From d39247ec5d4ef52a4b9422aaecccc284cbd1a5dd Mon Sep 17 00:00:00 2001 From: Bibo Mao Date: Wed, 15 May 2024 17:39:23 +0800 Subject: [PATCH 24/78] hw/loongarch: Refine fadt memory 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 fadt numa memory table creation. Signed-off-by: Bibo Mao Reviewed-by: Song Gao Message-Id: <20240515093927.3453674-3-maobibo@loongson.cn> Signed-off-by: Song Gao Signed-off-by: Xianglai Li --- hw/loongarch/virt.c | 46 ++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 43 insertions(+), 3 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index c3514f9293..31a2598e7c 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -502,6 +502,48 @@ static void fdt_add_memory_node(MachineState *ms, g_free(nodename); } +static void fdt_add_memory_nodes(MachineState *ms) +{ + hwaddr base, size, ram_size, gap; + int i, nb_numa_nodes, nodes; + NodeInfo *numa_info; + + ram_size = ms->ram_size; + base = VIRT_LOWMEM_BASE; + gap = VIRT_LOWMEM_SIZE; + nodes = nb_numa_nodes = ms->numa_state->num_nodes; + numa_info = ms->numa_state->nodes; + if (!nodes) { + nodes = 1; + } + + for (i = 0; i < nodes; i++) { + if (nb_numa_nodes) { + size = numa_info[i].node_mem; + } else { + size = ram_size; + } + + /* + * memory for the node splited into two part + * lowram: [base, +gap) + * highram: [VIRT_HIGHMEM_BASE, +(len - gap)) + */ + if (size >= gap) { + fdt_add_memory_node(ms, base, gap, i); + size -= gap; + base = VIRT_HIGHMEM_BASE; + gap = ram_size - VIRT_LOWMEM_SIZE; + } + + if (size) { + fdt_add_memory_node(ms, base, size, i); + base += size; + gap -= size; + } + } +} + static void virt_build_smbios(LoongArchVirtMachineState *lvms) { MachineState *ms = MACHINE(lvms); @@ -1008,10 +1050,10 @@ static void virt_init(MachineState *machine) lacpu->phy_id = machine->possible_cpus->cpus[i].arch_id; } fdt_add_cpu_nodes(lvms); + fdt_add_memory_nodes(machine); /* Node0 memory */ memmap_add_entry(VIRT_LOWMEM_BASE, VIRT_LOWMEM_SIZE, 1); - fdt_add_memory_node(machine, VIRT_LOWMEM_BASE, VIRT_LOWMEM_SIZE, 0); memory_region_init_alias(&lvms->lowmem, NULL, "loongarch.node0.lowram", machine->ram, offset, VIRT_LOWMEM_SIZE); memory_region_add_subregion(address_space_mem, phyAddr, &lvms->lowmem); @@ -1025,7 +1067,6 @@ static void virt_init(MachineState *machine) } phyAddr = VIRT_HIGHMEM_BASE; memmap_add_entry(phyAddr, highram_size, 1); - fdt_add_memory_node(machine, phyAddr, highram_size, 0); memory_region_init_alias(&lvms->highmem, NULL, "loongarch.node0.highram", machine->ram, offset, highram_size); memory_region_add_subregion(address_space_mem, phyAddr, &lvms->highmem); @@ -1041,7 +1082,6 @@ static void virt_init(MachineState *machine) offset, numa_info[i].node_mem); memory_region_add_subregion(address_space_mem, phyAddr, nodemem); memmap_add_entry(phyAddr, numa_info[i].node_mem, 1); - fdt_add_memory_node(machine, phyAddr, numa_info[i].node_mem, i); offset += numa_info[i].node_mem; phyAddr += numa_info[i].node_mem; } -- 2.39.1