LoongArch: numa: Fix high_memory calculation

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commit 1943feecf8 upstream.

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: d4b6f1562a ("LoongArch: Add Non-Uniform Memory Access (NUMA) support")
Signed-off-by: Chong Qiao <qiaochong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Huacai Chen 2023-09-27 16:19:13 +08:00 • committed by Greg Kroah-Hartman

parent 7bc8585aa0

commit 490f3b805e

1 changed files with 1 additions and 1 deletions

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arch/loongarch/kernel/numa.c

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