On Thu, 31 Dec 2020 00:13:01 +0200
Marian Posteuca <poste...@mutex.one> wrote:
> Qemu's ACPI table generation sets the fields OEM ID and OEM table ID
> to "BOCHS " and "BXPCxxxx" where "xxxx" is replaced by the ACPI
> table name.
>
> Some games like Red Dead Redemption 2 seem to check the ACPI OEM ID
> and OEM table ID for the strings "BOCHS" and "BXPC" and if they are
> found, the game crashes(this may be an intentional detection
> mechanism to prevent playing the game in a virtualized environment).
>
> This patch allows you to override these default values.
>
> The feature can be used in this manner:
> qemu -machine oem-id=ABCDEF,oem-table-id=GHIJKLMN
>
> The oem-id string can be up to 6 bytes in size, and the
> oem-table-id string can be up to 8 bytes in size. If the string are
> smaller than their respective sizes they will be padded with space.
> If either of these parameters is not set, the current default values
> will be used for the one missing.
>
> Note that the the OEM Table ID field will not be extended with the
> name of the table, but will use either the default name or the user
> provided one.
>
> This does not affect the -acpitable option (for user-defined ACPI
> tables), which has precedence over -machine option.
overall looks good.
Please add a test case for it, see
tests/qtest/bios-tables-test.c for description how to do it
an/or at
"[PATCH v3 08/12] tests/acpi: allow updates for expected data files"
and follow up patches on the list.
Other than that, only my nitpicking below remains.
>
> Signed-off-by: Marian Posteuca <poste...@mutex.one>
PS:
here under ---
should be changelog if it's not v1
> ---
> hw/acpi/hmat.h | 3 +-
> hw/i386/acpi-common.h | 3 +-
> include/hw/acpi/acpi-defs.h | 2 +-
> include/hw/acpi/aml-build.h | 8 ++--
> include/hw/acpi/ghes.h | 3 +-
> include/hw/acpi/pci.h | 3 +-
> include/hw/acpi/vmgenid.h | 2 +-
> include/hw/arm/virt.h | 2 +
> include/hw/i386/microvm.h | 4 ++
> include/hw/i386/pc.h | 5 ++-
> include/hw/mem/nvdimm.h | 3 +-
> hw/acpi/aml-build.c | 43 +++++++++++--------
> hw/acpi/ghes.c | 5 ++-
> hw/acpi/hmat.c | 5 ++-
> hw/acpi/nvdimm.c | 18 +++++---
> hw/acpi/pci.c | 5 ++-
> hw/acpi/vmgenid.c | 4 +-
> hw/arm/virt-acpi-build.c | 40 +++++++++++------
> hw/arm/virt.c | 57 ++++++++++++++++++++++++
> hw/i386/acpi-build.c | 86 +++++++++++++++++++++++++------------
> hw/i386/acpi-common.c | 5 ++-
> hw/i386/acpi-microvm.c | 13 +++---
> hw/i386/microvm.c | 60 ++++++++++++++++++++++++++
> hw/i386/pc.c | 58 +++++++++++++++++++++++++
> 24 files changed, 344 insertions(+), 93 deletions(-)
>
> diff --git a/hw/acpi/hmat.h b/hw/acpi/hmat.h
> index e9031cac01..b57f0e7e80 100644
> --- a/hw/acpi/hmat.h
> +++ b/hw/acpi/hmat.h
> @@ -37,6 +37,7 @@
> */
> #define HMAT_PROXIMITY_INITIATOR_VALID 0x1
>
> -void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState
> *numa_state);
> +void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState
> *numa_state,
> + const char *oem_id, const char *oem_table_id);
>
> #endif
> diff --git a/hw/i386/acpi-common.h b/hw/i386/acpi-common.h
> index c30e461f18..b12cd73ea5 100644
> --- a/hw/i386/acpi-common.h
> +++ b/hw/i386/acpi-common.h
> @@ -9,6 +9,7 @@
> #define ACPI_BUILD_IOAPIC_ID 0x0
>
> void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
> - X86MachineState *x86ms, AcpiDeviceIf *adev);
> + X86MachineState *x86ms, AcpiDeviceIf *adev,
> + const char *oem_id, const char *oem_table_id);
>
> #endif
> diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
> index 38a42f409a..cf9f44299c 100644
> --- a/include/hw/acpi/acpi-defs.h
> +++ b/include/hw/acpi/acpi-defs.h
> @@ -41,7 +41,7 @@ enum {
> };
>
> typedef struct AcpiRsdpData {
> - uint8_t oem_id[6] QEMU_NONSTRING; /* OEM identification */
> + char *oem_id; /* OEM identification */
> uint8_t revision; /* Must be 0 for 1.0, 2 for 2.0 */
>
> unsigned *rsdt_tbl_offset;
> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> index e727bea1bc..e22983bba1 100644
> --- a/include/hw/acpi/aml-build.h
> +++ b/include/hw/acpi/aml-build.h
> @@ -8,7 +8,7 @@
> #define ACPI_BUILD_TABLE_MAX_SIZE 0x200000
>
> #define ACPI_BUILD_APPNAME6 "BOCHS "
> -#define ACPI_BUILD_APPNAME4 "BXPC"
> +#define ACPI_BUILD_APPNAME8 "BXPC "
>
> #define ACPI_BUILD_TABLE_FILE "etc/acpi/tables"
> #define ACPI_BUILD_RSDP_FILE "etc/acpi/rsdp"
> @@ -457,10 +457,12 @@ Aml *build_crs(PCIHostState *host, CrsRangeSet
> *range_set);
> void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
> uint64_t len, int node, MemoryAffinityFlags flags);
>
> -void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms);
> +void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
> + const char *oem_id, const char *oem_table_id);
>
> void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f,
> const char *oem_id, const char *oem_table_id);
>
> -void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog);
> +void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
> + const char *oem_id, const char *oem_table_id);
