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Tsirkin" , Ani Sinha , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , Eduardo Habkost , Marcel Apfelbaum Subject: [PATCH-for-9.1 v2 17/21] hw/i386/pc: Remove PCMachineClass::rsdp_in_ram Date: Wed, 27 Mar 2024 10:51:19 +0100 Message-ID: <20240327095124.73639-18-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240327095124.73639-1-philmd@linaro.org> References: <20240327095124.73639-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::630; envelope-from=philmd@linaro.org; helo=mail-ej1-x630.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1711533394167100004 PCMachineClass::rsdp_in_ram was only used by the pc-i440fx-2.2 machine, which got removed. It is now always true. Remove it, simplifying acpi_setup(). Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth Message-Id: <20240305134221.30924-15-philmd@linaro.org> Reviewed-by: Zhao Liu --- include/hw/i386/pc.h | 1 - hw/i386/acpi-build.c | 35 ++++------------------------------- hw/i386/pc.c | 1 - 3 files changed, 4 insertions(+), 33 deletions(-) diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 10a8ffa0de..96ccb4583f 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -100,7 +100,6 @@ struct PCMachineClass { =20 /* ACPI compat: */ bool has_acpi_build; - bool rsdp_in_ram; unsigned acpi_data_size; int pci_root_uid; =20 diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index ab2d4d8dcb..ed0adb0e82 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2495,7 +2495,6 @@ static void acpi_build(AcpiBuildTables *tables, MachineState *machine) { PCMachineState *pcms =3D PC_MACHINE(machine); - PCMachineClass *pcmc =3D PC_MACHINE_GET_CLASS(pcms); X86MachineState *x86ms =3D X86_MACHINE(machine); DeviceState *iommu =3D pcms->iommu; GArray *table_offsets; @@ -2667,16 +2666,6 @@ void acpi_build(AcpiBuildTables *tables, MachineStat= e *machine) .rsdt_tbl_offset =3D &rsdt, }; build_rsdp(tables->rsdp, tables->linker, &rsdp_data); - if (!pcmc->rsdp_in_ram) { - /* We used to allocate some extra space for RSDP revision 2 but - * only used the RSDP revision 0 space. The extra bytes were - * zeroed out and not used. - * Here we continue wasting those extra 16 bytes to make sure = we - * don't break migration for machine types 2.2 and older due to - * RSDP blob size mismatch. - */ - build_append_int_noprefix(tables->rsdp, 0, 16); - } } =20 /* We'll expose it all to Guest so we want to reduce @@ -2755,7 +2744,6 @@ static const VMStateDescription vmstate_acpi_build = =3D { void acpi_setup(void) { PCMachineState *pcms =3D PC_MACHINE(qdev_get_machine()); - PCMachineClass *pcmc =3D PC_MACHINE_GET_CLASS(pcms); X86MachineState *x86ms =3D X86_MACHINE(pcms); AcpiBuildTables tables; AcpiBuildState *build_state; @@ -2817,25 +2805,10 @@ void acpi_setup(void) tables.vmgenid); } =20 - if (!pcmc->rsdp_in_ram) { - /* - * Keep for compatibility with old machine types. - * Though RSDP is small, its contents isn't immutable, so - * we'll update it along with the rest of tables on guest access. - */ - uint32_t rsdp_size =3D acpi_data_len(tables.rsdp); - - build_state->rsdp =3D g_memdup(tables.rsdp->data, rsdp_size); - fw_cfg_add_file_callback(x86ms->fw_cfg, ACPI_BUILD_RSDP_FILE, - acpi_build_update, NULL, build_state, - build_state->rsdp, rsdp_size, true); - build_state->rsdp_mr =3D NULL; - } else { - build_state->rsdp =3D NULL; - build_state->rsdp_mr =3D acpi_add_rom_blob(acpi_build_update, - build_state, tables.rsdp, - ACPI_BUILD_RSDP_FILE); - } + build_state->rsdp =3D NULL; + build_state->rsdp_mr =3D acpi_add_rom_blob(acpi_build_update, + build_state, tables.rsdp, + ACPI_BUILD_RSDP_FILE); =20 qemu_register_reset(acpi_build_reset, build_state); acpi_build_reset(build_state); diff --git a/hw/i386/pc.c b/hw/i386/pc.c index ae2d220269..5fd83010ba 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1743,7 +1743,6 @@ static void pc_machine_class_init(ObjectClass *oc, vo= id *data) =20 pcmc->pci_enabled =3D true; pcmc->has_acpi_build =3D true; - pcmc->rsdp_in_ram =3D true; pcmc->smbios_defaults =3D true; pcmc->gigabyte_align =3D true; pcmc->has_reserved_memory =3D true; --=20 2.41.0