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riscv: mm: WARN_ON() for bad addresses in vmemmap_populate() 

Similarly to the same check in arch/arm64/mm/mmu.c, in
vmemmap_populate(), add a warning for start and end being outside of the
range of vmemmap.

Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn>
Link: https://patch.msgid.link/20260309-riscv-sparsemem-vmemmap-limits-v1-1-f40efe18e3cd@iscas.ac.cn
Signed-off-by: Paul Walmsley <pjw@kernel.org>
master
Vivian Wang 2026-04-03 19:28:47 -06:00 committed by Paul Walmsley
parent dd59844933
commit b0217d97ee
1 changed files with 2 additions and 0 deletions
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2
arch/riscv/mm/init.c
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@ -1448,6 +1448,8 @@ int __meminit vmemmap_check_pmd(pmd_t *pmdp, int node,
int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
struct vmem_altmap *altmap)
{
WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END));
/*
* Note that SPARSEMEM_VMEMMAP is only selected for rv64 and that we
* can't use hugepage mappings for 2-level page table because in case of