diff mbox series

[v3,17/35] acpi: use build_append_int_noprefix() API to compose SRAT table

Message ID 20210907144814.741785-18-imammedo@redhat.com (mailing list archive)
State New, archived
Headers show
Series acpi: refactor error prone build_header() and packed structures usage in ACPI tables | expand

Commit Message

Igor Mammedov Sept. 7, 2021, 2:47 p.m. UTC
Drop usage of packed structures and explicit endian conversions
when building SRAT tables for arm/x86 and use endian agnostic
build_append_int_noprefix() API to build it.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v3:
 * rebase on top of (e77af21a7a2 hw/i386/acpi-build: Get NUMA information from struct NumaState)
CC: xiaoguangrong.eric@gmail.com
CC: shannon.zhaosl@gmail.com
CC: peter.maydell@linaro.org
CC: marcel.apfelbaum@gmail.com
CC: qemu-arm@nongnu.org
CC: drjones@redhat.com
CC: eauger@redhat.com
---
 include/hw/acpi/acpi-defs.h | 49 -----------------------
 include/hw/acpi/aml-build.h |  2 +-
 hw/acpi/aml-build.c         | 24 ++++++++----
 hw/acpi/nvdimm.c            |  4 +-
 hw/arm/virt-acpi-build.c    | 29 ++++++++------
 hw/i386/acpi-build.c        | 78 +++++++++++++++++++++----------------
 6 files changed, 80 insertions(+), 106 deletions(-)

