diff options
| -rw-r--r-- | hw/i386/acpi-build.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 6ff7fa3980..ebc5f034e3 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1199,6 +1199,10 @@ build_srat(GArray *table_data, GArray *linker, uint64_t curnode; int srat_start, numa_start, slots; uint64_t mem_len, mem_base, next_base; + PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); + ram_addr_t hotplugabble_address_space_size = + object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE, + NULL); srat_start = table_data->len; @@ -1263,6 +1267,19 @@ build_srat(GArray *table_data, GArray *linker, acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS); } + /* + * Entry is required for Windows to enable memory hotplug in OS. + * Memory devices may override proximity set by this entry, + * providing _PXM method if necessary. + */ + if (hotplugabble_address_space_size) { + numamem = acpi_data_push(table_data, sizeof *numamem); + acpi_build_srat_memory(numamem, pcms->hotplug_memory_base, + hotplugabble_address_space_size, 0, + MEM_AFFINITY_HOTPLUGGABLE | + MEM_AFFINITY_ENABLED); + } + build_header(linker, table_data, (void *)(table_data->data + srat_start), "SRAT", |