> #endif
> diff --git a/include/hw/acpi/ghes.h b/include/hw/acpi/ghes.h
> index 4ad025e09a..2ae8bc1ded 100644
> --- a/include/hw/acpi/ghes.h
> +++ b/include/hw/acpi/ghes.h
> @@ -67,7 +67,8 @@ typedef struct AcpiGhesState {
> } AcpiGhesState;
>
> void build_ghes_error_table(GArray *hardware_errors, BIOSLinker *linker);
> -void acpi_build_hest(GArray *table_data, BIOSLinker *linker);
> +void acpi_build_hest(GArray *table_data, BIOSLinker *linker,
> + const char *oem_id, const char *oem_table_id);
> void acpi_ghes_add_fw_cfg(AcpiGhesState *vms, FWCfgState *s,
> GArray *hardware_errors);
> int acpi_ghes_record_errors(uint8_t notify, uint64_t error_physical_addr);
> diff --git a/include/hw/acpi/pci.h b/include/hw/acpi/pci.h
> index bf2a3ed0ba..e514f179d8 100644
> --- a/include/hw/acpi/pci.h
> +++ b/include/hw/acpi/pci.h
> @@ -33,5 +33,6 @@ typedef struct AcpiMcfgInfo {
> uint32_t size;
> } AcpiMcfgInfo;
>
> -void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info);
> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
> + const char *oem_id, const char *oem_table_id);
> #endif
> diff --git a/include/hw/acpi/vmgenid.h b/include/hw/acpi/vmgenid.h
> index cb4ad37fc5..dc8bb3433e 100644
> --- a/include/hw/acpi/vmgenid.h
> +++ b/include/hw/acpi/vmgenid.h
> @@ -31,7 +31,7 @@ static inline Object *find_vmgenid_dev(void)
> }
>
> void vmgenid_build_acpi(VmGenIdState *vms, GArray *table_data, GArray *guid,
> - BIOSLinker *linker);
> + BIOSLinker *linker, const char *oem_id);
> void vmgenid_add_fw_cfg(VmGenIdState *vms, FWCfgState *s, GArray *guid);
>
> #endif
> diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
> index abf54fab49..bba87ab6a3 100644
> --- a/include/hw/arm/virt.h
> +++ b/include/hw/arm/virt.h
> @@ -164,6 +164,8 @@ struct VirtMachineState {
> DeviceState *acpi_dev;
> Notifier powerdown_notifier;
> PCIBus *bus;
> + char *oem_id;
> + char *oem_table_id;
> };
>
> #define VIRT_ECAM_ID(high) (high ? VIRT_HIGH_PCIE_ECAM : VIRT_PCIE_ECAM)
> diff --git a/include/hw/i386/microvm.h b/include/hw/i386/microvm.h
> index f25f837441..372b05774e 100644
> --- a/include/hw/i386/microvm.h
> +++ b/include/hw/i386/microvm.h
> @@ -76,6 +76,8 @@
> #define MICROVM_MACHINE_ISA_SERIAL "isa-serial"
> #define MICROVM_MACHINE_OPTION_ROMS "x-option-roms"
> #define MICROVM_MACHINE_AUTO_KERNEL_CMDLINE "auto-kernel-cmdline"
> +#define MICROVM_MACHINE_OEM_ID "oem-id"
> +#define MICROVM_MACHINE_OEM_TABLE_ID "oem-table-id"
>
> struct MicrovmMachineClass {
> X86MachineClass parent;
> @@ -104,6 +106,8 @@ struct MicrovmMachineState {
> Notifier machine_done;
> Notifier powerdown_req;
> struct GPEXConfig gpex;
> + char *oem_id;
> + char *oem_table_id;
> };
>
> #define TYPE_MICROVM_MACHINE MACHINE_TYPE_NAME("microvm")
> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> index 2aa8797c6e..5f93540a43 100644
> --- a/include/hw/i386/pc.h
> +++ b/include/hw/i386/pc.h
> @@ -45,6 +45,8 @@ typedef struct PCMachineState {
> bool pit_enabled;
> bool hpet_enabled;
> uint64_t max_fw_size;
> + char *oem_id;
> + char *oem_table_id;
>
> /* NUMA information: */
> uint64_t numa_nodes;
> @@ -62,7 +64,8 @@ typedef struct PCMachineState {
> #define PC_MACHINE_SATA "sata"
> #define PC_MACHINE_PIT "pit"
> #define PC_MACHINE_MAX_FW_SIZE "max-fw-size"
> -
> +#define PC_MACHINE_OEM_ID "oem-id"
> +#define PC_MACHINE_OEM_TABLE_ID "oem-table-id"
> /**
> * PCMachineClass:
> *
> diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h
> index c699842dd0..bcf62f825c 100644
> --- a/include/hw/mem/nvdimm.h
> +++ b/include/hw/mem/nvdimm.h
> @@ -154,7 +154,8 @@ void nvdimm_init_acpi_state(NVDIMMState *state,
> MemoryRegion *io,
> void nvdimm_build_srat(GArray *table_data);
> void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,
> BIOSLinker *linker, NVDIMMState *state,
> - uint32_t ram_slots);
> + uint32_t ram_slots, const char *oem_id,
> + const char *oem_table_id);
> void nvdimm_plug(NVDIMMState *state);
> void nvdimm_acpi_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev);
> #endif
> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> index f976aa667b..7e1fb0020f 100644
> --- a/hw/acpi/aml-build.c
> +++ b/hw/acpi/aml-build.c
> @@ -1663,6 +1663,16 @@ Aml *aml_object_type(Aml *object)
> return var;
> }
>
> +static void copy_pad_field(void *dst, const char *src, size_t dst_size)
why not reuse strpadcpy()
> +{
> + size_t copy_size;
> +
> + g_assert(src);
> + copy_size = MIN(strlen(src), dst_size);
> + memset(dst, 0x20, dst_size);
> + memcpy(dst, src, copy_size);
> +}
> +
> void
> build_header(BIOSLinker *linker, GArray *table_data,
> AcpiTableHeader *h, const char *sig, int len, uint8_t rev,
> @@ -1670,25 +1680,19 @@ build_header(BIOSLinker *linker, GArray *table_data,
> {
> unsigned tbl_offset = (char *)h - table_data->data;
> unsigned checksum_offset = (char *)&h->checksum - table_data->data;
> - memcpy(&h->signature, sig, 4);
I wouldn't touch unrelated to oem_[table_]id fields in this patch.
