memmap should be the physical address to page struct instead of virtual
address to pfn.
Since we call this only for SPARSEMEM_VMEMMAP, pfn_to_page() is valid at
this point.
Fixes: ba72b4c8cf60 ("mm/sparsemem: support sub-section hotplug")
Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
CC: Dan Williams <dan.j.williams@xxxxxxxxx>
---
mm/sparse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/sparse.c b/mm/sparse.c
index b5da121bdd6e..56816f653588 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -888,7 +888,7 @@ int __meminit sparse_add_section(int nid, unsigned long start_pfn,
/* Align memmap to section boundary in the subsection case */
if (IS_ENABLED(CONFIG_SPARSEMEM_VMEMMAP) &&
section_nr_to_pfn(section_nr) != start_pfn)
- memmap = pfn_to_kaddr(section_nr_to_pfn(section_nr));
+ memmap = pfn_to_page(section_nr_to_pfn(section_nr));
sparse_init_one_section(ms, section_nr, memmap, ms->usage, 0);
return 0;
--
2.17.1
