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| author |   Zhenhua Huang <quic_zhenhuah@quicinc.com> | 2025-01-02 15:40:47 +0800 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2025-01-07 16:51:42 +0000 |
| commit | 9ab2601dc4c145279dc518bca00349dc1abe77ed (patch) | |
| tree | 73162f64424d0f4ba28b6d02e125a13f93b13db5 | |
| parent | arm64/mm: Replace open encodings with PXD_TABLE_BIT (diff) | |
| download | wireguard-linux-9ab2601dc4c145279dc518bca00349dc1abe77ed.tar.xz wireguard-linux-9ab2601dc4c145279dc518bca00349dc1abe77ed.zip | |
arm64: mm: Test for pmd_sect() in vmemmap_check_pmd()
Commit 2045a3b8911b ("mm/sparse-vmemmap: generalise vmemmap_populate_hugepages()")
introduces the vmemmap_check_pmd() while does not verify if the entry is a
section mapping, as is already done for Loongarch & X86.
The update includes a check for pmd_sect(). Only if pmd_sect() returns true,
further vmemmap population for the addr is skipped.
Signed-off-by: Zhenhua Huang <quic_zhenhuah@quicinc.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250102074047.674156-1-quic_zhenhuah@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | arch/arm64/mm/mmu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index e2739b69e11b..b4df5bc5b1b8 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1169,7 +1169,8 @@ int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node, unsigned long addr, unsigned long next) { vmemmap_verify((pte_t *)pmdp, node, addr, next); - return 1; + + return pmd_sect(READ_ONCE(*pmdp)); } int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, |