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authorDaniel Walker <dwalker@fifo99.com>2013-04-23 20:50:33 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-06-20 02:55:11 -0400
commitd5d8ec895ca599fbde43efe3a2f9714315e3d298 (patch)
tree7cacca3d77474550d6fe8a2d1beb753578f24a5e
parent3139b0a797d6826519ed98a13623a92f12269613 (diff)
powerpc/mm: Make mmap_64.c compile on 32bit powerpc
There appears to be no good reason to keep this as 64bit only. It works on 32bit also, and has checks so that it can work correctly with 32bit binaries on 64bit hardware which is why I think this works. I tested this on qemu using the virtex-ml507 machine type. Before, /bin2 # ./test & cat /proc/${!}/maps 00100000-00103000 r-xp 00000000 00:00 0 [vdso] 10000000-10007000 r-xp 00000000 00:01 454 /bin2/test 10017000-10018000 rw-p 00007000 00:01 454 /bin2/test 48000000-48020000 r-xp 00000000 00:01 224 /lib/ld-2.11.3.so 48021000-48023000 rw-p 00021000 00:01 224 /lib/ld-2.11.3.so bfd03000-bfd24000 rw-p 00000000 00:00 0 [stack] /bin2 # ./test & cat /proc/${!}/maps 00100000-00103000 r-xp 00000000 00:00 0 [vdso] 0fe6e000-0ffd8000 r-xp 00000000 00:01 214 /lib/libc-2.11.3.so 0ffd8000-0ffe8000 ---p 0016a000 00:01 214 /lib/libc-2.11.3.so 0ffe8000-0ffed000 rw-p 0016a000 00:01 214 /lib/libc-2.11.3.so 0ffed000-0fff0000 rw-p 00000000 00:00 0 10000000-10007000 r-xp 00000000 00:01 454 /bin2/test 10017000-10018000 rw-p 00007000 00:01 454 /bin2/test 48000000-48020000 r-xp 00000000 00:01 224 /lib/ld-2.11.3.so 48020000-48021000 rw-p 00000000 00:00 0 48021000-48023000 rw-p 00021000 00:01 224 /lib/ld-2.11.3.so bf98a000-bf9ab000 rw-p 00000000 00:00 0 [stack] /bin2 # ./test & cat /proc/${!}/maps 00100000-00103000 r-xp 00000000 00:00 0 [vdso] 0fe6e000-0ffd8000 r-xp 00000000 00:01 214 /lib/libc-2.11.3.so 0ffd8000-0ffe8000 ---p 0016a000 00:01 214 /lib/libc-2.11.3.so 0ffe8000-0ffed000 rw-p 0016a000 00:01 214 /lib/libc-2.11.3.so 0ffed000-0fff0000 rw-p 00000000 00:00 0 10000000-10007000 r-xp 00000000 00:01 454 /bin2/test 10017000-10018000 rw-p 00007000 00:01 454 /bin2/test 48000000-48020000 r-xp 00000000 00:01 224 /lib/ld-2.11.3.so 48020000-48021000 rw-p 00000000 00:00 0 48021000-48023000 rw-p 00021000 00:01 224 /lib/ld-2.11.3.so bfa54000-bfa75000 rw-p 00000000 00:00 0 [stack] After, bash-4.1# ./test & cat /proc/${!}/maps [7] 803 00100000-00103000 r-xp 00000000 00:00 0 [vdso] 10000000-10007000 r-xp 00000000 00:01 454 /bin2/test 10017000-10018000 rw-p 00007000 00:01 454 /bin2/test b7eb0000-b7ed0000 r-xp 00000000 00:01 224 /lib/ld-2.11.3.so b7ed1000-b7ed3000 rw-p 00021000 00:01 224 /lib/ld-2.11.3.so bfbc0000-bfbe1000 rw-p 00000000 00:00 0 [stack] bash-4.1# ./test & cat /proc/${!}/maps [8] 805 00100000-00103000 r-xp 00000000 00:00 0 [vdso] 10000000-10007000 r-xp 00000000 00:01 454 /bin2/test 10017000-10018000 rw-p 00007000 00:01 454 /bin2/test b7b03000-b7b23000 r-xp 00000000 00:01 224 /lib/ld-2.11.3.so b7b24000-b7b26000 rw-p 00021000 00:01 224 /lib/ld-2.11.3.so bfc27000-bfc48000 rw-p 00000000 00:00 0 [stack] bash-4.1# ./test & cat /proc/${!