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authorBarry Song <song.bao.hua@hisilicon.com>2020-06-18 00:58:28 +0300
committerWill Deacon <will@kernel.org>2020-06-18 12:39:15 +0300
commit618e07865b7453d02410c1f3407c2d78a670eabb (patch)
tree1a1d3df14ba429c319421fa4da4b613f1e086f88 /arch/arm64
parentb9249cba25a5dce5de87e5404503a5e11832c2dd (diff)
downloadlinux-618e07865b7453d02410c1f3407c2d78a670eabb.tar.xz
arm64: mm: reserve hugetlb CMA after numa_init
hugetlb_cma_reserve() is called at the wrong place. numa_init has not been done yet. so all reserved memory will be located at node0. Fixes: cf11e85fc08c ("mm: hugetlb: optionally allocate gigantic hugepages using cma") Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20200617215828.25296-1-song.bao.hua@hisilicon.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/mm/init.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index e631e6425165..1e93cfc7c47a 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -404,11 +404,6 @@ void __init arm64_memblock_init(void)
high_memory = __va(memblock_end_of_DRAM() - 1) + 1;
dma_contiguous_reserve(arm64_dma32_phys_limit);
-
-#ifdef CONFIG_ARM64_4K_PAGES
- hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
-#endif
-
}
void __init bootmem_init(void)
@@ -424,6 +419,16 @@ void __init bootmem_init(void)
min_low_pfn = min;
arm64_numa_init();
+
+ /*
+ * must be done after arm64_numa_init() which calls numa_init() to
+ * initialize node_online_map that gets used in hugetlb_cma_reserve()
+ * while allocating required CMA size across online nodes.
+ */
+#ifdef CONFIG_ARM64_4K_PAGES
+ hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
+#endif
+
/*
* Sparsemem tries to allocate bootmem in memory_present(), so must be
* done after the fixed reservations.