If you want to do that for consistency, it should be a separate patch
> +
> + copy_pad_field(&h->signature, sig, sizeof h->signature);
> +
> h->length = cpu_to_le32(len);
> h->revision = rev;
>
> - if (oem_id) {
> - strncpy((char *)h->oem_id, oem_id, sizeof h->oem_id);
> - } else {
> - memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6);
> - }
> -
> - if (oem_table_id) {
> - strncpy((char *)h->oem_table_id, oem_table_id,
> sizeof(h->oem_table_id));
> - } else {
> - memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4);
> - memcpy(h->oem_table_id + 4, sig, 4);
> - }
> + copy_pad_field(h->oem_id, oem_id, sizeof h->oem_id);
> + copy_pad_field(h->oem_table_id, oem_table_id, sizeof h->oem_table_id);
>
> h->oem_revision = cpu_to_le32(1);
> - memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4);
> +
> + copy_pad_field(h->asl_compiler_id, oem_table_id, sizeof
> h->asl_compiler_id);
> +
> h->asl_compiler_revision = cpu_to_le32(1);
> /* Checksum to be filled in by Guest linker */
> bios_linker_loader_add_checksum(linker, ACPI_BUILD_TABLE_FILE,
> @@ -1871,7 +1875,8 @@ void build_srat_memory(AcpiSratMemoryAffinity *numamem,
> uint64_t base,
> * ACPI spec 5.2.17 System Locality Distance Information Table
> * (Revision 2.0 or later)
> */
> -void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms)
> +void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
> + const char *oem_id, const char *oem_table_id)
> {
> int slit_start, i, j;
> slit_start = table_data->len;
> @@ -1892,7 +1897,7 @@ void build_slit(GArray *table_data, BIOSLinker *linker,
> MachineState *ms)
> build_header(linker, table_data,
> (void *)(table_data->data + slit_start),
> "SLIT",
> - table_data->len - slit_start, 1, NULL, NULL);
> + table_data->len - slit_start, 1, oem_id, oem_table_id);
> }
>
> /* build rev1/rev3/rev5.1 FADT */
> @@ -2024,7 +2029,8 @@ build_hdr:
> * table 7: TCG Hardware Interface Description Table Format for TPM 2.0
> * of TCG ACPI Specification, Family “1.2” and “2.0”, Version 1.2, Rev 8
> */
> -void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
> +void build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
> + const char *oem_id, const char *oem_table_id)
> {
> uint8_t start_method_params[12] = {};
> unsigned log_addr_offset, tpm2_start;
> @@ -2073,7 +2079,8 @@ void build_tpm2(GArray *table_data, BIOSLinker *linker,
> GArray *tcpalog)
> log_addr_offset, 8,
> ACPI_BUILD_TPMLOG_FILE, 0);
> build_header(linker, table_data,
> - tpm2_ptr, "TPM2", table_data->len - tpm2_start, 4, NULL,
> NULL);
> + tpm2_ptr, "TPM2", table_data->len - tpm2_start, 4, oem_id,
> + oem_table_id);
> }
>
> Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set)
> diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
> index f0ee9f51ca..a4dac6bf15 100644
> --- a/hw/acpi/ghes.c
> +++ b/hw/acpi/ghes.c
> @@ -359,7 +359,8 @@ static void build_ghes_v2(GArray *table_data, int
> source_id, BIOSLinker *linker)
> }
>
> /* Build Hardware Error Source Table */
> -void acpi_build_hest(GArray *table_data, BIOSLinker *linker)
> +void acpi_build_hest(GArray *table_data, BIOSLinker *linker,
> + const char *oem_id, const char *oem_table_id)
> {
> uint64_t hest_start = table_data->len;
>
> @@ -372,7 +373,7 @@ void acpi_build_hest(GArray *table_data, BIOSLinker
> *linker)
> build_ghes_v2(table_data, ACPI_HEST_SRC_ID_SEA, linker);
>
> build_header(linker, table_data, (void *)(table_data->data + hest_start),
> - "HEST", table_data->len - hest_start, 1, NULL, NULL);
> + "HEST", table_data->len - hest_start, 1, oem_id,
> oem_table_id);
> }
>
> void acpi_ghes_add_fw_cfg(AcpiGhesState *ags, FWCfgState *s,
> diff --git a/hw/acpi/hmat.c b/hw/acpi/hmat.c
> index 37806f7a06..edb3fd91b2 100644
> --- a/hw/acpi/hmat.c
> +++ b/hw/acpi/hmat.c
> @@ -253,7 +253,8 @@ static void hmat_build_table_structs(GArray *table_data,
> NumaState *numa_state)
> }
> }
>
> -void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState
> *numa_state)
> +void build_hmat(GArray *table_data, BIOSLinker *linker, NumaState
> *numa_state,
> + const char *oem_id, const char *oem_table_id)
> {
> int hmat_start = table_data->len;
>
> @@ -264,5 +265,5 @@ void build_hmat(GArray *table_data, BIOSLinker *linker,
> NumaState *numa_state)
>
> build_header(linker, table_data,
> (void *)(table_data->data + hmat_start),
> - "HMAT", table_data->len - hmat_start, 2, NULL, NULL);
> + "HMAT", table_data->len - hmat_start, 2, oem_id,
> oem_table_id);
> }
> diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
> index aa95b0cbaf..e3d5fe1939 100644
> --- a/hw/acpi/nvdimm.c
> +++ b/hw/acpi/nvdimm.c
> @@ -402,7 +402,8 @@ void nvdimm_plug(NVDIMMState *state)
> }
>
> static void nvdimm_build_nfit(NVDIMMState *state, GArray *table_offsets,
> - GArray *table_data, BIOSLinker *linker)
> + GArray *table_data, BIOSLinker *linker,
> + const char *oem_id, const char *oem_table_id)
> {
> NvdimmFitBuffer *fit_buf = &state->fit_buf;
> unsigned int header;
> @@ -417,7 +418,8 @@ static void nvdimm_build_nfit(NVDIMMState *state, GArray
> *table_offsets,
>
> build_header(linker, table_data,
> (void *)(table_data->data + header), "NFIT",
