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From: "Michael S. Tsirkin" <mst@redhat.com>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>,
	Eduardo Habkost <ehabkost@redhat.com>,
	Eric Auger <eric.auger@redhat.com>,
	Richard Henderson <richard.henderson@linaro.org>,
	Shannon Zhao <shannon.zhaosl@gmail.com>,
	qemu-arm@nongnu.org, Igor Mammedov <imammedo@redhat.com>,
	Ani Sinha <ani@anisinha.ca>, Paolo Bonzini <pbonzini@redhat.com>
Subject: [PULL 35/57] acpi: madt: arm/x86: use acpi_table_begin()/acpi_table_end() instead of build_header()
Date: Tue, 5 Oct 2021 12:03:23 -0400	[thread overview]
Message-ID: <20211005155946.513818-36-mst@redhat.com> (raw)
In-Reply-To: <20211005155946.513818-1-mst@redhat.com>

From: Igor Mammedov <imammedo@redhat.com>

it replaces error-prone pointer arithmetic for build_header() API,
with 2 calls to start and finish table creation,
which hides offsets magic from API user.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20210924122802.1455362-22-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/hw/acpi/acpi-defs.h |  9 ---------
 hw/arm/virt-acpi-build.c    | 19 +++++++++++--------
 hw/i386/acpi-common.c       | 19 +++++++++++--------
 3 files changed, 22 insertions(+), 25 deletions(-)

diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index c4f0a202e8..c7fa5caa06 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -176,15 +176,6 @@ typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1;
 #define ACPI_DUAL_PIC                0
 #define ACPI_MULTIPLE_APIC           1
 
-/* Master MADT */
-
-struct AcpiMultipleApicTable {
-    ACPI_TABLE_HEADER_DEF     /* ACPI common table header */
-    uint32_t local_apic_address;     /* Physical address of local APIC */
-    uint32_t flags;
-} QEMU_PACKED;
-typedef struct AcpiMultipleApicTable AcpiMultipleApicTable;
-
 /* Values for Type in APIC sub-headers */
 
 #define ACPI_APIC_PROCESSOR          0
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 6ba02cf281..e3bdcd44e8 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -567,19 +567,26 @@ build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
                  vms->oem_table_id);
 }
 
-/* MADT */
+/*
+ * ACPI spec, Revision 5.0
+ * 5.2.12 Multiple APIC Description Table (MADT)
+ */
 static void
 build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 {
     VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
-    int madt_start = table_data->len;
     const MemMapEntry *memmap = vms->memmap;
     const int *irqmap = vms->irqmap;
     AcpiMadtGenericDistributor *gicd;
     AcpiMadtGenericMsiFrame *gic_msi;
     int i;
+    AcpiTable table = { .sig = "APIC", .rev = 3, .oem_id = vms->oem_id,
+                        .oem_table_id = vms->oem_table_id };
 
-    acpi_data_push(table_data, sizeof(AcpiMultipleApicTable));
+    acpi_table_begin(&table, table_data);
+    /* Local Interrupt Controller Address */
+    build_append_int_noprefix(table_data, 0, 4);
+    build_append_int_noprefix(table_data, 0, 4); /* Flags */
 
     gicd = acpi_data_push(table_data, sizeof *gicd);
     gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR;
@@ -650,11 +657,7 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
         gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS);
         gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE);
     }
-
-    build_header(linker, table_data,
-                 (void *)(table_data->data + madt_start), "APIC",
-                 table_data->len - madt_start, 3, vms->oem_id,
-                 vms->oem_table_id);
+    acpi_table_end(linker, &table);
 }
 
 /* FADT */
diff --git a/hw/i386/acpi-common.c b/hw/i386/acpi-common.c
index 1f5947fcf9..a0cde1d874 100644
--- a/hw/i386/acpi-common.c
+++ b/hw/i386/acpi-common.c
@@ -71,24 +71,29 @@ void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
     }
 }
 
+/*
+ * ACPI spec, Revision 1.0b
+ * 5.2.8 Multiple APIC Description Table
+ */
 void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
                      X86MachineState *x86ms, AcpiDeviceIf *adev,
                      const char *oem_id, const char *oem_table_id)
 {
     MachineClass *mc = MACHINE_GET_CLASS(x86ms);
     const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms));
-    int madt_start = table_data->len;
     AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev);
     bool x2apic_mode = false;
 
-    AcpiMultipleApicTable *madt;
     AcpiMadtIoApic *io_apic;
     AcpiMadtIntsrcovr *intsrcovr;
     int i;
+    AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = oem_id,
+                        .oem_table_id = oem_table_id };
 
-    madt = acpi_data_push(table_data, sizeof *madt);
-    madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
-    madt->flags = cpu_to_le32(1);
+    acpi_table_begin(&table, table_data);
+    /* Local APIC Address */
+    build_append_int_noprefix(table_data, APIC_DEFAULT_ADDRESS, 4);
+    build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */
 
     for (i = 0; i < apic_ids->len; i++) {
         adevc->madt_cpu(adev, i, apic_ids, table_data);
@@ -156,8 +161,6 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
         local_nmi->lint         = 1; /* ACPI_LINT1 */
     }
 