Comments

Eric Auger Sept. 22, 2021, 8:55 a.m. UTC | #1
On 9/7/21 4:47 PM, Igor Mammedov wrote:
> Drop usage of packed structures and explicit endian conversions
> when building SRAT tables for arm/x86 and use endian agnostic
> build_append_int_noprefix() API to build it.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v3:
>  * rebase on top of (e77af21a7a2 hw/i386/acpi-build: Get NUMA information from struct NumaState)
> CC: xiaoguangrong.eric@gmail.com
> CC: shannon.zhaosl@gmail.com
> CC: peter.maydell@linaro.org
> CC: marcel.apfelbaum@gmail.com
> CC: qemu-arm@nongnu.org
> CC: drjones@redhat.com
> CC: eauger@redhat.com
> ---
>  include/hw/acpi/acpi-defs.h | 49 -----------------------
>  include/hw/acpi/aml-build.h |  2 +-
>  hw/acpi/aml-build.c         | 24 ++++++++----
>  hw/acpi/nvdimm.c            |  4 +-
>  hw/arm/virt-acpi-build.c    | 29 ++++++++------
>  hw/i386/acpi-build.c        | 78 +++++++++++++++++++++----------------
>  6 files changed, 80 insertions(+), 106 deletions(-)
> 
> diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
> index 5826ee04b6..d293304f9c 100644
> --- a/include/hw/acpi/acpi-defs.h
> +++ b/include/hw/acpi/acpi-defs.h
> @@ -358,55 +358,6 @@ struct AcpiGenericTimerTable {
>  } QEMU_PACKED;
>  typedef struct AcpiGenericTimerTable AcpiGenericTimerTable;
>  
> -#define ACPI_SRAT_PROCESSOR_APIC     0
> -#define ACPI_SRAT_MEMORY             1
> -#define ACPI_SRAT_PROCESSOR_x2APIC   2
> -#define ACPI_SRAT_PROCESSOR_GICC     3
> -
> -struct AcpiSratProcessorAffinity {
> -    ACPI_SUB_HEADER_DEF
> -    uint8_t     proximity_lo;
> -    uint8_t     local_apic_id;
> -    uint32_t    flags;
> -    uint8_t     local_sapic_eid;
> -    uint8_t     proximity_hi[3];
> -    uint32_t    reserved;
> -} QEMU_PACKED;
> -typedef struct AcpiSratProcessorAffinity AcpiSratProcessorAffinity;
> -
> -struct AcpiSratProcessorX2ApicAffinity {
> -    ACPI_SUB_HEADER_DEF
> -    uint16_t    reserved;
> -    uint32_t    proximity_domain;
> -    uint32_t    x2apic_id;
> -    uint32_t    flags;
> -    uint32_t    clk_domain;
> -    uint32_t    reserved2;
> -} QEMU_PACKED;
> -typedef struct AcpiSratProcessorX2ApicAffinity AcpiSratProcessorX2ApicAffinity;
> -
> -struct AcpiSratMemoryAffinity {
> -    ACPI_SUB_HEADER_DEF
> -    uint32_t    proximity;
> -    uint16_t    reserved1;
> -    uint64_t    base_addr;
> -    uint64_t    range_length;
> -    uint32_t    reserved2;
> -    uint32_t    flags;
> -    uint32_t    reserved3[2];
> -} QEMU_PACKED;
> -typedef struct AcpiSratMemoryAffinity AcpiSratMemoryAffinity;
> -
> -struct AcpiSratProcessorGiccAffinity {
> -    ACPI_SUB_HEADER_DEF
> -    uint32_t    proximity;
> -    uint32_t    acpi_processor_uid;
> -    uint32_t    flags;
> -    uint32_t    clock_domain;
> -} QEMU_PACKED;
> -
> -typedef struct AcpiSratProcessorGiccAffinity AcpiSratProcessorGiccAffinity;
> -
>  /* DMAR - DMA Remapping table r2.2 */
>  struct AcpiTableDmar {
>      ACPI_TABLE_HEADER_DEF
> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> index 4242382399..6e1f42e119 100644
> --- a/include/hw/acpi/aml-build.h
> +++ b/include/hw/acpi/aml-build.h
> @@ -487,7 +487,7 @@ Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set, uint32_t io_offset,
>                 uint32_t mmio32_offset, uint64_t mmio64_offset,
>                 uint16_t bus_nr_offset);
>  
> -void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
> +void build_srat_memory(GArray *table_data, uint64_t base,
>                         uint64_t len, int node, MemoryAffinityFlags flags);
>  
>  void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> index 5e8bfb631c..050fdb3f37 100644
> --- a/hw/acpi/aml-build.c
> +++ b/hw/acpi/aml-build.c
> @@ -1936,15 +1936,25 @@ build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
>      acpi_table_end(linker, &table);
>  }
>  
> -void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
> +/*
> + * ACPI spec, Revision 4.0
> + * 5.2.16.2 Memory Affinity Structure
> + */
> +void build_srat_memory(GArray *table_data, uint64_t base,
>                         uint64_t len, int node, MemoryAffinityFlags flags)
>  {
> -    numamem->type = ACPI_SRAT_MEMORY;
> -    numamem->length = sizeof(*numamem);
> -    numamem->proximity = cpu_to_le32(node);
> -    numamem->flags = cpu_to_le32(flags);
> -    numamem->base_addr = cpu_to_le64(base);
> -    numamem->range_length = cpu_to_le64(len);
> +    build_append_int_noprefix(table_data, 1, 1); /* Type */
> +    build_append_int_noprefix(table_data, 40, 1); /* Length */
> +    build_append_int_noprefix(table_data, node, 4); /* Proximity Domain */
> +    build_append_int_noprefix(table_data, 0, 2); /* Reserved */
> +    build_append_int_noprefix(table_data, base, 4); /* Base Address Low */
> +    /* Base Address High */
> +    build_append_int_noprefix(table_data, base >> 32, 4);
> +    build_append_int_noprefix(table_data, len, 4); /* Length Low */
> +    build_append_int_noprefix(table_data, len >> 32, 4); /* Length High */
> +    build_append_int_noprefix(table_data, 0, 4); /* Reserved */
> +    build_append_int_noprefix(table_data, flags, 4); /* Flags */
> +    build_append_int_noprefix(table_data, 0, 8); /* Reserved */
>  }
>  
>  /*
> diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
> index e050b47c2b..baab81f7a6 100644
> --- a/hw/acpi/nvdimm.c
> +++ b/hw/acpi/nvdimm.c
> @@ -1336,7 +1336,6 @@ void nvdimm_build_srat(GArray *table_data)
>      GSList *device_list = nvdimm_get_device_list();
>  
>      for (; device_list; device_list = device_list->next) {
> -        AcpiSratMemoryAffinity *numamem = NULL;
>          DeviceState *dev = device_list->data;
>          Object *obj = OBJECT(dev);
>          uint64_t addr, size;
> @@ -1346,8 +1345,7 @@ void nvdimm_build_srat(GArray *table_data)
>          addr = object_property_get_uint(obj, PC_DIMM_ADDR_PROP, &error_abort);
>          size = object_property_get_uint(obj, PC_DIMM_SIZE_PROP, &error_abort);
>  
> -        numamem = acpi_data_push(table_data, sizeof *numamem);
> -        build_srat_memory(numamem, addr, size, node,
> +        build_srat_memory(table_data, addr, size, node,
>                            MEM_AFFINITY_ENABLED | MEM_AFFINITY_NON_VOLATILE);
>      }
>      g_slist_free(device_list);
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 21efe7fe34..6ba02cf281 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -474,11 +474,13 @@ build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>                   vms->oem_table_id);
>  }
>  
> +/*
> + * ACPI spec, Revision 5.1
> + * 5.2.16 System Resource Affinity Table (SRAT)
> + */
>  static void
>  build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>  {
> -    AcpiSratProcessorGiccAffinity *core;
> -    AcpiSratMemoryAffinity *numamem;
>      int i;
>      uint64_t mem_base;
>      MachineClass *mc = MACHINE_GET_CLASS(vms);
> @@ -492,19 +494,23 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>      build_append_int_noprefix(table_data, 0, 8); /* Reserved */
>  
>      for (i = 0; i < cpu_list->len; ++i) {
> -        core = acpi_data_push(table_data, sizeof(*core));
> -        core->type = ACPI_SRAT_PROCESSOR_GICC;
> -        core->length = sizeof(*core);
> -        core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
> -        core->acpi_processor_uid = cpu_to_le32(i);
> -        core->flags = cpu_to_le32(1);
> +        uint32_t nodeid = cpu_list->cpus[i].props.node_id;
> +        /*
> +         * 5.2.16.4 GICC Affinity Structure
> +         */
> +        build_append_int_noprefix(table_data, 3, 1);      /* Type */
> +        build_append_int_noprefix(table_data, 18, 1);     /* Length */
> +        build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
> +        build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
> +        /* Flags, Table 5-76 */
> +        build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
> +        build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
>      }
>  
>      mem_base = vms->memmap[VIRT_MEM].base;
>      for (i = 0; i < ms->numa_state->num_nodes; ++i) {
>          if (ms->numa_state->nodes[i].node_mem > 0) {
> -            numamem = acpi_data_push(table_data, sizeof(*numamem));
> -            build_srat_memory(numamem, mem_base,
> +            build_srat_memory(table_data, mem_base,
>                                ms->numa_state->nodes[i].node_mem, i,
>                                MEM_AFFINITY_ENABLED);
>              mem_base += ms->numa_state->nodes[i].node_mem;
> @@ -516,8 +522,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>      }
>  
>      if (ms->device_memory) {
> -        numamem = acpi_data_push(table_data, sizeof *numamem);
> -        build_srat_memory(numamem, ms->device_memory->base,
> +        build_srat_memory(table_data, ms->device_memory->base,
>                            memory_region_size(&ms->device_memory->mr),
>                            ms->numa_state->num_nodes - 1,
>                            MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index 41c0a63b30..51e0ba07b6 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1917,13 +1917,15 @@ build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
>  #define HOLE_640K_START  (640 * KiB)
>  #define HOLE_640K_END   (1 * MiB)
>  
> +/*
> + * ACPI spec, Revision 3.0
> + * 5.2.15 System Resource Affinity Table (SRAT)
> + */
>  static void
>  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>  {
> -    AcpiSratMemoryAffinity *numamem;
> -
>      int i;
> -    int numa_start, slots;
> +    int numa_mem_start, slots;
>      uint64_t mem_len, mem_base, next_base;
>      MachineClass *mc = MACHINE_GET_CLASS(machine);
>      X86MachineState *x86ms = X86_MACHINE(machine);
> @@ -1946,34 +1948,41 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>          uint32_t apic_id = apic_ids->cpus[i].arch_id;
>  
>          if (apic_id < 255) {
> -            AcpiSratProcessorAffinity *core;
> -
> -            core = acpi_data_push(table_data, sizeof *core);
> -            core->type = ACPI_SRAT_PROCESSOR_APIC;
> -            core->length = sizeof(*core);
> -            core->local_apic_id = apic_id;
> -            core->proximity_lo = node_id;
> -            memset(core->proximity_hi, 0, 3);
> -            core->local_sapic_eid = 0;
> -            core->flags = cpu_to_le32(1);
> +            /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */
> +            build_append_int_noprefix(table_data, 0, 1);  /* Type  */
> +            build_append_int_noprefix(table_data, 16, 1); /* Length */
> +            /* Proximity Domain [7:0] */
> +            build_append_int_noprefix(table_data, node_id, 1);
> +            build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */
> +            /* Flags, Table 5-36 */
> +            build_append_int_noprefix(table_data, 1, 4);
> +            build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */
> +            /* Proximity Domain [31:8] */
> +            build_append_int_noprefix(table_data, 0, 3);
> +            build_append_int_noprefix(table_data, 0, 4); /* Reserved */
clock domain?
>          } else {
> -            AcpiSratProcessorX2ApicAffinity *core;
> -
> -            core = acpi_data_push(table_data, sizeof *core);
> -            core->type = ACPI_SRAT_PROCESSOR_x2APIC;
> -            core->length = sizeof(*core);
> -            core->x2apic_id = cpu_to_le32(apic_id);
> -            core->proximity_domain = cpu_to_le32(node_id);
> -            core->flags = cpu_to_le32(1);
> +            /*
> +             * ACPI spec, Revision 4.0
> +             * 5.2.16.3 Processor Local x2APIC Affinity Structure
> +             */
> +            build_append_int_noprefix(table_data, 2, 1);  /* Type  */
> +            build_append_int_noprefix(table_data, 24, 1); /* Length */
> +            build_append_int_noprefix(table_data, 0, 2); /* Reserved */
> +            /* Proximity Domain */
> +            build_append_int_noprefix(table_data, node_id, 4);
> +            build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */
> +            /* Flags, Table 5-39 */
> +            build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
> +            build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
> +            build_append_int_noprefix(table_data, 0, 4); /* Reserved */
>          }
>      }
>  
> -
>      /* the memory map is a bit tricky, it contains at least one hole
>       * from 640k-1M and possibly another one from 3.5G-4G.
>       */
>      next_base = 0;
> -    numa_start = table_data->len;
> +    numa_mem_start = table_data->len;
>  
>      for (i = 1; i < nb_numa_nodes + 1; ++i) {
>          mem_base = next_base;
> @@ -1985,8 +1994,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>              next_base > HOLE_640K_START) {
>              mem_len -= next_base - HOLE_640K_START;
>              if (mem_len > 0) {
> -                numamem = acpi_data_push(table_data, sizeof *numamem);
> -                build_srat_memory(numamem, mem_base, mem_len, i - 1,
> +                build_srat_memory(table_data, mem_base, mem_len, i - 1,
>                                    MEM_AFFINITY_ENABLED);
>              }
>  
> @@ -2004,8 +2012,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>              next_base > x86ms->below_4g_mem_size) {
>              mem_len -= next_base - x86ms->below_4g_mem_size;
>              if (mem_len > 0) {
> -                numamem = acpi_data_push(table_data, sizeof *numamem);
> -                build_srat_memory(numamem, mem_base, mem_len, i - 1,
> +                build_srat_memory(table_data, mem_base, mem_len, i - 1,
>                                    MEM_AFFINITY_ENABLED);
>              }
>              mem_base = 1ULL << 32;
> @@ -2014,8 +2021,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>          }
>  
>          if (mem_len > 0) {
> -            numamem = acpi_data_push(table_data, sizeof *numamem);
> -            build_srat_memory(numamem, mem_base, mem_len, i - 1,
> +            build_srat_memory(table_data, mem_base, mem_len, i - 1,
>                                MEM_AFFINITY_ENABLED);
>          }
>      }
> @@ -2024,10 +2030,15 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>          nvdimm_build_srat(table_data);
>      }
>  
> -    slots = (table_data->len - numa_start) / sizeof *numamem;
> +    /*
> +     * TODO: this part is not in ACPI spec and current linux kernel boots fine
> +     * without these entries. But I recall there were issues the last time I
> +     * tried to remove it with some ancient guest OS, however I can't remember
> +     * what that was so keep this around for now
> +     */
> +    slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */;
>      for (; slots < nb_numa_nodes + 2; slots++) {
> -        numamem = acpi_data_push(table_data, sizeof *numamem);
> -        build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
> +        build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
>      }
>  
>      /*
> @@ -2039,8 +2050,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>       * providing _PXM method if necessary.
>       */
>      if (hotplugabble_address_space_size) {
> -        numamem = acpi_data_push(table_data, sizeof *numamem);
> -        build_srat_memory(numamem, machine->device_memory->base,
> +        build_srat_memory(table_data, machine->device_memory->base,
>                            hotplugabble_address_space_size, nb_numa_nodes - 1,
>                            MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
>      }
> 
Besides
Reviewed-by: Eric Auger <eric.auger@redhat.com>