> - sizeof(NvdimmNfitHeader) + fit_buf->fit->len, 1, NULL,
> NULL);
> + sizeof(NvdimmNfitHeader) + fit_buf->fit->len, 1, oem_id,
> + oem_table_id);
> }
>
> #define NVDIMM_DSM_MEMORY_SIZE 4096
> @@ -1278,7 +1280,7 @@ static void nvdimm_build_nvdimm_devices(Aml *root_dev,
> uint32_t ram_slots)
> static void nvdimm_build_ssdt(GArray *table_offsets, GArray *table_data,
> BIOSLinker *linker,
> NVDIMMState *nvdimm_state,
> - uint32_t ram_slots)
> + uint32_t ram_slots, const char *oem_id)
> {
> Aml *ssdt, *sb_scope, *dev;
> int mem_addr_offset, nvdimm_ssdt;
> @@ -1331,7 +1333,7 @@ static void nvdimm_build_ssdt(GArray *table_offsets,
> GArray *table_data,
> NVDIMM_DSM_MEM_FILE, 0);
> build_header(linker, table_data,
> (void *)(table_data->data + nvdimm_ssdt),
> - "SSDT", table_data->len - nvdimm_ssdt, 1, NULL, "NVDIMM");
> + "SSDT", table_data->len - nvdimm_ssdt, 1, oem_id, "NVDIMM");
> free_aml_allocator();
> }
>
> @@ -1359,7 +1361,8 @@ void nvdimm_build_srat(GArray *table_data)
>
> void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,
> BIOSLinker *linker, NVDIMMState *state,
> - uint32_t ram_slots)
> + uint32_t ram_slots, const char *oem_id,
> + const char *oem_table_id)
> {
> GSList *device_list;
>
> @@ -1369,7 +1372,7 @@ void nvdimm_build_acpi(GArray *table_offsets, GArray
> *table_data,
> }
>
> nvdimm_build_ssdt(table_offsets, table_data, linker, state,
> - ram_slots);
> + ram_slots, oem_id);
>
> device_list = nvdimm_get_device_list();
> /* no NVDIMM device is plugged. */
> @@ -1377,6 +1380,7 @@ void nvdimm_build_acpi(GArray *table_offsets, GArray
> *table_data,
> return;
> }
>
> - nvdimm_build_nfit(state, table_offsets, table_data, linker);
> + nvdimm_build_nfit(state, table_offsets, table_data, linker,
> + oem_id, oem_table_id);
> g_slist_free(device_list);
> }
> diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c
> index 9510597a19..ec455c3b25 100644
> --- a/hw/acpi/pci.c
> +++ b/hw/acpi/pci.c
> @@ -28,7 +28,8 @@
> #include "hw/acpi/pci.h"
> #include "hw/pci/pcie_host.h"
>
> -void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
> +void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
> + const char *oem_id, const char *oem_table_id)
> {
> int mcfg_start = table_data->len;
>
> @@ -56,6 +57,6 @@ void build_mcfg(GArray *table_data, BIOSLinker *linker,
> AcpiMcfgInfo *info)
> build_append_int_noprefix(table_data, 0, 4);
>
> build_header(linker, table_data, (void *)(table_data->data + mcfg_start),
> - "MCFG", table_data->len - mcfg_start, 1, NULL, NULL);
> + "MCFG", table_data->len - mcfg_start, 1, oem_id,
> oem_table_id);
> }
>
> diff --git a/hw/acpi/vmgenid.c b/hw/acpi/vmgenid.c
> index 2c8152d508..93efbcb22a 100644
> --- a/hw/acpi/vmgenid.c
> +++ b/hw/acpi/vmgenid.c
> @@ -23,7 +23,7 @@
> #include "sysemu/reset.h"
>
> void vmgenid_build_acpi(VmGenIdState *vms, GArray *table_data, GArray *guid,
> - BIOSLinker *linker)
> + BIOSLinker *linker, const char *oem_id)
> {
> Aml *ssdt, *dev, *scope, *method, *addr, *if_ctx;
> uint32_t vgia_offset;
> @@ -117,7 +117,7 @@ void vmgenid_build_acpi(VmGenIdState *vms, GArray
> *table_data, GArray *guid,
>
> build_header(linker, table_data,
> (void *)(table_data->data + table_data->len - ssdt->buf->len),
> - "SSDT", ssdt->buf->len, 1, NULL, "VMGENID");
> + "SSDT", ssdt->buf->len, 1, oem_id, "VMGENID");
> free_aml_allocator();
> }
>
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 711cf2069f..de95100a02 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -340,7 +340,8 @@ build_iort(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
> iort->length = cpu_to_le32(iort_length);
>
> build_header(linker, table_data, (void *)(table_data->data + iort_start),
> - "IORT", table_data->len - iort_start, 0, NULL, NULL);
> + "IORT", table_data->len - iort_start, 0, vms->oem_id,
> + vms->oem_table_id);
> }
>
> static void
> @@ -374,7 +375,8 @@ build_spcr(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
> spcr->pci_vendor_id = 0xffff; /* PCI Vendor ID: not a PCI device */
>
> build_header(linker, table_data, (void *)(table_data->data + spcr_start),
> - "SPCR", table_data->len - spcr_start, 2, NULL, NULL);
> + "SPCR", table_data->len - spcr_start, 2, vms->oem_id,
> + vms->oem_table_id);
> }
>
> static void
> @@ -426,7 +428,8 @@ build_srat(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
> }
>
> build_header(linker, table_data, (void *)(table_data->data + srat_start),
> - "SRAT", table_data->len - srat_start, 3, NULL, NULL);
> + "SRAT", table_data->len - srat_start, 3, vms->oem_id,
> + vms->oem_table_id);
> }
>
> /* GTDT */
> @@ -461,7 +464,8 @@ build_gtdt(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
>
> build_header(linker, table_data,
> (void *)(table_data->data + gtdt_start), "GTDT",
> - table_data->len - gtdt_start, 2, NULL, NULL);
> + table_data->len - gtdt_start, 2, vms->oem_id,
> + vms->oem_table_id);
> }
>
> /* MADT */
> @@ -550,7 +554,8 @@ build_madt(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
>
> build_header(linker, table_data,
> (void *)(table_data->data + madt_start), "APIC",
> - table_data->len - madt_start, 3, NULL, NULL);
> + table_data->len - madt_start, 3, vms->oem_id,
