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powerpc/64s: Only set HAVE_ARCH_UNMAPPED_AREA when CONFIG_PPC_64S_HASH_MMU is set

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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.

Fixes: ab57bd7570d4 ("powerpc/mm: Move get_unmapped_area functions to slice.c")
Reported-by: Laurent Dufour <ldufour@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Laurent Dufour <ldufour@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e438c6cc09f94085e56733ed2d6e84333c35292a.1653370913.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2022-05-24 07:42:05 +02:00 committed by Michael Ellerman
parent 14554d92c1
commit c85ab4fe33
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/include/asm/book3s/64/slice.h
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@ -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)