Eric
Igor Mammedov Sept. 22, 2021, 10:02 a.m. UTC | #2
On Wed, 22 Sep 2021 10:55:20 +0200
Eric Auger <eauger@redhat.com> wrote:

> On 9/7/21 4:47 PM, Igor Mammedov wrote:
> > Drop usage of packed structures and explicit endian conversions
> > when building SRAT tables for arm/x86 and use endian agnostic
> > build_append_int_noprefix() API to build it.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > ---
> > v3:
> >  * rebase on top of (e77af21a7a2 hw/i386/acpi-build: Get NUMA information from struct NumaState)
> > CC: xiaoguangrong.eric@gmail.com
> > CC: shannon.zhaosl@gmail.com
> > CC: peter.maydell@linaro.org
> > CC: marcel.apfelbaum@gmail.com
> > CC: qemu-arm@nongnu.org
> > CC: drjones@redhat.com
> > CC: eauger@redhat.com
> > ---
> >  include/hw/acpi/acpi-defs.h | 49 -----------------------
> >  include/hw/acpi/aml-build.h |  2 +-
> >  hw/acpi/aml-build.c         | 24 ++++++++----
> >  hw/acpi/nvdimm.c            |  4 +-
> >  hw/arm/virt-acpi-build.c    | 29 ++++++++------
> >  hw/i386/acpi-build.c        | 78 +++++++++++++++++++++----------------
> >  6 files changed, 80 insertions(+), 106 deletions(-)
> > 
> > diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
> > index 5826ee04b6..d293304f9c 100644
> > --- a/include/hw/acpi/acpi-defs.h
> > +++ b/include/hw/acpi/acpi-defs.h
> > @@ -358,55 +358,6 @@ struct AcpiGenericTimerTable {
> >  } QEMU_PACKED;
> >  typedef struct AcpiGenericTimerTable AcpiGenericTimerTable;
> >  
> > -#define ACPI_SRAT_PROCESSOR_APIC     0
> > -#define ACPI_SRAT_MEMORY             1
> > -#define ACPI_SRAT_PROCESSOR_x2APIC   2
> > -#define ACPI_SRAT_PROCESSOR_GICC     3
> > -
> > -struct AcpiSratProcessorAffinity {
> > -    ACPI_SUB_HEADER_DEF
> > -    uint8_t     proximity_lo;
> > -    uint8_t     local_apic_id;
> > -    uint32_t    flags;
> > -    uint8_t     local_sapic_eid;
> > -    uint8_t     proximity_hi[3];
> > -    uint32_t    reserved;
> > -} QEMU_PACKED;
> > -typedef struct AcpiSratProcessorAffinity AcpiSratProcessorAffinity;
> > -
> > -struct AcpiSratProcessorX2ApicAffinity {
> > -    ACPI_SUB_HEADER_DEF
> > -    uint16_t    reserved;
> > -    uint32_t    proximity_domain;
> > -    uint32_t    x2apic_id;
> > -    uint32_t    flags;
> > -    uint32_t    clk_domain;
> > -    uint32_t    reserved2;
> > -} QEMU_PACKED;
> > -typedef struct AcpiSratProcessorX2ApicAffinity AcpiSratProcessorX2ApicAffinity;
> > -
> > -struct AcpiSratMemoryAffinity {
> > -    ACPI_SUB_HEADER_DEF
> > -    uint32_t    proximity;
> > -    uint16_t    reserved1;
> > -    uint64_t    base_addr;
> > -    uint64_t    range_length;
> > -    uint32_t    reserved2;
> > -    uint32_t    flags;
> > -    uint32_t    reserved3[2];
> > -} QEMU_PACKED;
> > -typedef struct AcpiSratMemoryAffinity AcpiSratMemoryAffinity;
> > -
> > -struct AcpiSratProcessorGiccAffinity {
> > -    ACPI_SUB_HEADER_DEF
> > -    uint32_t    proximity;
> > -    uint32_t    acpi_processor_uid;
> > -    uint32_t    flags;
> > -    uint32_t    clock_domain;
> > -} QEMU_PACKED;
> > -
> > -typedef struct AcpiSratProcessorGiccAffinity AcpiSratProcessorGiccAffinity;
> > -
> >  /* DMAR - DMA Remapping table r2.2 */
> >  struct AcpiTableDmar {
> >      ACPI_TABLE_HEADER_DEF
> > diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> > index 4242382399..6e1f42e119 100644
> > --- a/include/hw/acpi/aml-build.h
> > +++ b/include/hw/acpi/aml-build.h
> > @@ -487,7 +487,7 @@ Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set, uint32_t io_offset,
> >                 uint32_t mmio32_offset, uint64_t mmio64_offset,
> >                 uint16_t bus_nr_offset);
> >  
> > -void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
> > +void build_srat_memory(GArray *table_data, uint64_t base,
> >                         uint64_t len, int node, MemoryAffinityFlags flags);
> >  
> >  void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
> > diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> > index 5e8bfb631c..050fdb3f37 100644
> > --- a/hw/acpi/aml-build.c
> > +++ b/hw/acpi/aml-build.c
> > @@ -1936,15 +1936,25 @@ build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
> >      acpi_table_end(linker, &table);
> >  }
> >  
> > -void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
> > +/*
> > + * ACPI spec, Revision 4.0
> > + * 5.2.16.2 Memory Affinity Structure
> > + */
> > +void build_srat_memory(GArray *table_data, uint64_t base,
> >                         uint64_t len, int node, MemoryAffinityFlags flags)
> >  {
> > -    numamem->type = ACPI_SRAT_MEMORY;
> > -    numamem->length = sizeof(*numamem);
> > -    numamem->proximity = cpu_to_le32(node);
> > -    numamem->flags = cpu_to_le32(flags);
> > -    numamem->base_addr = cpu_to_le64(base);
> > -    numamem->range_length = cpu_to_le64(len);
> > +    build_append_int_noprefix(table_data, 1, 1); /* Type */
> > +    build_append_int_noprefix(table_data, 40, 1); /* Length */
> > +    build_append_int_noprefix(table_data, node, 4); /* Proximity Domain */
> > +    build_append_int_noprefix(table_data, 0, 2); /* Reserved */
> > +    build_append_int_noprefix(table_data, base, 4); /* Base Address Low */
> > +    /* Base Address High */
> > +    build_append_int_noprefix(table_data, base >> 32, 4);
> > +    build_append_int_noprefix(table_data, len, 4); /* Length Low */
> > +    build_append_int_noprefix(table_data, len >> 32, 4); /* Length High */
> > +    build_append_int_noprefix(table_data, 0, 4); /* Reserved */
> > +    build_append_int_noprefix(table_data, flags, 4); /* Flags */
> > +    build_append_int_noprefix(table_data, 0, 8); /* Reserved */
> >  }
> >  
> >  /*
> > diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
> > index e050b47c2b..baab81f7a6 100644
> > --- a/hw/acpi/nvdimm.c
> > +++ b/hw/acpi/nvdimm.c
> > @@ -1336,7 +1336,6 @@ void nvdimm_build_srat(GArray *table_data)
> >      GSList *device_list = nvdimm_get_device_list();
> >  
> >      for (; device_list; device_list = device_list->next) {
> > -        AcpiSratMemoryAffinity *numamem = NULL;
> >          DeviceState *dev = device_list->data;
> >          Object *obj = OBJECT(dev);
> >          uint64_t addr, size;
> > @@ -1346,8 +1345,7 @@ void nvdimm_build_srat(GArray *table_data)
> >          addr = object_property_get_uint(obj, PC_DIMM_ADDR_PROP, &error_abort);
> >          size = object_property_get_uint(obj, PC_DIMM_SIZE_PROP, &error_abort);
> >  
> > -        numamem = acpi_data_push(table_data, sizeof *numamem);
> > -        build_srat_memory(numamem, addr, size, node,
> > +        build_srat_memory(table_data, addr, size, node,
> >                            MEM_AFFINITY_ENABLED | MEM_AFFINITY_NON_VOLATILE);
> >      }
> >      g_slist_free(device_list);
> > diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> > index 21efe7fe34..6ba02cf281 100644
> > --- a/hw/arm/virt-acpi-build.c
> > +++ b/hw/arm/virt-acpi-build.c
> > @@ -474,11 +474,13 @@ build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> >                   vms->oem_table_id);
> >  }
> >  
> > +/*
> > + * ACPI spec, Revision 5.1
> > + * 5.2.16 System Resource Affinity Table (SRAT)
> > + */
> >  static void
> >  build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> >  {
> > -    AcpiSratProcessorGiccAffinity *core;
> > -    AcpiSratMemoryAffinity *numamem;
> >      int i;
> >      uint64_t mem_base;
> >      MachineClass *mc = MACHINE_GET_CLASS(vms);
> > @@ -492,19 +494,23 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> >      build_append_int_noprefix(table_data, 0, 8); /* Reserved */
> >  
> >      for (i = 0; i < cpu_list->len; ++i) {
> > -        core = acpi_data_push(table_data, sizeof(*core));
> > -        core->type = ACPI_SRAT_PROCESSOR_GICC;
> > -        core->length = sizeof(*core);
> > -        core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
> > -        core->acpi_processor_uid = cpu_to_le32(i);
> > -        core->flags = cpu_to_le32(1);
> > +        uint32_t nodeid = cpu_list->cpus[i].props.node_id;
> > +        /*
> > +         * 5.2.16.4 GICC Affinity Structure
> > +         */
> > +        build_append_int_noprefix(table_data, 3, 1);      /* Type */
> > +        build_append_int_noprefix(table_data, 18, 1);     /* Length */
> > +        build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
> > +        build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
> > +        /* Flags, Table 5-76 */
> > +        build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
> > +        build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
> >      }
> >  
> >      mem_base = vms->memmap[VIRT_MEM].base;
> >      for (i = 0; i < ms->numa_state->num_nodes; ++i) {
> >          if (ms->numa_state->nodes[i].node_mem > 0) {
> > -            numamem = acpi_data_push(table_data, sizeof(*numamem));
> > -            build_srat_memory(numamem, mem_base,
> > +            build_srat_memory(table_data, mem_base,
> >                                ms->numa_state->nodes[i].node_mem, i,
> >                                MEM_AFFINITY_ENABLED);
> >              mem_base += ms->numa_state->nodes[i].node_mem;
> > @@ -516,8 +522,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
> >      }
> >  
> >      if (ms->device_memory) {
> > -        numamem = acpi_data_push(table_data, sizeof *numamem);
> > -        build_srat_memory(numamem, ms->device_memory->base,
> > +        build_srat_memory(table_data, ms->device_memory->base,
> >                            memory_region_size(&ms->device_memory->mr),
> >                            ms->numa_state->num_nodes - 1,
> >                            MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
> > diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> > index 41c0a63b30..51e0ba07b6 100644
> > --- a/hw/i386/acpi-build.c
> > +++ b/hw/i386/acpi-build.c
> > @@ -1917,13 +1917,15 @@ build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
> >  #define HOLE_640K_START  (640 * KiB)
> >  #define HOLE_640K_END   (1 * MiB)
> >  
> > +/*
> > + * ACPI spec, Revision 3.0
> > + * 5.2.15 System Resource Affinity Table (SRAT)
> > + */
> >  static void
> >  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >  {
> > -    AcpiSratMemoryAffinity *numamem;
> > -
> >      int i;
> > -    int numa_start, slots;
> > +    int numa_mem_start, slots;
> >      uint64_t mem_len, mem_base, next_base;
> >      MachineClass *mc = MACHINE_GET_CLASS(machine);
> >      X86MachineState *x86ms = X86_MACHINE(machine);
> > @@ -1946,34 +1948,41 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >          uint32_t apic_id = apic_ids->cpus[i].arch_id;
> >  
> >          if (apic_id < 255) {
> > -            AcpiSratProcessorAffinity *core;
> > -
> > -            core = acpi_data_push(table_data, sizeof *core);
> > -            core->type = ACPI_SRAT_PROCESSOR_APIC;
> > -            core->length = sizeof(*core);
> > -            core->local_apic_id = apic_id;
> > -            core->proximity_lo = node_id;
> > -            memset(core->proximity_hi, 0, 3);
> > -            core->local_sapic_eid = 0;
> > -            core->flags = cpu_to_le32(1);
> > +            /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */
> > +            build_append_int_noprefix(table_data, 0, 1);  /* Type  */
> > +            build_append_int_noprefix(table_data, 16, 1); /* Length */
> > +            /* Proximity Domain [7:0] */
> > +            build_append_int_noprefix(table_data, node_id, 1);
> > +            build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */
> > +            /* Flags, Table 5-36 */
> > +            build_append_int_noprefix(table_data, 1, 4);
> > +            build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */
> > +            /* Proximity Domain [31:8] */
> > +            build_append_int_noprefix(table_data, 0, 3);
> > +            build_append_int_noprefix(table_data, 0, 4); /* Reserved */  
> clock domain?
not in 3.0,  it was renamed later (4.0)