> + vms->oem_table_id);
> }
>
> /* FADT */
> @@ -580,7 +585,7 @@ static void build_fadt_rev5(GArray *table_data,
> BIOSLinker *linker,
> g_assert_not_reached();
> }
>
> - build_fadt(table_data, linker, &fadt, NULL, NULL);
> + build_fadt(table_data, linker, &fadt, vms->oem_id, vms->oem_table_id);
> }
>
> /* DSDT */
> @@ -644,7 +649,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> VirtMachineState *vms)
> g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
> build_header(linker, table_data,
> (void *)(table_data->data + table_data->len - dsdt->buf->len),
> - "DSDT", dsdt->buf->len, 2, NULL, NULL);
> + "DSDT", dsdt->buf->len, 2, vms->oem_id,
> + vms->oem_table_id);
> free_aml_allocator();
> }
>
> @@ -703,7 +709,8 @@ void virt_acpi_build(VirtMachineState *vms,
> AcpiBuildTables *tables)
> .base = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].base,
> .size = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].size,
> };
> - build_mcfg(tables_blob, tables->linker, &mcfg);
> + build_mcfg(tables_blob, tables->linker, &mcfg, vms->oem_id,
> + vms->oem_table_id);
> }
>
> acpi_add_table(table_offsets, tables_blob);
> @@ -712,7 +719,8 @@ void virt_acpi_build(VirtMachineState *vms,
> AcpiBuildTables *tables)
> if (vms->ras) {
> build_ghes_error_table(tables->hardware_errors, tables->linker);
> acpi_add_table(table_offsets, tables_blob);
> - acpi_build_hest(tables_blob, tables->linker);
> + acpi_build_hest(tables_blob, tables->linker, vms->oem_id,
> + vms->oem_table_id);
> }
>
> if (ms->numa_state->num_nodes > 0) {
> @@ -720,13 +728,15 @@ void virt_acpi_build(VirtMachineState *vms,
> AcpiBuildTables *tables)
> build_srat(tables_blob, tables->linker, vms);
> if (ms->numa_state->have_numa_distance) {
> acpi_add_table(table_offsets, tables_blob);
> - build_slit(tables_blob, tables->linker, ms);
> + build_slit(tables_blob, tables->linker, ms, vms->oem_id,
> + vms->oem_table_id);
> }
> }
>
> if (ms->nvdimms_state->is_enabled) {
> nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
> - ms->nvdimms_state, ms->ram_slots);
> + ms->nvdimms_state, ms->ram_slots, vms->oem_id,
> + vms->oem_table_id);
> }
>
> if (its_class_name() && !vmc->no_its) {
> @@ -736,18 +746,20 @@ void virt_acpi_build(VirtMachineState *vms,
> AcpiBuildTables *tables)
>
> if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) {
> acpi_add_table(table_offsets, tables_blob);
> - build_tpm2(tables_blob, tables->linker, tables->tcpalog);
> + build_tpm2(tables_blob, tables->linker, tables->tcpalog, vms->oem_id,
> + vms->oem_table_id);
> }
>
> /* XSDT is pointed to by RSDP */
> xsdt = tables_blob->len;
> - build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
> + build_xsdt(tables_blob, tables->linker, table_offsets, vms->oem_id,
> + vms->oem_table_id);
>
> /* RSDP is in FSEG memory, so allocate it separately */
> {
> AcpiRsdpData rsdp_data = {
> .revision = 2,
> - .oem_id = ACPI_BUILD_APPNAME6,
> + .oem_id = vms->oem_id,
> .xsdt_tbl_offset = &xsdt,
> .rsdt_tbl_offset = NULL,
> };
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 96985917d3..eb08a79aa3 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -2089,6 +2089,43 @@ static void virt_set_its(Object *obj, bool value,
> Error **errp)
> vms->its = value;
> }
>
> +static char *virt_get_oem_id(Object *obj, Error **errp)
> +{
> + return g_strdup(VIRT_MACHINE(obj)->oem_id);
^^^^^^^^^^^^^^^^^^^^^^^^
such usage is not recommended,
preferred way is:
Foo *vm = VIRT_MACHINE(obj);
then use vm->oem_id where it's needed.
same applies to other similar places in this patch.
> +}
> +
> +static void virt_set_oem_id(Object *obj, const char *value, Error **errp)
> +{
> + size_t len = strlen(value);
> +
> + if (len > 6) {
> + error_setg(errp,
> + "User specified oem-id value is bigger than 6 bytes in
> size");
> + return;
> + }
> +
> + strncpy(VIRT_MACHINE(obj)->oem_id, value, len + 1);
> +}
> +
> +static char *virt_get_oem_table_id(Object *obj, Error **errp)
> +{
> + return g_strdup(VIRT_MACHINE(obj)->oem_table_id);
> +}
> +
> +static void virt_set_oem_table_id(Object *obj, const char *value,
> + Error **errp)
> +{
> + size_t len = strlen(value);
> +
> + if (len > 8) {
> + error_setg(errp,
> + "User specified oem-table-id value is bigger than 8 bytes
> in size");
> + return;
> + }
> + strncpy(VIRT_MACHINE(obj)->oem_table_id, value, len + 1);
> +}
> +
> +
> bool virt_is_acpi_enabled(VirtMachineState *vms)
> {
> if (vms->acpi == ON_OFF_AUTO_OFF) {
> @@ -2538,6 +2575,23 @@ static void virt_machine_class_init(ObjectClass *oc,
> void *data)
> "Set on/off to enable/disable "
> "ITS instantiation");
>
> + object_class_property_add_str(oc, "oem-id",
> + virt_get_oem_id,
> + virt_set_oem_id);
> + object_class_property_set_description(oc, "oem-id",
> + "Override the default value of
> field OEMID "
> + "in ACPI table header."
> + "The string may be up to 6 bytes
> in size");
> +
> +
> + object_class_property_add_str(oc, "oem-table-id",
> + virt_get_oem_table_id,
> + virt_set_oem_table_id);
> + object_class_property_set_description(oc, "oem-table-id",
> + "Override the default value of
> field OEM Table ID "
> + "in ACPI table header."
