From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org, Thomas Huth <thuth@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
qemu-riscv@nongnu.org, "David Hildenbrand" <david@redhat.com>,
"Igor Mammedov" <imammedo@redhat.com>,
kvm@vger.kernel.org, qemu-ppc@nongnu.org, qemu-arm@nongnu.org,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Zhao Liu" <zhao1.liu@intel.com>,
"Ani Sinha" <anisinha@redhat.com>,
"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Eduardo Habkost" <eduardo@habkost.net>
Subject: [PATCH v4 18/22] hw/i386/pc: Remove PCMachineClass::rsdp_in_ram
Date: Tue, 16 Apr 2024 20:59:34 +0200 [thread overview]
Message-ID: <20240416185939.37984-19-philmd@linaro.org> (raw)
In-Reply-To: <20240416185939.37984-1-philmd@linaro.org>
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-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
---
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 {
/* ACPI compat: */
bool has_acpi_build;
- bool rsdp_in_ram;
unsigned acpi_data_size;
int pci_root_uid;
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 = PC_MACHINE(machine);
- PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
X86MachineState *x86ms = X86_MACHINE(machine);
DeviceState *iommu = pcms->iommu;
GArray *table_offsets;
@@ -2667,16 +2666,6 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
.rsdt_tbl_offset = &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);
- }
}
/* We'll expose it all to Guest so we want to reduce
@@ -2755,7 +2744,6 @@ static const VMStateDescription vmstate_acpi_build = {
void acpi_setup(void)
{
PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
- PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
X86MachineState *x86ms = X86_MACHINE(pcms);
AcpiBuildTables tables;
AcpiBuildState *build_state;
@@ -2817,25 +2805,10 @@ void acpi_setup(void)
tables.vmgenid);
}
- 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 = acpi_data_len(tables.rsdp);
-
- build_state->rsdp = 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 = NULL;
- } else {
- build_state->rsdp = NULL;
- build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update,
- build_state, tables.rsdp,
- ACPI_BUILD_RSDP_FILE);
- }
+ build_state->rsdp = NULL;
+ build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update,
+ build_state, tables.rsdp,
+ ACPI_BUILD_RSDP_FILE);
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 c4a7885a3b..a1b0e94523 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1745,7 +1745,6 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
pcmc->pci_enabled = true;
pcmc->has_acpi_build = true;
- pcmc->rsdp_in_ram = true;
pcmc->smbios_defaults = true;
pcmc->gigabyte_align = true;
pcmc->has_reserved_memory = true;
--
2.41.0
next prev parent reply other threads:[~2024-04-16 19:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 18:59 [PATCH v4 00/22] hw/i386: Remove deprecated pc-i440fx-2.0 -> 2.3 machines Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 01/22] hw/i386/pc: Deprecate 2.4 to 2.12 pc-i440fx machines Philippe Mathieu-Daudé
2024-05-02 12:08 ` Daniel P. Berrangé
2024-04-16 18:59 ` [PATCH v4 02/22] hw/i386/pc: Remove deprecated pc-i440fx-2.0 machine Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 03/22] hw/usb/hcd-xhci: Remove XHCI_FLAG_FORCE_PCIE_ENDCAP flag Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 04/22] hw/usb/hcd-xhci: Remove XHCI_FLAG_SS_FIRST flag Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 05/22] hw/i386/acpi: Remove PCMachineClass::legacy_acpi_table_size Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 06/22] hw/acpi/ich9: Remove 'memory-hotplug-support' property Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 07/22] hw/acpi/ich9: Remove dead code related to 'acpi_memory_hotplug' Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 08/22] hw/i386/pc: Remove deprecated pc-i440fx-2.1 machine Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 09/22] target/i386/kvm: Remove x86_cpu_change_kvm_default() and 'kvm-cpu.h' Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 10/22] hw/i386/pc: Remove PCMachineClass::smbios_uuid_encoded Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 11/22] hw/smbios: Remove 'uuid_encoded' argument from smbios_set_defaults() Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 12/22] hw/smbios: Remove 'smbios_uuid_encoded', simplify smbios_encode_uuid() Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 13/22] hw/i386/pc: Remove PCMachineClass::enforce_aligned_dimm Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 14/22] hw/mem/pc-dimm: Remove legacy_align argument from pc_dimm_pre_plug() Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 15/22] hw/mem/memory-device: Remove legacy_align from memory_device_pre_plug() Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 16/22] hw/i386/pc: Remove deprecated pc-i440fx-2.2 machine Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 17/22] hw/i386/pc: Remove PCMachineClass::resizable_acpi_blob Philippe Mathieu-Daudé
2024-04-16 18:59 ` Philippe Mathieu-Daudé [this message]
2024-04-16 18:59 ` [PATCH v4 19/22] hw/i386/acpi: Remove AcpiBuildState::rsdp field Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 20/22] hw/i386/pc: Remove deprecated pc-i440fx-2.3 machine Philippe Mathieu-Daudé
2024-05-02 12:13 ` Daniel P. Berrangé
2024-04-16 18:59 ` [PATCH v4 21/22] target/i386: Remove X86CPU::kvm_no_smi_migration field Philippe Mathieu-Daudé
2024-04-16 18:59 ` [PATCH v4 22/22] hw/i386/pc: Replace PCMachineClass::acpi_data_size by PC_ACPI_DATA_SIZE Philippe Mathieu-Daudé
2024-04-24 8:44 ` [PATCH v4 00/22] hw/i386: Remove deprecated pc-i440fx-2.0 -> 2.3 machines Philippe Mathieu-Daudé
2024-05-06 14:29 ` Philippe Mathieu-Daudé
2024-05-13 13:18 ` Philippe Mathieu-Daudé
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