diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2023-09-27 16:19:13 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-09-27 16:19:13 +0800 |
| commit | 1943feecf80e73ecc03ce40271f29c6cea142bac (patch) | |
| tree | 912d84d3a1cc0c6bababc6dab05f1ea0a32a2207 /arch/loongarch | |
| parent | 6465e260f48790807eef06b583b38ca9789b6072 (diff) | |
LoongArch: numa: Fix high_memory calculation
For 64bit kernel without HIGHMEM, high_memory is the virtual address of
the highest physical address in the system. But __va(get_num_physpages()
<< PAGE_SHIFT) is not what we want for high_memory because there may be
holes in the physical address space. On the other hand, max_low_pfn is
calculated from memblock_end_of_DRAM(), which is exactly corresponding
to the highest physical address, so use it for high_memory calculation.
Cc: <stable@vger.kernel.org>
Fixes: d4b6f1562a3c3284adce ("LoongArch: Add Non-Uniform Memory Access (NUMA) support")
Signed-off-by: Chong Qiao <qiaochong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/kernel/numa.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/loongarch/kernel/numa.c b/arch/loongarch/kernel/numa.c index c7d33c489e04..6e65ff12d5c7 100644 --- a/arch/loongarch/kernel/numa.c +++ b/arch/loongarch/kernel/numa.c @@ -436,7 +436,7 @@ void __init paging_init(void) void __init mem_init(void) { - high_memory = (void *) __va(get_num_physpages() << PAGE_SHIFT); + high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT); memblock_free_all(); } |