> + "The string may be up to 8 bytes
> in size");
> +
> }
>
> static void virt_instance_init(Object *obj)
> @@ -2579,6 +2633,9 @@ static void virt_instance_init(Object *obj)
> vms->irqmap = a15irqmap;
>
> virt_flash_create(vms);
> +
> + vms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
> + vms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
> }
>
> static const TypeInfo virt_machine_info = {
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index f18b71dea9..25898fdd37 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1636,12 +1636,13 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
> g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
> build_header(linker, table_data,
> (void *)(table_data->data + table_data->len - dsdt->buf->len),
> - "DSDT", dsdt->buf->len, 1, NULL, NULL);
> + "DSDT", dsdt->buf->len, 1, pcms->oem_id,
> pcms->oem_table_id);
> free_aml_allocator();
> }
>
> static void
> -build_hpet(GArray *table_data, BIOSLinker *linker)
> +build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id,
> + const char *oem_table_id)
> {
> Acpi20Hpet *hpet;
>
> @@ -1652,11 +1653,12 @@ build_hpet(GArray *table_data, BIOSLinker *linker)
> hpet->timer_block_id = cpu_to_le32(0x8086a201);
> hpet->addr.address = cpu_to_le64(HPET_BASE);
> build_header(linker, table_data,
> - (void *)hpet, "HPET", sizeof(*hpet), 1, NULL, NULL);
> + (void *)hpet, "HPET", sizeof(*hpet), 1, oem_id,
> oem_table_id);
> }
>
> static void
> -build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
> +build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
> + const char *oem_id, const char *oem_table_id)
> {
> Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
> unsigned log_addr_size = sizeof(tcpa->log_area_start_address);
> @@ -1676,7 +1678,7 @@ build_tpm_tcpa(GArray *table_data, BIOSLinker *linker,
> GArray *tcpalog)
> ACPI_BUILD_TPMLOG_FILE, 0);
>
> build_header(linker, table_data,
> - (void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL);
> + (void *)tcpa, "TCPA", sizeof(*tcpa), 2, oem_id,
> oem_table_id);
> }
>
> #define HOLE_640K_START (640 * KiB)
> @@ -1811,7 +1813,8 @@ build_srat(GArray *table_data, BIOSLinker *linker,
> MachineState *machine)
> build_header(linker, table_data,
> (void *)(table_data->data + srat_start),
> "SRAT",
> - table_data->len - srat_start, 1, NULL, NULL);
> + table_data->len - srat_start, 1, pcms->oem_id,
> + pcms->oem_table_id);
> }
>
> /*
> @@ -1819,7 +1822,8 @@ build_srat(GArray *table_data, BIOSLinker *linker,
> MachineState *machine)
> * (version Oct. 2014 or later)
> */
> static void
> -build_dmar_q35(GArray *table_data, BIOSLinker *linker)
> +build_dmar_q35(GArray *table_data, BIOSLinker *linker, const char *oem_id,
> + const char *oem_table_id)
> {
> int dmar_start = table_data->len;
>
> @@ -1869,7 +1873,7 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
> }
>
> build_header(linker, table_data, (void *)(table_data->data + dmar_start),
> - "DMAR", table_data->len - dmar_start, 1, NULL, NULL);
> + "DMAR", table_data->len - dmar_start, 1, oem_id,
> oem_table_id);
> }
>
> /*
> @@ -1880,7 +1884,8 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
> * Helpful to speedup Windows guests and ignored by others.
> */
> static void
> -build_waet(GArray *table_data, BIOSLinker *linker)
> +build_waet(GArray *table_data, BIOSLinker *linker, const char *oem_id,
> + const char *oem_table_id)
> {
> int waet_start = table_data->len;
>
> @@ -1896,7 +1901,7 @@ build_waet(GArray *table_data, BIOSLinker *linker)
> build_append_int_noprefix(table_data, 1 << 1 /* ACPI PM timer good */,
> 4);
>
> build_header(linker, table_data, (void *)(table_data->data + waet_start),
> - "WAET", table_data->len - waet_start, 1, NULL, NULL);
> + "WAET", table_data->len - waet_start, 1, oem_id,
> oem_table_id);
> }
>
> /*
> @@ -1998,7 +2003,8 @@ ivrs_host_bridges(Object *obj, void *opaque)
> }
>
> static void
> -build_amd_iommu(GArray *table_data, BIOSLinker *linker)
> +build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id,
> + const char *oem_table_id)
> {
> int ivhd_table_len = 24;
> int iommu_start = table_data->len;
> @@ -2093,7 +2099,8 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker)
> }
>
> build_header(linker, table_data, (void *)(table_data->data +
> iommu_start),
> - "IVRS", table_data->len - iommu_start, 1, NULL, NULL);
> + "IVRS", table_data->len - iommu_start, 1, oem_id,
> + oem_table_id);
> }
>
> typedef
> @@ -2149,12 +2156,26 @@ void acpi_build(AcpiBuildTables *tables, MachineState
> *machine)
> GArray *tables_blob = tables->table_data;
> AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL };
> Object *vmgenid_dev;
> + char *oem_id;
> + char *oem_table_id;
>
> acpi_get_pm_info(machine, &pm);
> acpi_get_misc_info(&misc);
> acpi_get_pci_holes(&pci_hole, &pci_hole64);
> acpi_get_slic_oem(&slic_oem);
>
> + if (slic_oem.id) {
> + oem_id = slic_oem.id;
> + } else {
> + oem_id = pcms->oem_id;
> + }
> +
> + if (slic_oem.table_id) {
> + oem_table_id = slic_oem.table_id;
> + } else {
> + oem_table_id = pcms->oem_table_id;
> + }
> +
> table_offsets = g_array_new(false, true /* clear */,
> sizeof(uint32_t));
> ACPI_BUILD_DPRINTF("init ACPI tables\n");
> @@ -2188,32 +2209,35 @@ void acpi_build(AcpiBuildTables *tables, MachineState
> *machine)
> pm.fadt.facs_tbl_offset = &facs;
> pm.fadt.dsdt_tbl_offset = &dsdt;
> pm.fadt.xdsdt_tbl_offset = &dsdt;
> - build_fadt(tables_blob, tables->linker, &pm.fadt,
> - slic_oem.id, slic_oem.table_id);
> + build_fadt(tables_blob, tables->linker, &pm.fadt, oem_id, oem_table_id);
> aml_len += tables_blob->len - fadt;
>
> acpi_add_table(table_offsets, tables_blob);
> acpi_build_madt(tables_blob, tables->linker, x86ms,
