bios.bin | Bin 131072 -> 131072 bytes > roms/Makefile | 5 +- > roms/config.seabios-128k | 2 + > roms/config.seabios-microvm | 25 ++++ > roms/seabios | 2 +- > 12 files changed, 403 insertions(+), 64 deletions(-) > create mode 100644 hw/acpi/isa-acpi.c > create mode 100644 roms/config.seabios-microvm >=20 > --=20 > 2.18.2