> >          } else {
> > -            AcpiSratProcessorX2ApicAffinity *core;
> > -
> > -            core = acpi_data_push(table_data, sizeof *core);
> > -            core->type = ACPI_SRAT_PROCESSOR_x2APIC;
> > -            core->length = sizeof(*core);
> > -            core->x2apic_id = cpu_to_le32(apic_id);
> > -            core->proximity_domain = cpu_to_le32(node_id);
> > -            core->flags = cpu_to_le32(1);
> > +            /*
> > +             * ACPI spec, Revision 4.0
> > +             * 5.2.16.3 Processor Local x2APIC Affinity Structure
> > +             */
> > +            build_append_int_noprefix(table_data, 2, 1);  /* Type  */
> > +            build_append_int_noprefix(table_data, 24, 1); /* Length */
> > +            build_append_int_noprefix(table_data, 0, 2); /* Reserved */
> > +            /* Proximity Domain */
> > +            build_append_int_noprefix(table_data, node_id, 4);
> > +            build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */
> > +            /* Flags, Table 5-39 */
> > +            build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
> > +            build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
> > +            build_append_int_noprefix(table_data, 0, 4); /* Reserved */
> >          }
> >      }
> >  
> > -
> >      /* the memory map is a bit tricky, it contains at least one hole
> >       * from 640k-1M and possibly another one from 3.5G-4G.
> >       */
> >      next_base = 0;
> > -    numa_start = table_data->len;
> > +    numa_mem_start = table_data->len;
> >  
> >      for (i = 1; i < nb_numa_nodes + 1; ++i) {
> >          mem_base = next_base;
> > @@ -1985,8 +1994,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >              next_base > HOLE_640K_START) {
> >              mem_len -= next_base - HOLE_640K_START;
> >              if (mem_len > 0) {
> > -                numamem = acpi_data_push(table_data, sizeof *numamem);
> > -                build_srat_memory(numamem, mem_base, mem_len, i - 1,
> > +                build_srat_memory(table_data, mem_base, mem_len, i - 1,
> >                                    MEM_AFFINITY_ENABLED);
> >              }
> >  
> > @@ -2004,8 +2012,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >              next_base > x86ms->below_4g_mem_size) {
> >              mem_len -= next_base - x86ms->below_4g_mem_size;
> >              if (mem_len > 0) {
> > -                numamem = acpi_data_push(table_data, sizeof *numamem);
> > -                build_srat_memory(numamem, mem_base, mem_len, i - 1,
> > +                build_srat_memory(table_data, mem_base, mem_len, i - 1,
> >                                    MEM_AFFINITY_ENABLED);
> >              }
> >              mem_base = 1ULL << 32;
> > @@ -2014,8 +2021,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >          }
> >  
> >          if (mem_len > 0) {
> > -            numamem = acpi_data_push(table_data, sizeof *numamem);
> > -            build_srat_memory(numamem, mem_base, mem_len, i - 1,
> > +            build_srat_memory(table_data, mem_base, mem_len, i - 1,
> >                                MEM_AFFINITY_ENABLED);
> >          }
> >      }
> > @@ -2024,10 +2030,15 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >          nvdimm_build_srat(table_data);
> >      }
> >  
> > -    slots = (table_data->len - numa_start) / sizeof *numamem;
> > +    /*
> > +     * TODO: this part is not in ACPI spec and current linux kernel boots fine
> > +     * without these entries. But I recall there were issues the last time I
> > +     * tried to remove it with some ancient guest OS, however I can't remember
> > +     * what that was so keep this around for now
> > +     */
> > +    slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */;
> >      for (; slots < nb_numa_nodes + 2; slots++) {
> > -        numamem = acpi_data_push(table_data, sizeof *numamem);
> > -        build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
> > +        build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
> >      }
> >  
> >      /*
> > @@ -2039,8 +2050,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
> >       * providing _PXM method if necessary.
> >       */
> >      if (hotplugabble_address_space_size) {
> > -        numamem = acpi_data_push(table_data, sizeof *numamem);
> > -        build_srat_memory(numamem, machine->device_memory->base,
> > +        build_srat_memory(table_data, machine->device_memory->base,
> >                            hotplugabble_address_space_size, nb_numa_nodes - 1,
> >                            MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
> >      }
> >   
> Besides
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> 
> Eric
>
Eric Auger Sept. 22, 2021, 3:32 p.m. UTC | #3
On 9/22/21 12:02 PM, Igor Mammedov wrote:
> On Wed, 22 Sep 2021 10:55:20 +0200
> Eric Auger <eauger@redhat.com> wrote:
> 
>> On 9/7/21 4:47 PM, Igor Mammedov wrote:
>>> Drop usage of packed structures and explicit endian conversions
>>> when building SRAT tables for arm/x86 and use endian agnostic
>>> build_append_int_noprefix() API to build it.
>>>
>>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>>> ---
>>> v3:
>>>  * rebase on top of (e77af21a7a2 hw/i386/acpi-build: Get NUMA information from struct NumaState)
>>> CC: xiaoguangrong.eric@gmail.com
>>> CC: shannon.zhaosl@gmail.com
>>> CC: peter.maydell@linaro.org
>>> CC: marcel.apfelbaum@gmail.com
>>> CC: qemu-arm@nongnu.org
>>> CC: drjones@redhat.com
>>> CC: eauger@redhat.com
>>> ---
>>>  include/hw/acpi/acpi-defs.h | 49 -----------------------
>>>  include/hw/acpi/aml-build.h |  2 +-
>>>  hw/acpi/aml-build.c         | 24 ++++++++----
>>>  hw/acpi/nvdimm.c            |  4 +-
>>>  hw/arm/virt-acpi-build.c    | 29 ++++++++------
>>>  hw/i386/acpi-build.c        | 78 +++++++++++++++++++++----------------
>>>  6 files changed, 80 insertions(+), 106 deletions(-)
>>>
>>> diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
>>> index 5826ee04b6..d293304f9c 100644
>>> --- a/include/hw/acpi/acpi-defs.h
>>> +++ b/include/hw/acpi/acpi-defs.h
>>> @@ -358,55 +358,6 @@ struct AcpiGenericTimerTable {
>>>  } QEMU_PACKED;
>>>  typedef struct AcpiGenericTimerTable AcpiGenericTimerTable;
>>>  
>>> -#define ACPI_SRAT_PROCESSOR_APIC     0
>>> -#define ACPI_SRAT_MEMORY             1
>>> -#define ACPI_SRAT_PROCESSOR_x2APIC   2
>>> -#define ACPI_SRAT_PROCESSOR_GICC     3
>>> -
>>> -struct AcpiSratProcessorAffinity {
>>> -    ACPI_SUB_HEADER_DEF
>>> -    uint8_t     proximity_lo;
>>> -    uint8_t     local_apic_id;
>>> -    uint32_t    flags;
>>> -    uint8_t     local_sapic_eid;
>>> -    uint8_t     proximity_hi[3];
>>> -    uint32_t    reserved;
>>> -} QEMU_PACKED;
>>> -typedef struct AcpiSratProcessorAffinity AcpiSratProcessorAffinity;
>>> -
>>> -struct AcpiSratProcessorX2ApicAffinity {
>>> -    ACPI_SUB_HEADER_DEF
>>> -    uint16_t    reserved;
>>> -    uint32_t    proximity_domain;
>>> -    uint32_t    x2apic_id;
>>> -    uint32_t    flags;
>>> -    uint32_t    clk_domain;
>>> -    uint32_t    reserved2;
>>> -} QEMU_PACKED;
>>> -typedef struct AcpiSratProcessorX2ApicAffinity AcpiSratProcessorX2ApicAffinity;
>>> -
>>> -struct AcpiSratMemoryAffinity {
>>> -    ACPI_SUB_HEADER_DEF
>>> -    uint32_t    proximity;
>>> -    uint16_t    reserved1;
>>> -    uint64_t    base_addr;
>>> -    uint64_t    range_length;
>>> -    uint32_t    reserved2;
>>> -    uint32_t    flags;
>>> -    uint32_t    reserved3[2];
>>> -} QEMU_PACKED;
>>> -typedef struct AcpiSratMemoryAffinity AcpiSratMemoryAffinity;
>>> -
>>> -struct AcpiSratProcessorGiccAffinity {
>>> -    ACPI_SUB_HEADER_DEF
>>> -    uint32_t    proximity;
>>> -    uint32_t    acpi_processor_uid;
>>> -    uint32_t    flags;
>>> -    uint32_t    clock_domain;
>>> -} QEMU_PACKED;
>>> -
>>> -typedef struct AcpiSratProcessorGiccAffinity AcpiSratProcessorGiccAffinity;
>>> -
>>>  /* DMAR - DMA Remapping table r2.2 */
>>>  struct AcpiTableDmar {
>>>      ACPI_TABLE_HEADER_DEF
>>> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
>>> index 4242382399..6e1f42e119 100644
>>> --- a/include/hw/acpi/aml-build.h
>>> +++ b/include/hw/acpi/aml-build.h
>>> @@ -487,7 +487,7 @@ Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set, uint32_t io_offset,
>>>                 uint32_t mmio32_offset, uint64_t mmio64_offset,
>>>                 uint16_t bus_nr_offset);
>>>  
