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LoongArch: Fix NUMA node parsing with numa_memblks

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commit acf5de1b23 upstream.

On physical machine, NUMA node id comes from high bit 44:48 of physical
address. However it is not true on virt machine. With general method, it
comes from ACPI SRAT table.

Here the common function numa_memblks_init() is used to parse NUMA node
information with numa_memblks.

Cc: <stable@vger.kernel.org>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bibo Mao
2025-11-20 14:42:05 +08:00
committed by Greg Kroah-Hartman
parent 7e7b4fff05
commit 95aa37aee4
1 changed files with 18 additions and 42 deletions
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60
arch/loongarch/kernel/numa.c
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@@ -158,35 +158,9 @@ static void __init node_mem_init(unsigned int node)
#ifdef CONFIG_ACPI_NUMA
/*
* add_numamem_region
*
* Add a uasable memory region described by BIOS. The
* routine gets each intersection between BIOS's region
* and node's region, and adds them into node's memblock
* pool.
*
*/
static void __init add_numamem_region(u64 start, u64 end, u32 type)
{
u32 node = pa_to_nid(start);
u64 size = end - start;
static unsigned long num_physpages;
static unsigned long num_physpages;
if (start >= end) {
pr_debug("Invalid region: %016llx-%016llx\n", start, end);
return;
}
num_physpages += (size >> PAGE_SHIFT);
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx Bytes\n",
node, type, start, size);
pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
start >> PAGE_SHIFT, end >> PAGE_SHIFT, num_physpages);
memblock_set_node(start, size, &memblock.memory, node);
}
static void __init init_node_memblock(void)
static void __init info_node_memblock(void)
{
u32 mem_type;
u64 mem_end, mem_start, mem_size;
@@ -206,12 +180,20 @@ static void __init init_node_memblock(void)
case EFI_BOOT_SERVICES_DATA:
case EFI_PERSISTENT_MEMORY:
case EFI_CONVENTIONAL_MEMORY:
add_numamem_region(mem_start, mem_end, mem_type);
num_physpages += (mem_size >> PAGE_SHIFT);
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx Bytes\n",
(u32)pa_to_nid(mem_start), mem_type, mem_start, mem_size);
pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
mem_start >> PAGE_SHIFT, mem_end >> PAGE_SHIFT, num_physpages);
break;
case EFI_PAL_CODE:
case EFI_UNUSABLE_MEMORY:
case EFI_ACPI_RECLAIM_MEMORY:
add_numamem_region(mem_start, mem_end, mem_type);
num_physpages += (mem_size >> PAGE_SHIFT);
pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx Bytes\n",
(u32)pa_to_nid(mem_start), mem_type, mem_start, mem_size);
pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
mem_start >> PAGE_SHIFT, mem_end >> PAGE_SHIFT, num_physpages);
fallthrough;
case EFI_RESERVED_TYPE:
case EFI_RUNTIME_SERVICES_CODE:
@@ -249,22 +231,16 @@ int __init init_numa_memory(void)
for (i = 0; i < NR_CPUS; i++)
set_cpuid_to_node(i, NUMA_NO_NODE);
numa_reset_distance();
nodes_clear(numa_nodes_parsed);
nodes_clear(node_possible_map);
nodes_clear(node_online_map);
WARN_ON(memblock_clear_hotplug(0, PHYS_ADDR_MAX));
/* Parse SRAT and SLIT if provided by firmware. */
ret = acpi_disabled ? fake_numa_init() : acpi_numa_init();
if (!acpi_disabled)
ret = numa_memblks_init(acpi_numa_init, false);
else
ret = numa_memblks_init(fake_numa_init, false);
if (ret < 0)
return ret;
node_possible_map = numa_nodes_parsed;
if (WARN_ON(nodes_empty(node_possible_map)))
return -EINVAL;
init_node_memblock();
info_node_memblock();
if (!memblock_validate_numa_coverage(SZ_1M))
return -EINVAL;