The patch titled
Subject: mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem-fix
has been added to the -mm mm-unstable branch. Its filename is
mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxx>
Subject: mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem-fix
Date: Tue, 31 Jan 2023 20:41:49 +0200
The generic pfn_valid() does not take into account pfn_offset when it
compares it with max_mapnr.
Link: https://lkml.kernel.org/r/Y9lg7R1Yd931C+y5@xxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxx>
Reported-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Tested-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-generic/memory_model.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/asm-generic/memory_model.h~mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem-fix
+++ a/include/asm-generic/memory_model.h
@@ -26,7 +26,7 @@ static inline int pfn_valid(unsigned lon
extern unsigned long max_mapnr;
unsigned long pfn_offset = ARCH_PFN_OFFSET;
- return pfn >= pfn_offset && pfn < max_mapnr;
+ return pfn >= pfn_offset && (pfn - pfn_offset) < max_mapnr;
}
#define pfn_valid pfn_valid
#endif
_
Patches currently in -mm which might be from rppt@xxxxxxxxxx are
mm-sparse-fix-unused-function-pgdat_to_phys-warning.patch
arm-include-asm-generic-memory_modelh-from-pageh-rather-than-memoryh.patch
m68k-use-asm-generic-memory_modelh-for-both-mmu-and-mmu.patch
mips-drop-definition-of-pfn_valid-for-discontigmem.patch
mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem.patch
mm-arch-add-generic-implementation-of-pfn_valid-for-flatmem-fix.patch