>>> -void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
>>> +void build_srat_memory(GArray *table_data, uint64_t base,
>>>                         uint64_t len, int node, MemoryAffinityFlags flags);
>>>  
>>>  void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
>>> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
>>> index 5e8bfb631c..050fdb3f37 100644
>>> --- a/hw/acpi/aml-build.c
>>> +++ b/hw/acpi/aml-build.c
>>> @@ -1936,15 +1936,25 @@ build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
>>>      acpi_table_end(linker, &table);
>>>  }
>>>  
>>> -void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
>>> +/*
>>> + * ACPI spec, Revision 4.0
>>> + * 5.2.16.2 Memory Affinity Structure
>>> + */
>>> +void build_srat_memory(GArray *table_data, uint64_t base,
>>>                         uint64_t len, int node, MemoryAffinityFlags flags)
>>>  {
>>> -    numamem->type = ACPI_SRAT_MEMORY;
>>> -    numamem->length = sizeof(*numamem);
>>> -    numamem->proximity = cpu_to_le32(node);
>>> -    numamem->flags = cpu_to_le32(flags);
>>> -    numamem->base_addr = cpu_to_le64(base);
>>> -    numamem->range_length = cpu_to_le64(len);
>>> +    build_append_int_noprefix(table_data, 1, 1); /* Type */
>>> +    build_append_int_noprefix(table_data, 40, 1); /* Length */
>>> +    build_append_int_noprefix(table_data, node, 4); /* Proximity Domain */
>>> +    build_append_int_noprefix(table_data, 0, 2); /* Reserved */
>>> +    build_append_int_noprefix(table_data, base, 4); /* Base Address Low */
>>> +    /* Base Address High */
>>> +    build_append_int_noprefix(table_data, base >> 32, 4);
>>> +    build_append_int_noprefix(table_data, len, 4); /* Length Low */
>>> +    build_append_int_noprefix(table_data, len >> 32, 4); /* Length High */
>>> +    build_append_int_noprefix(table_data, 0, 4); /* Reserved */
>>> +    build_append_int_noprefix(table_data, flags, 4); /* Flags */
>>> +    build_append_int_noprefix(table_data, 0, 8); /* Reserved */
>>>  }
>>>  
>>>  /*
>>> diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
>>> index e050b47c2b..baab81f7a6 100644
>>> --- a/hw/acpi/nvdimm.c
>>> +++ b/hw/acpi/nvdimm.c
>>> @@ -1336,7 +1336,6 @@ void nvdimm_build_srat(GArray *table_data)
>>>      GSList *device_list = nvdimm_get_device_list();
>>>  
>>>      for (; device_list; device_list = device_list->next) {
>>> -        AcpiSratMemoryAffinity *numamem = NULL;
>>>          DeviceState *dev = device_list->data;
>>>          Object *obj = OBJECT(dev);
>>>          uint64_t addr, size;
>>> @@ -1346,8 +1345,7 @@ void nvdimm_build_srat(GArray *table_data)
>>>          addr = object_property_get_uint(obj, PC_DIMM_ADDR_PROP, &error_abort);
>>>          size = object_property_get_uint(obj, PC_DIMM_SIZE_PROP, &error_abort);
>>>  
>>> -        numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -        build_srat_memory(numamem, addr, size, node,
>>> +        build_srat_memory(table_data, addr, size, node,
>>>                            MEM_AFFINITY_ENABLED | MEM_AFFINITY_NON_VOLATILE);
>>>      }
>>>      g_slist_free(device_list);
>>> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
>>> index 21efe7fe34..6ba02cf281 100644
>>> --- a/hw/arm/virt-acpi-build.c
>>> +++ b/hw/arm/virt-acpi-build.c
>>> @@ -474,11 +474,13 @@ build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>>>                   vms->oem_table_id);
>>>  }
>>>  
>>> +/*
>>> + * ACPI spec, Revision 5.1
>>> + * 5.2.16 System Resource Affinity Table (SRAT)
>>> + */
>>>  static void
>>>  build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>>>  {
>>> -    AcpiSratProcessorGiccAffinity *core;
>>> -    AcpiSratMemoryAffinity *numamem;
>>>      int i;
>>>      uint64_t mem_base;
>>>      MachineClass *mc = MACHINE_GET_CLASS(vms);
>>> @@ -492,19 +494,23 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>>>      build_append_int_noprefix(table_data, 0, 8); /* Reserved */
>>>  
>>>      for (i = 0; i < cpu_list->len; ++i) {
>>> -        core = acpi_data_push(table_data, sizeof(*core));
>>> -        core->type = ACPI_SRAT_PROCESSOR_GICC;
>>> -        core->length = sizeof(*core);
>>> -        core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
>>> -        core->acpi_processor_uid = cpu_to_le32(i);
>>> -        core->flags = cpu_to_le32(1);
>>> +        uint32_t nodeid = cpu_list->cpus[i].props.node_id;
>>> +        /*
>>> +         * 5.2.16.4 GICC Affinity Structure
>>> +         */
>>> +        build_append_int_noprefix(table_data, 3, 1);      /* Type */
>>> +        build_append_int_noprefix(table_data, 18, 1);     /* Length */
>>> +        build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
>>> +        build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
>>> +        /* Flags, Table 5-76 */
>>> +        build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
>>> +        build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
>>>      }
>>>  
>>>      mem_base = vms->memmap[VIRT_MEM].base;
>>>      for (i = 0; i < ms->numa_state->num_nodes; ++i) {
>>>          if (ms->numa_state->nodes[i].node_mem > 0) {
>>> -            numamem = acpi_data_push(table_data, sizeof(*numamem));
>>> -            build_srat_memory(numamem, mem_base,
>>> +            build_srat_memory(table_data, mem_base,
>>>                                ms->numa_state->nodes[i].node_mem, i,
>>>                                MEM_AFFINITY_ENABLED);
>>>              mem_base += ms->numa_state->nodes[i].node_mem;
>>> @@ -516,8 +522,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
>>>      }
>>>  
>>>      if (ms->device_memory) {
>>> -        numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -        build_srat_memory(numamem, ms->device_memory->base,
>>> +        build_srat_memory(table_data, ms->device_memory->base,
>>>                            memory_region_size(&ms->device_memory->mr),
>>>                            ms->numa_state->num_nodes - 1,
>>>                            MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
>>> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
>>> index 41c0a63b30..51e0ba07b6 100644
>>> --- a/hw/i386/acpi-build.c
>>> +++ b/hw/i386/acpi-build.c
>>> @@ -1917,13 +1917,15 @@ build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
>>>  #define HOLE_640K_START  (640 * KiB)
>>>  #define HOLE_640K_END   (1 * MiB)
>>>  
>>> +/*
>>> + * ACPI spec, Revision 3.0
>>> + * 5.2.15 System Resource Affinity Table (SRAT)
>>> + */
>>>  static void
>>>  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>  {
>>> -    AcpiSratMemoryAffinity *numamem;
>>> -
>>>      int i;
>>> -    int numa_start, slots;
>>> +    int numa_mem_start, slots;
>>>      uint64_t mem_len, mem_base, next_base;
>>>      MachineClass *mc = MACHINE_GET_CLASS(machine);
>>>      X86MachineState *x86ms = X86_MACHINE(machine);
>>> @@ -1946,34 +1948,41 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>          uint32_t apic_id = apic_ids->cpus[i].arch_id;
>>>  
>>>          if (apic_id < 255) {
>>> -            AcpiSratProcessorAffinity *core;
>>> -
>>> -            core = acpi_data_push(table_data, sizeof *core);
>>> -            core->type = ACPI_SRAT_PROCESSOR_APIC;
>>> -            core->length = sizeof(*core);
>>> -            core->local_apic_id = apic_id;
>>> -            core->proximity_lo = node_id;
>>> -            memset(core->proximity_hi, 0, 3);
>>> -            core->local_sapic_eid = 0;
>>> -            core->flags = cpu_to_le32(1);
>>> +            /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */
>>> +            build_append_int_noprefix(table_data, 0, 1);  /* Type  */
>>> +            build_append_int_noprefix(table_data, 16, 1); /* Length */
>>> +            /* Proximity Domain [7:0] */
>>> +            build_append_int_noprefix(table_data, node_id, 1);
>>> +            build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */
>>> +            /* Flags, Table 5-36 */
>>> +            build_append_int_noprefix(table_data, 1, 4);
>>> +            build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */
>>> +            /* Proximity Domain [31:8] */
>>> +            build_append_int_noprefix(table_data, 0, 3);
>>> +            build_append_int_noprefix(table_data, 0, 4); /* Reserved */  
>> clock domain?
> not in 3.0,  it was renamed later (4.0)
OK I must have looked at some other version. Not always easy to find
older ones.