> - ACPI_DEVICE_IF(x86ms->acpi_dev));
> + ACPI_DEVICE_IF(x86ms->acpi_dev), pcms->oem_id,
> + pcms->oem_table_id);
>
> vmgenid_dev = find_vmgenid_dev();
> if (vmgenid_dev) {
> acpi_add_table(table_offsets, tables_blob);
> vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob,
> - tables->vmgenid, tables->linker);
> + tables->vmgenid, tables->linker, pcms->oem_id);
> }
>
> if (misc.has_hpet) {
> acpi_add_table(table_offsets, tables_blob);
> - build_hpet(tables_blob, tables->linker);
> + build_hpet(tables_blob, tables->linker, pcms->oem_id,
> + pcms->oem_table_id);
> }
> if (misc.tpm_version != TPM_VERSION_UNSPEC) {
> if (misc.tpm_version == TPM_VERSION_1_2) {
> acpi_add_table(table_offsets, tables_blob);
> - build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
> + build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog,
> + pcms->oem_id, pcms->oem_table_id);
> } else { /* TPM_VERSION_2_0 */
> acpi_add_table(table_offsets, tables_blob);
> - build_tpm2(tables_blob, tables->linker, tables->tcpalog);
> + build_tpm2(tables_blob, tables->linker, tables->tcpalog,
> + pcms->oem_id, pcms->oem_table_id);
> }
> }
> if (pcms->numa_nodes) {
> @@ -2221,34 +2245,40 @@ void acpi_build(AcpiBuildTables *tables, MachineState
> *machine)
> build_srat(tables_blob, tables->linker, machine);
> if (machine->numa_state->have_numa_distance) {
> acpi_add_table(table_offsets, tables_blob);
> - build_slit(tables_blob, tables->linker, machine);
> + build_slit(tables_blob, tables->linker, machine, pcms->oem_id,
> + pcms->oem_table_id);
> }
> if (machine->numa_state->hmat_enabled) {
> acpi_add_table(table_offsets, tables_blob);
> - build_hmat(tables_blob, tables->linker, machine->numa_state);
> + build_hmat(tables_blob, tables->linker, machine->numa_state,
> + pcms->oem_id, pcms->oem_table_id);
> }
> }
> if (acpi_get_mcfg(&mcfg)) {
> acpi_add_table(table_offsets, tables_blob);
> - build_mcfg(tables_blob, tables->linker, &mcfg);
> + build_mcfg(tables_blob, tables->linker, &mcfg, pcms->oem_id,
> + pcms->oem_table_id);
> }
> if (x86_iommu_get_default()) {
> IommuType IOMMUType = x86_iommu_get_type();
> if (IOMMUType == TYPE_AMD) {
> acpi_add_table(table_offsets, tables_blob);
> - build_amd_iommu(tables_blob, tables->linker);
> + build_amd_iommu(tables_blob, tables->linker, pcms->oem_id,
> + pcms->oem_table_id);
> } else if (IOMMUType == TYPE_INTEL) {
> acpi_add_table(table_offsets, tables_blob);
> - build_dmar_q35(tables_blob, tables->linker);
> + build_dmar_q35(tables_blob, tables->linker, pcms->oem_id,
> + pcms->oem_table_id);
> }
> }
> if (machine->nvdimms_state->is_enabled) {
> nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
> - machine->nvdimms_state, machine->ram_slots);
> + machine->nvdimms_state, machine->ram_slots,
> + pcms->oem_id, pcms->oem_table_id);
> }
>
> acpi_add_table(table_offsets, tables_blob);
> - build_waet(tables_blob, tables->linker);
> + build_waet(tables_blob, tables->linker, pcms->oem_id,
> pcms->oem_table_id);
>
> /* Add tables supplied by user (if any) */
> for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
> @@ -2261,13 +2291,13 @@ void acpi_build(AcpiBuildTables *tables, MachineState
> *machine)
> /* RSDT is pointed to by RSDP */
> rsdt = tables_blob->len;
> build_rsdt(tables_blob, tables->linker, table_offsets,
> - slic_oem.id, slic_oem.table_id);
> + oem_id, oem_table_id);
>
> /* RSDP is in FSEG memory, so allocate it separately */
> {
> AcpiRsdpData rsdp_data = {
> .revision = 0,
> - .oem_id = ACPI_BUILD_APPNAME6,
> + .oem_id = pcms->oem_id,
> .xsdt_tbl_offset = NULL,
> .rsdt_tbl_offset = &rsdt,
> };
> diff --git a/hw/i386/acpi-common.c b/hw/i386/acpi-common.c
> index a6a30e8363..1f5947fcf9 100644
> --- a/hw/i386/acpi-common.c
> +++ b/hw/i386/acpi-common.c
> @@ -72,7 +72,8 @@ void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
> }
>
> void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
> - X86MachineState *x86ms, AcpiDeviceIf *adev)
> + 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));
> @@ -157,6 +158,6 @@ void acpi_build_madt(GArray *table_data, BIOSLinker
> *linker,
>
> build_header(linker, table_data,
> (void *)(table_data->data + madt_start), "APIC",
> - table_data->len - madt_start, 1, NULL, NULL);
> + table_data->len - madt_start, 1, oem_id, oem_table_id);
> }
>
> diff --git a/hw/i386/acpi-microvm.c b/hw/i386/acpi-microvm.c
> index d34a301b84..54b3af478a 100644
> --- a/hw/i386/acpi-microvm.c
> +++ b/hw/i386/acpi-microvm.c
> @@ -149,7 +149,7 @@ build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
> g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
> build_header(linker, table_data,
> (void *)(table_data->data + table_data->len - dsdt->buf->len),
> - "DSDT", dsdt->buf->len, 2, NULL, NULL);
> + "DSDT", dsdt->buf->len, 2, mms->oem_id, mms->oem_table_id);
> free_aml_allocator();
> }
>
> @@ -201,21 +201,24 @@ static void acpi_build_microvm(AcpiBuildTables *tables,
> pmfadt.dsdt_tbl_offset = &dsdt;
> pmfadt.xdsdt_tbl_offset = &dsdt;
> acpi_add_table(table_offsets, tables_blob);
> - build_fadt(tables_blob, tables->linker, &pmfadt, NULL, NULL);
> + build_fadt(tables_blob, tables->linker, &pmfadt, mms->oem_id,
> + mms->oem_table_id);
>
> acpi_add_table(table_offsets, tables_blob);
> acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine),
> - ACPI_DEVICE_IF(x86ms->acpi_dev));
> + ACPI_DEVICE_IF(x86ms->acpi_dev), mms->oem_id,
> + mms->oem_table_id);
>
> xsdt = tables_blob->len;
> - build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
> + build_xsdt(tables_blob, tables->linker, table_offsets, mms->oem_id,
> + mms->oem_table_id);
>
> /* RSDP is in FSEG memory, so allocate it separately */
