From 1c9b7b7e76a63738721ac1092fdfff12ae87993a Mon Sep 17 00:00:00 2001 From: Bibo Mao Date: Wed, 15 May 2024 17:39:22 +0800 Subject: [PATCH 23/78] hw/loongarch: Refine acpi srat table for numa memory One LoongArch virt machine platform, there is limitation for memory map information. The minimum memory size is 256M and minimum memory size for numa node0 is 256M also. With qemu numa qtest, it is possible that memory size of numa node0 is 128M. Limitations for minimum memory size for both total memory and numa node0 is removed for acpi srat table creation. Signed-off-by: Bibo Mao Reviewed-by: Song Gao Message-Id: <20240515093927.3453674-2-maobibo@loongson.cn> Signed-off-by: Song Gao Signed-off-by: Xianglai Li --- hw/loongarch/acpi-build.c | 58 +++++++++++++++++++++++---------------- 1 file changed, 34 insertions(+), 24 deletions(-) diff --git a/hw/loongarch/acpi-build.c b/hw/loongarch/acpi-build.c index 2b4e09bf37..2555c6763c 100644 --- a/hw/loongarch/acpi-build.c +++ b/hw/loongarch/acpi-build.c @@ -166,8 +166,9 @@ static void build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) { int i, arch_id, node_id; - uint64_t mem_len, mem_base; - int nb_numa_nodes = machine->numa_state->num_nodes; + hwaddr len, base, gap; + NodeInfo *numa_info; + int nodes, nb_numa_nodes = machine->numa_state->num_nodes; LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(machine); MachineClass *mc = MACHINE_GET_CLASS(lvms); const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine); @@ -196,35 +197,44 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } - /* Node0 */ - build_srat_memory(table_data, VIRT_LOWMEM_BASE, VIRT_LOWMEM_SIZE, - 0, MEM_AFFINITY_ENABLED); - mem_base = VIRT_HIGHMEM_BASE; - if (!nb_numa_nodes) { - mem_len = machine->ram_size - VIRT_LOWMEM_SIZE; - } else { - mem_len = machine->numa_state->nodes[0].node_mem - VIRT_LOWMEM_SIZE; + base = VIRT_LOWMEM_BASE; + gap = VIRT_LOWMEM_SIZE; + numa_info = machine->numa_state->nodes; + nodes = nb_numa_nodes; + if (!nodes) { + nodes = 1; } - if (mem_len) - build_srat_memory(table_data, mem_base, mem_len, 0, MEM_AFFINITY_ENABLED); - - /* Node1 - Nodemax */ - if (nb_numa_nodes) { - mem_base += mem_len; - for (i = 1; i < nb_numa_nodes; ++i) { - if (machine->numa_state->nodes[i].node_mem > 0) { - build_srat_memory(table_data, mem_base, - machine->numa_state->nodes[i].node_mem, i, - MEM_AFFINITY_ENABLED); - mem_base += machine->numa_state->nodes[i].node_mem; - } + + for (i = 0; i < nodes; i++) { + if (nb_numa_nodes) { + len = numa_info[i].node_mem; + } else { + len = machine->ram_size; + } + + /* + * memory for the node splited into two part + * lowram: [base, +gap) + * highram: [VIRT_HIGHMEM_BASE, +(len - gap)) + */ + if (len >= gap) { + build_srat_memory(table_data, base, len, i, MEM_AFFINITY_ENABLED); + len -= gap; + base = VIRT_HIGHMEM_BASE; + gap = machine->ram_size - VIRT_LOWMEM_SIZE; + } + + if (len) { + build_srat_memory(table_data, base, len, i, MEM_AFFINITY_ENABLED); + base += len; + gap -= len; } } if (machine->device_memory) { build_srat_memory(table_data, machine->device_memory->base, memory_region_size(&machine->device_memory->mr), - nb_numa_nodes - 1, + nodes - 1, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); } -- 2.39.1