Eric
> 
>>>          } else {
>>> -            AcpiSratProcessorX2ApicAffinity *core;
>>> -
>>> -            core = acpi_data_push(table_data, sizeof *core);
>>> -            core->type = ACPI_SRAT_PROCESSOR_x2APIC;
>>> -            core->length = sizeof(*core);
>>> -            core->x2apic_id = cpu_to_le32(apic_id);
>>> -            core->proximity_domain = cpu_to_le32(node_id);
>>> -            core->flags = cpu_to_le32(1);
>>> +            /*
>>> +             * ACPI spec, Revision 4.0
>>> +             * 5.2.16.3 Processor Local x2APIC Affinity Structure
>>> +             */
>>> +            build_append_int_noprefix(table_data, 2, 1);  /* Type  */
>>> +            build_append_int_noprefix(table_data, 24, 1); /* Length */
>>> +            build_append_int_noprefix(table_data, 0, 2); /* Reserved */
>>> +            /* Proximity Domain */
>>> +            build_append_int_noprefix(table_data, node_id, 4);
>>> +            build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */
>>> +            /* Flags, Table 5-39 */
>>> +            build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
>>> +            build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
>>> +            build_append_int_noprefix(table_data, 0, 4); /* Reserved */
>>>          }
>>>      }
>>>  
>>> -
>>>      /* the memory map is a bit tricky, it contains at least one hole
>>>       * from 640k-1M and possibly another one from 3.5G-4G.
>>>       */
>>>      next_base = 0;
>>> -    numa_start = table_data->len;
>>> +    numa_mem_start = table_data->len;
>>>  
>>>      for (i = 1; i < nb_numa_nodes + 1; ++i) {
>>>          mem_base = next_base;
>>> @@ -1985,8 +1994,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>              next_base > HOLE_640K_START) {
>>>              mem_len -= next_base - HOLE_640K_START;
>>>              if (mem_len > 0) {
>>> -                numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -                build_srat_memory(numamem, mem_base, mem_len, i - 1,
>>> +                build_srat_memory(table_data, mem_base, mem_len, i - 1,
>>>                                    MEM_AFFINITY_ENABLED);
>>>              }
>>>  
>>> @@ -2004,8 +2012,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>              next_base > x86ms->below_4g_mem_size) {
>>>              mem_len -= next_base - x86ms->below_4g_mem_size;
>>>              if (mem_len > 0) {
>>> -                numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -                build_srat_memory(numamem, mem_base, mem_len, i - 1,
>>> +                build_srat_memory(table_data, mem_base, mem_len, i - 1,
>>>                                    MEM_AFFINITY_ENABLED);
>>>              }
>>>              mem_base = 1ULL << 32;
>>> @@ -2014,8 +2021,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>          }
>>>  
>>>          if (mem_len > 0) {
>>> -            numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -            build_srat_memory(numamem, mem_base, mem_len, i - 1,
>>> +            build_srat_memory(table_data, mem_base, mem_len, i - 1,
>>>                                MEM_AFFINITY_ENABLED);
>>>          }
>>>      }
>>> @@ -2024,10 +2030,15 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>          nvdimm_build_srat(table_data);
>>>      }
>>>  
>>> -    slots = (table_data->len - numa_start) / sizeof *numamem;
>>> +    /*
>>> +     * TODO: this part is not in ACPI spec and current linux kernel boots fine
>>> +     * without these entries. But I recall there were issues the last time I
>>> +     * tried to remove it with some ancient guest OS, however I can't remember
>>> +     * what that was so keep this around for now
>>> +     */
>>> +    slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */;
>>>      for (; slots < nb_numa_nodes + 2; slots++) {
>>> -        numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -        build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
>>> +        build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
>>>      }
>>>  
>>>      /*
>>> @@ -2039,8 +2050,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
>>>       * providing _PXM method if necessary.
>>>       */
>>>      if (hotplugabble_address_space_size) {
>>> -        numamem = acpi_data_push(table_data, sizeof *numamem);
>>> -        build_srat_memory(numamem, machine->device_memory->base,
>>> +        build_srat_memory(table_data, machine->device_memory->base,
>>>                            hotplugabble_address_space_size, nb_numa_nodes - 1,
>>>                            MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
>>>      }
>>>   
>> Besides
>> Reviewed-by: Eric Auger <eric.auger@redhat.com>
>>
>> Eric
>>
>
diff mbox series