-    build_header(linker, table_data,
-                 (void *)(table_data->data + madt_start), "APIC",
-                 table_data->len - madt_start, 1, oem_id, oem_table_id);
+    acpi_table_end(linker, &table);
 }
 
-- 
MST



  parent reply	other threads:[~2021-10-05 16:58 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-05 16:00 [PULL 00/57] pc,pci,virtio: features, fixes Michael S. Tsirkin
2021-10-05 16:00 ` [PULL 01/57] hw/virtio: Acquire RCU read lock in virtqueue_packed_drop_all() Michael S. Tsirkin
2021-10-05 16:00 ` [PULL 02/57] hw/virtio: Have virtqueue_get_avail_bytes() pass caches arg to callees Michael S. Tsirkin
2021-10-05 16:00 ` [PULL 03/57] vhost-vdpa: open device fd in net_init_vhost_vdpa() Michael S. Tsirkin
2021-10-05 16:00 ` [PULL 04/57] vhost-vdpa: classify one time request Michael S. Tsirkin
2021-10-05 16:00 ` [PULL 05/57] vhost-vdpa: prepare for the multiqueue support Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 06/57] vhost-vdpa: let net_vhost_vdpa_init() returns NetClientState * Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 07/57] net: introduce control client Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 08/57] vhost-net: control virtqueue support Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 09/57] virtio-net: use "queue_pairs" instead of "queues" when possible Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 10/57] vhost: record the last virtqueue index for the virtio device Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 11/57] virtio-net: vhost control virtqueue support Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 12/57] vhost-vdpa: multiqueue support Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 13/57] vhost-vsock: fix migration issue when seqpacket is supported Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 14/57] vhost-vsock: handle common features in vhost-vsock-common Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 15/57] acpi: add helper routines to initialize ACPI tables Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 16/57] acpi: build_rsdt: use acpi_table_begin()/acpi_table_end() instead of build_header() Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 17/57] acpi: build_xsdt: " Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 18/57] acpi: build_slit: " Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 19/57] acpi: build_fadt: " Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 20/57] acpi: build_tpm2: " Michael S. Tsirkin
2021-10-05 16:01 ` [PULL 21/57] acpi: acpi_build_hest: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 22/57] acpi: build_mcfg: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 23/57] acpi: build_hmat: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 24/57] acpi: nvdimm_build_nfit: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 25/57] acpi: nvdimm_build_ssdt: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 26/57] acpi: vmgenid_build_acpi: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 27/57] acpi: x86: build_dsdt: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 28/57] acpi: build_hpet: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 29/57] acpi: build_tpm_tcpa: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 30/57] acpi: arm/x86: build_srat: " Michael S. Tsirkin
2021-10-05 16:02 ` [PULL 31/57] acpi: use build_append_int_noprefix() API to compose SRAT table Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 32/57] acpi: build_dmar_q35: use acpi_table_begin()/acpi_table_end() instead of build_header() Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 33/57] acpi: build_waet: " Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 34/57] acpi: build_amd_iommu: " Michael S. Tsirkin
2021-10-05 16:03 ` Michael S. Tsirkin [this message]
2021-10-05 16:03 ` [PULL 36/57] acpi: x86: remove dead code Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 37/57] acpi: x86: set enabled when composing _MAT entries Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 38/57] acpi: x86: madt: use build_append_int_noprefix() API to compose MADT table Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 39/57] acpi: arm/virt: " Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 40/57] acpi: build_dsdt_microvm: use acpi_table_begin()/acpi_table_end() instead of build_header() Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 41/57] acpi: arm: virt: build_dsdt: " Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 42/57] acpi: arm: virt: build_iort: " Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 43/57] acpi: arm/virt: convert build_iort() to endian agnostic build_append_FOO() API Michael S. Tsirkin
2021-10-05 16:03 ` [PULL 44/57] acpi: arm/virt: build_spcr: fix invalid cast Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 45/57] acpi: arm/virt: build_spcr: use acpi_table_begin()/acpi_table_end() instead of build_header() Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 46/57] acpi: arm/virt: build_gtdt: " Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 47/57] acpi: build_facs: use build_append_int_noprefix() API to compose table Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 48/57] acpi: remove no longer used build_header() Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 49/57] acpi: AcpiGenericAddress no longer used to map/access fields of MMIO, drop packed attribute Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 50/57] bios-tables-test: allow changes in DSDT ACPI tables for q35 Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 51/57] hw/i386/acpi: fix conflicting IO address range for acpi pci hotplug in q35 Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 52/57] bios-tables-test: Update ACPI DSDT table golden blobs for q35 Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 53/57] virtio-balloon: Fix page-poison subsection name Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 54/57] nvdimm: release the correct device list Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 55/57] hw/i386/amd_iommu: Rename amdviPCI TypeInfo Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 56/57] hw/i386/amd_iommu: Rename SysBus specific functions as amdvi_sysbus_X() Michael S. Tsirkin
2021-10-05 16:04 ` [PULL 57/57] hw/i386/amd_iommu: Add description/category to TYPE_AMD_IOMMU_PCI Michael S. Tsirkin
2021-10-05 17:21 ` [PULL 00/57] pc,pci,virtio: features, fixes Richard Henderson
2021-10-05 21:32   ` Michael S. Tsirkin
2021-10-05 23:36     ` Richard Henderson
2021-10-11  3:32     ` Jason Wang

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