> {
> AcpiRsdpData rsdp_data = {
> /* ACPI 2.0: 5.2.4.3 RSDP Structure */
> .revision = 2, /* xsdt needs v2 */
> - .oem_id = ACPI_BUILD_APPNAME6,
> + .oem_id = mms->oem_id,
> .xsdt_tbl_offset = &xsdt,
> .rsdt_tbl_offset = NULL,
> };
> diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
> index edf2b0f061..904e3e65a1 100644
> --- a/hw/i386/microvm.c
> +++ b/hw/i386/microvm.c
> @@ -648,6 +648,45 @@ static void microvm_powerdown_req(Notifier *notifier,
> void *data)
> }
> }
>
> +static char *microvm_machine_get_oem_id(Object *obj, Error **errp)
> +{
> + return g_strdup(MICROVM_MACHINE(obj)->oem_id);
> +}
> +
> +static void microvm_machine_set_oem_id(Object *obj, const char *value,
> + Error **errp)
> +{
> + size_t len = strlen(value);
> +
> + if (len > 6) {
> + error_setg(errp,
> + "User specified "MICROVM_MACHINE_OEM_ID" value is bigger than "
> + "6 bytes in size");
> + return;
> + }
> +
> + strncpy(MICROVM_MACHINE(obj)->oem_id, value, len + 1);
> +}
> +
> +static char *microvm_machine_get_oem_table_id(Object *obj, Error **errp)
> +{
> + return g_strdup(MICROVM_MACHINE(obj)->oem_table_id);
> +}
> +
> +static void microvm_machine_set_oem_table_id(Object *obj, const char *value,
> + Error **errp)
> +{
> + size_t len = strlen(value);
> +
> + if (len > 8) {
> + error_setg(errp,
> + "User specified "MICROVM_MACHINE_OEM_TABLE_ID" value is bigger
> than "
> + "8 bytes in size");
> + return;
> + }
> + strncpy(MICROVM_MACHINE(obj)->oem_table_id, value, len + 1);
> +}
> +
> static void microvm_machine_initfn(Object *obj)
> {
> MicrovmMachineState *mms = MICROVM_MACHINE(obj);
> @@ -669,6 +708,9 @@ static void microvm_machine_initfn(Object *obj)
> qemu_add_machine_init_done_notifier(&mms->machine_done);
> mms->powerdown_req.notify = microvm_powerdown_req;
> qemu_register_powerdown_notifier(&mms->powerdown_req);
> +
> + mms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
> + mms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
> }
>
> static void microvm_class_init(ObjectClass *oc, void *data)
> @@ -757,6 +799,24 @@ static void microvm_class_init(ObjectClass *oc, void
> *data)
> MICROVM_MACHINE_AUTO_KERNEL_CMDLINE,
> "Set off to disable adding virtio-mmio devices to the kernel
> cmdline");
>
> + object_class_property_add_str(oc, MICROVM_MACHINE_OEM_ID,
> + microvm_machine_get_oem_id,
> + microvm_machine_set_oem_id);
> + object_class_property_set_description(oc, MICROVM_MACHINE_OEM_ID,
> + "Override the default value of
> field OEMID "
> + "in ACPI table header."
> + "The string may be up to 6 bytes
> in size");
> +
> +
> + object_class_property_add_str(oc, MICROVM_MACHINE_OEM_TABLE_ID,
> + microvm_machine_get_oem_table_id,
> + microvm_machine_set_oem_table_id);
> + object_class_property_set_description(oc, MICROVM_MACHINE_OEM_TABLE_ID,
> + "Override the default value of
> field OEM Table ID "
> + "in ACPI table header."
> + "The string may be up to 8 bytes
> in size");
> +
> +
> machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
> }
>
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index 5458f61d10..9c50abde68 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -1611,6 +1611,44 @@ static void pc_machine_set_max_fw_size(Object *obj,
> Visitor *v,
> pcms->max_fw_size = value;
> }
>
> +static char *pc_machine_get_oem_id(Object *obj, Error **errp)
> +{
> + return g_strdup(PC_MACHINE(obj)->oem_id);
> +}
> +
> +static void pc_machine_set_oem_id(Object *obj, const char *value, Error
> **errp)
> +{
> + size_t len = strlen(value);
> +
> + if (len > 6) {
> + error_setg(errp,
> + "User specified "PC_MACHINE_OEM_ID" value is bigger than "
> + "6 bytes in size");
> + return;
> + }
> +
> + strncpy(PC_MACHINE(obj)->oem_id, value, len + 1);
> +}
> +
> +static char *pc_machine_get_oem_table_id(Object *obj, Error **errp)
> +{
> + return g_strdup(PC_MACHINE(obj)->oem_table_id);
> +}
> +
> +static void pc_machine_set_oem_table_id(Object *obj, const char *value,
> + Error **errp)
> +{
> + size_t len = strlen(value);
> +
> + if (len > 8) {
> + error_setg(errp,
> + "User specified "PC_MACHINE_OEM_TABLE_ID" value is bigger than "
> + "8 bytes in size");
> + return;
> + }
> + strncpy(PC_MACHINE(obj)->oem_table_id, value, len + 1);
> +}
> +
> static void pc_machine_initfn(Object *obj)
> {
> PCMachineState *pcms = PC_MACHINE(obj);
> @@ -1623,6 +1661,8 @@ static void pc_machine_initfn(Object *obj)
> pcms->max_ram_below_4g = 0; /* use default */
> /* acpi build is enabled by default if machine supports it */
> pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
> + pcms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
> + pcms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
> pcms->smbus_enabled = true;
> pcms->sata_enabled = true;
> pcms->pit_enabled = true;
> @@ -1759,6 +1799,24 @@ static void pc_machine_class_init(ObjectClass *oc,
> void *data)
> NULL, NULL);
> object_class_property_set_description(oc, PC_MACHINE_MAX_FW_SIZE,
> "Maximum combined firmware size");
> +
> + object_class_property_add_str(oc, PC_MACHINE_OEM_ID,
> + pc_machine_get_oem_id,
> + pc_machine_set_oem_id);
> + object_class_property_set_description(oc, PC_MACHINE_OEM_ID,
> + "Override the default value of
> field OEMID "
> + "in ACPI table header."
> + "The string may be up to 6 bytes
> in size");
> +
> +
> + object_class_property_add_str(oc, PC_MACHINE_OEM_TABLE_ID,
> + pc_machine_get_oem_table_id,
> + pc_machine_set_oem_table_id);
> + object_class_property_set_description(oc, PC_MACHINE_OEM_TABLE_ID,
> + "Override the default value of
> field OEM Table ID "
> + "in ACPI table header."
> + "The string may be up to 8 bytes
> in size");
> +
> }
>
> static const TypeInfo pc_machine_info = {