Patch

diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index 5826ee04b6..d293304f9c 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -358,55 +358,6 @@  struct AcpiGenericTimerTable {
 } QEMU_PACKED;
 typedef struct AcpiGenericTimerTable AcpiGenericTimerTable;
 
-#define ACPI_SRAT_PROCESSOR_APIC     0
-#define ACPI_SRAT_MEMORY             1
-#define ACPI_SRAT_PROCESSOR_x2APIC   2
-#define ACPI_SRAT_PROCESSOR_GICC     3
-
-struct AcpiSratProcessorAffinity {
-    ACPI_SUB_HEADER_DEF
-    uint8_t     proximity_lo;
-    uint8_t     local_apic_id;
-    uint32_t    flags;
-    uint8_t     local_sapic_eid;
-    uint8_t     proximity_hi[3];
-    uint32_t    reserved;
-} QEMU_PACKED;
-typedef struct AcpiSratProcessorAffinity AcpiSratProcessorAffinity;
-
-struct AcpiSratProcessorX2ApicAffinity {
-    ACPI_SUB_HEADER_DEF
-    uint16_t    reserved;
-    uint32_t    proximity_domain;
-    uint32_t    x2apic_id;
-    uint32_t    flags;
-    uint32_t    clk_domain;
-    uint32_t    reserved2;
-} QEMU_PACKED;
-typedef struct AcpiSratProcessorX2ApicAffinity AcpiSratProcessorX2ApicAffinity;
-
-struct AcpiSratMemoryAffinity {
-    ACPI_SUB_HEADER_DEF
-    uint32_t    proximity;
-    uint16_t    reserved1;
-    uint64_t    base_addr;
-    uint64_t    range_length;
-    uint32_t    reserved2;
-    uint32_t    flags;
-    uint32_t    reserved3[2];
-} QEMU_PACKED;
-typedef struct AcpiSratMemoryAffinity AcpiSratMemoryAffinity;
-
-struct AcpiSratProcessorGiccAffinity {
-    ACPI_SUB_HEADER_DEF
-    uint32_t    proximity;
-    uint32_t    acpi_processor_uid;
-    uint32_t    flags;
-    uint32_t    clock_domain;
-} QEMU_PACKED;
-
-typedef struct AcpiSratProcessorGiccAffinity AcpiSratProcessorGiccAffinity;
-
 /* DMAR - DMA Remapping table r2.2 */
 struct AcpiTableDmar {
     ACPI_TABLE_HEADER_DEF
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 4242382399..6e1f42e119 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -487,7 +487,7 @@  Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set, uint32_t io_offset,
                uint32_t mmio32_offset, uint64_t mmio64_offset,
                uint16_t bus_nr_offset);
 
-void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
+void build_srat_memory(GArray *table_data, uint64_t base,
                        uint64_t len, int node, MemoryAffinityFlags flags);
 
 void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 5e8bfb631c..050fdb3f37 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1936,15 +1936,25 @@  build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
     acpi_table_end(linker, &table);
 }
 
-void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
+/*
+ * ACPI spec, Revision 4.0
+ * 5.2.16.2 Memory Affinity Structure
+ */
+void build_srat_memory(GArray *table_data, uint64_t base,
                        uint64_t len, int node, MemoryAffinityFlags flags)
 {
-    numamem->type = ACPI_SRAT_MEMORY;
-    numamem->length = sizeof(*numamem);
-    numamem->proximity = cpu_to_le32(node);
-    numamem->flags = cpu_to_le32(flags);
-    numamem->base_addr = cpu_to_le64(base);
-    numamem->range_length = cpu_to_le64(len);
+    build_append_int_noprefix(table_data, 1, 1); /* Type */
+    build_append_int_noprefix(table_data, 40, 1); /* Length */
+    build_append_int_noprefix(table_data, node, 4); /* Proximity Domain */
+    build_append_int_noprefix(table_data, 0, 2); /* Reserved */
+    build_append_int_noprefix(table_data, base, 4); /* Base Address Low */
+    /* Base Address High */
+    build_append_int_noprefix(table_data, base >> 32, 4);
+    build_append_int_noprefix(table_data, len, 4); /* Length Low */
+    build_append_int_noprefix(table_data, len >> 32, 4); /* Length High */
+    build_append_int_noprefix(table_data, 0, 4); /* Reserved */
+    build_append_int_noprefix(table_data, flags, 4); /* Flags */
+    build_append_int_noprefix(table_data, 0, 8); /* Reserved */
 }
 
 /*
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
index e050b47c2b..baab81f7a6 100644
--- a/hw/acpi/nvdimm.c
+++ b/hw/acpi/nvdimm.c
@@ -1336,7 +1336,6 @@  void nvdimm_build_srat(GArray *table_data)
     GSList *device_list = nvdimm_get_device_list();
 
     for (; device_list; device_list = device_list->next) {
-        AcpiSratMemoryAffinity *numamem = NULL;
         DeviceState *dev = device_list->data;
         Object *obj = OBJECT(dev);
         uint64_t addr, size;
@@ -1346,8 +1345,7 @@  void nvdimm_build_srat(GArray *table_data)
         addr = object_property_get_uint(obj, PC_DIMM_ADDR_PROP, &error_abort);
         size = object_property_get_uint(obj, PC_DIMM_SIZE_PROP, &error_abort);
 
