arch/powerpc/include/asm/book3s/64/slice.h | 2 ++ 1 file changed, 2 insertions(+)
When CONFIG_PPC_64S_HASH_MMU is not set, slice.c is not built and
arch_get_unmapped_area() and arch_get_unmapped_area_topdown() are
not provided because RADIX uses the generic ones.
Therefore, neither set HAVE_ARCH_UNMAPPED_AREA nor
HAVE_ARCH_UNMAPPED_AREA_TOPDOWN.
Reported-by: Laurent Dufour <ldufour@linux.ibm.com>
Fixes: ab57bd7570d4 ("powerpc/mm: Move get_unmapped_area functions to slice.c")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
arch/powerpc/include/asm/book3s/64/slice.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/include/asm/book3s/64/slice.h b/arch/powerpc/include/asm/book3s/64/slice.h
index b8eb4ad271b9..5fbe18544cbd 100644
--- a/arch/powerpc/include/asm/book3s/64/slice.h
+++ b/arch/powerpc/include/asm/book3s/64/slice.h
@@ -4,11 +4,13 @@
#ifndef __ASSEMBLY__
+#ifdef CONFIG_PPC_64S_HASH_MMU
#ifdef CONFIG_HUGETLB_PAGE
#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
#endif
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
+#endif
#define SLICE_LOW_SHIFT 28
#define SLICE_LOW_TOP (0x100000000ul)
--
2.35.3
On Tue, 24 May 2022 07:42:05 +0200, Christophe Leroy wrote: > When CONFIG_PPC_64S_HASH_MMU is not set, slice.c is not built and > arch_get_unmapped_area() and arch_get_unmapped_area_topdown() are > not provided because RADIX uses the generic ones. > > Therefore, neither set HAVE_ARCH_UNMAPPED_AREA nor > HAVE_ARCH_UNMAPPED_AREA_TOPDOWN. > > [...] Applied to powerpc/next. [1/1] powerpc/64s: Only set HAVE_ARCH_UNMAPPED_AREA when CONFIG_PPC_64S_HASH_MMU is set https://git.kernel.org/powerpc/c/c85ab4fe33065ca1fdcac26f0c00c837fe727ba7 cheers
On 24/05/2022, 07:42:05, Christophe Leroy wrote: > When CONFIG_PPC_64S_HASH_MMU is not set, slice.c is not built and > arch_get_unmapped_area() and arch_get_unmapped_area_topdown() are > not provided because RADIX uses the generic ones. > > Therefore, neither set HAVE_ARCH_UNMAPPED_AREA nor > HAVE_ARCH_UNMAPPED_AREA_TOPDOWN. > > Reported-by: Laurent Dufour <ldufour@linux.ibm.com> > Fixes: ab57bd7570d4 ("powerpc/mm: Move get_unmapped_area functions to slice.c") > Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> > FWIW, Tested-by: Laurent Dufour <ldufour@linux.ibm.com> --- > arch/powerpc/include/asm/book3s/64/slice.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/powerpc/include/asm/book3s/64/slice.h b/arch/powerpc/include/asm/book3s/64/slice.h > index b8eb4ad271b9..5fbe18544cbd 100644 > --- a/arch/powerpc/include/asm/book3s/64/slice.h > +++ b/arch/powerpc/include/asm/book3s/64/slice.h > @@ -4,11 +4,13 @@ > > #ifndef __ASSEMBLY__ > > +#ifdef CONFIG_PPC_64S_HASH_MMU > #ifdef CONFIG_HUGETLB_PAGE > #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA > #endif > #define HAVE_ARCH_UNMAPPED_AREA > #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN > +#endif > > #define SLICE_LOW_SHIFT 28 > #define SLICE_LOW_TOP (0x100000000ul)
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