}/maps [9] 807 00100000-00103000 r-xp 00000000 00:00 0 [vdso] 10000000-10007000 r-xp 00000000 00:01 454 /bin2/test 10017000-10018000 rw-p 00007000 00:01 454 /bin2/test b7f37000-b7f57000 r-xp 00000000 00:01 224 /lib/ld-2.11.3.so b7f58000-b7f5a000 rw-p 00021000 00:01 224 /lib/ld-2.11.3.so bff96000-bffb7000 rw-p 00000000 00:00 0 [stack] Signed-off-by: Daniel Walker <dwalker@fifo90.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/include/asm/processor.h2
-rw-r--r--arch/powerpc/mm/Makefile5
-rw-r--r--arch/powerpc/mm/mmap.c (renamed from arch/powerpc/mm/mmap_64.c)0
3 files changed, 2 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 14a658363698..7135a257f7cb 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -404,9 +404,7 @@ static inline void prefetchw(const void *x)
404 404
405#define spin_lock_prefetch(x) prefetchw(x) 405#define spin_lock_prefetch(x) prefetchw(x)
406 406
407#ifdef CONFIG_PPC64
408#define HAVE_ARCH_PICK_MMAP_LAYOUT 407#define HAVE_ARCH_PICK_MMAP_LAYOUT
409#endif
410 408
411#ifdef CONFIG_PPC64 409#ifdef CONFIG_PPC64
412static inline unsigned long get_clean_sp(unsigned long sp, int is_32) 410static inline unsigned long get_clean_sp(unsigned long sp, int is_32)
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index cf16b5733eaa..26f29a772414 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -6,17 +6,16 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
6 6
7ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) 7ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
8 8
9obj-y := fault.o mem.o pgtable.o gup.o \ 9obj-y := fault.o mem.o pgtable.o gup.o mmap.o \
10 init_$(CONFIG_WORD_SIZE).o \ 10 init_$(CONFIG_WORD_SIZE).o \
11 pgtable_$(CONFIG_WORD_SIZE).o 11 pgtable_$(CONFIG_WORD_SIZE).o
12obj-$(CONFIG_PPC_MMU_NOHASH) += mmu_context_nohash.o tlb_nohash.o \ 12obj-$(CONFIG_PPC_MMU_NOHASH) += mmu_context_nohash.o tlb_nohash.o \
13 tlb_nohash_low.o 13 tlb_nohash_low.o
14obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(CONFIG_WORD_SIZE)e.o 14obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(CONFIG_WORD_SIZE)e.o
15obj-$(CONFIG_PPC64) += mmap_64.o
16hash64-$(CONFIG_PPC_NATIVE) := hash_native_64.o 15hash64-$(CONFIG_PPC_NATIVE) := hash_native_64.o
17obj-$(CONFIG_PPC_STD_MMU_64) += hash_utils_64.o \ 16obj-$(CONFIG_PPC_STD_MMU_64) += hash_utils_64.o \
18 slb_low.o slb.o stab.o \ 17 slb_low.o slb.o stab.o \
19 mmap_64.o $(hash64-y) 18 $(hash64-y)
20obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o 19obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o
21obj-$(CONFIG_PPC_STD_MMU) += hash_low_$(CONFIG_WORD_SIZE).o \ 20obj-$(CONFIG_PPC_STD_MMU) += hash_low_$(CONFIG_WORD_SIZE).o \
22 tlb_hash$(CONFIG_WORD_SIZE).o \ 21 tlb_hash$(CONFIG_WORD_SIZE).o \
diff --git a/arch/powerpc/mm/mmap_64.c b/arch/powerpc/mm/mmap.c
index 67a42ed0d2fc..67a42ed0d2fc 100644
--- a/arch/powerpc/mm/mmap_64.c
+++ b/arch/powerpc/mm/mmap.c