-        numamem = acpi_data_push(table_data, sizeof *numamem);
-        build_srat_memory(numamem, addr, size, node,
+        build_srat_memory(table_data, addr, size, node,
                           MEM_AFFINITY_ENABLED | MEM_AFFINITY_NON_VOLATILE);
     }
     g_slist_free(device_list);
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 21efe7fe34..6ba02cf281 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -474,11 +474,13 @@  build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
                  vms->oem_table_id);
 }
 
+/*
+ * ACPI spec, Revision 5.1
+ * 5.2.16 System Resource Affinity Table (SRAT)
+ */
 static void
 build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 {
-    AcpiSratProcessorGiccAffinity *core;
-    AcpiSratMemoryAffinity *numamem;
     int i;
     uint64_t mem_base;
     MachineClass *mc = MACHINE_GET_CLASS(vms);
@@ -492,19 +494,23 @@  build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
     build_append_int_noprefix(table_data, 0, 8); /* Reserved */
 
     for (i = 0; i < cpu_list->len; ++i) {
-        core = acpi_data_push(table_data, sizeof(*core));
-        core->type = ACPI_SRAT_PROCESSOR_GICC;
-        core->length = sizeof(*core);
-        core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
-        core->acpi_processor_uid = cpu_to_le32(i);
-        core->flags = cpu_to_le32(1);
+        uint32_t nodeid = cpu_list->cpus[i].props.node_id;
+        /*
+         * 5.2.16.4 GICC Affinity Structure
+         */
+        build_append_int_noprefix(table_data, 3, 1);      /* Type */
+        build_append_int_noprefix(table_data, 18, 1);     /* Length */
+        build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
+        build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
+        /* Flags, Table 5-76 */
+        build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
+        build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
     }
 
     mem_base = vms->memmap[VIRT_MEM].base;
     for (i = 0; i < ms->numa_state->num_nodes; ++i) {
         if (ms->numa_state->nodes[i].node_mem > 0) {
-            numamem = acpi_data_push(table_data, sizeof(*numamem));
-            build_srat_memory(numamem, mem_base,
+            build_srat_memory(table_data, mem_base,
                               ms->numa_state->nodes[i].node_mem, i,
                               MEM_AFFINITY_ENABLED);
             mem_base += ms->numa_state->nodes[i].node_mem;
@@ -516,8 +522,7 @@  build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
     }
 
     if (ms->device_memory) {
-        numamem = acpi_data_push(table_data, sizeof *numamem);
-        build_srat_memory(numamem, ms->device_memory->base,
+        build_srat_memory(table_data, ms->device_memory->base,
                           memory_region_size(&ms->device_memory->mr),
                           ms->numa_state->num_nodes - 1,
                           MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 41c0a63b30..51e0ba07b6 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1917,13 +1917,15 @@  build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
 #define HOLE_640K_START  (640 * KiB)
 #define HOLE_640K_END   (1 * MiB)
 
+/*
+ * ACPI spec, Revision 3.0
+ * 5.2.15 System Resource Affinity Table (SRAT)
+ */
 static void
 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
 {
-    AcpiSratMemoryAffinity *numamem;
-
     int i;
-    int numa_start, slots;
+    int numa_mem_start, slots;
     uint64_t mem_len, mem_base, next_base;
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     X86MachineState *x86ms = X86_MACHINE(machine);
@@ -1946,34 +1948,41 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
         uint32_t apic_id = apic_ids->cpus[i].arch_id;
 
         if (apic_id < 255) {
-            AcpiSratProcessorAffinity *core;
-
-            core = acpi_data_push(table_data, sizeof *core);
-            core->type = ACPI_SRAT_PROCESSOR_APIC;
-            core->length = sizeof(*core);
-            core->local_apic_id = apic_id;
-            core->proximity_lo = node_id;
-            memset(core->proximity_hi, 0, 3);
-            core->local_sapic_eid = 0;
-            core->flags = cpu_to_le32(1);
+            /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */
+            build_append_int_noprefix(table_data, 0, 1);  /* Type  */
+            build_append_int_noprefix(table_data, 16, 1); /* Length */
+            /* Proximity Domain [7:0] */
+            build_append_int_noprefix(table_data, node_id, 1);
+            build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */
+            /* Flags, Table 5-36 */
+            build_append_int_noprefix(table_data, 1, 4);
+            build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */
+            /* Proximity Domain [31:8] */
+            build_append_int_noprefix(table_data, 0, 3);
+            build_append_int_noprefix(table_data, 0, 4); /* Reserved */
         } else {
-            AcpiSratProcessorX2ApicAffinity *core;
-
-            core = acpi_data_push(table_data, sizeof *core);
-            core->type = ACPI_SRAT_PROCESSOR_x2APIC;
-            core->length = sizeof(*core);
-            core->x2apic_id = cpu_to_le32(apic_id);
-            core->proximity_domain = cpu_to_le32(node_id);
-            core->flags = cpu_to_le32(1);
+            /*
+             * ACPI spec, Revision 4.0
+             * 5.2.16.3 Processor Local x2APIC Affinity Structure
+             */
+            build_append_int_noprefix(table_data, 2, 1);  /* Type  */
+            build_append_int_noprefix(table_data, 24, 1); /* Length */
+            build_append_int_noprefix(table_data, 0, 2); /* Reserved */
+            /* Proximity Domain */
+            build_append_int_noprefix(table_data, node_id, 4);
+            build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */
+            /* Flags, Table 5-39 */
+            build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
+            build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
+            build_append_int_noprefix(table_data, 0, 4); /* Reserved */
         }
     }
 
-
     /* the memory map is a bit tricky, it contains at least one hole
      * from 640k-1M and possibly another one from 3.5G-4G.
      */
     next_base = 0;
-    numa_start = table_data->len;
+    numa_mem_start = table_data->len;
 
     for (i = 1; i < nb_numa_nodes + 1; ++i) {
         mem_base = next_base;
@@ -1985,8 +1994,7 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
             next_base > HOLE_640K_START) {
             mem_len -= next_base - HOLE_640K_START;
             if (mem_len > 0) {
-                numamem = acpi_data_push(table_data, sizeof *numamem);
-                build_srat_memory(numamem, mem_base, mem_len, i - 1,
+                build_srat_memory(table_data, mem_base, mem_len, i - 1,
                                   MEM_AFFINITY_ENABLED);
             }
 
@@ -2004,8 +2012,7 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
             next_base > x86ms->below_4g_mem_size) {
             mem_len -= next_base - x86ms->below_4g_mem_size;
             if (mem_len > 0) {
-                numamem = acpi_data_push(table_data, sizeof *numamem);
-                build_srat_memory(numamem, mem_base, mem_len, i - 1,
+                build_srat_memory(table_data, mem_base, mem_len, i - 1,
                                   MEM_AFFINITY_ENABLED);
             }
             mem_base = 1ULL << 32;
@@ -2014,8 +2021,7 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
         }
 
         if (mem_len > 0) {
-            numamem = acpi_data_push(table_data, sizeof *numamem);
-            build_srat_memory(numamem, mem_base, mem_len, i - 1,
+            build_srat_memory(table_data, mem_base, mem_len, i - 1,
                               MEM_AFFINITY_ENABLED);
         }
     }
@@ -2024,10 +2030,15 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
         nvdimm_build_srat(table_data);
     }
 
-    slots = (table_data->len - numa_start) / sizeof *numamem;
+    /*
+     * TODO: this part is not in ACPI spec and current linux kernel boots fine
+     * without these entries. But I recall there were issues the last time I
+     * tried to remove it with some ancient guest OS, however I can't remember
+     * what that was so keep this around for now
+     */
+    slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */;
     for (; slots < nb_numa_nodes + 2; slots++) {
-        numamem = acpi_data_push(table_data, sizeof *numamem);
-        build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
+        build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
     }
 
     /*
@@ -2039,8 +2050,7 @@  build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
      * providing _PXM method if necessary.
      */
     if (hotplugabble_address_space_size) {
-        numamem = acpi_data_push(table_data, sizeof *numamem);
-        build_srat_memory(numamem, machine->device_memory->base,
+        build_srat_memory(table_data, machine->device_memory->base,
                           hotplugabble_address_space_size, nb_numa_nodes - 1,
                           MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
     }