powerpc/vdso: Rename syscall_map_32/64 to simplify vdso_setup_syscall_map()

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Today vdso_data structure has:
- syscall_map_32[] and syscall_map_64[] on PPC64
- syscall_map_32[] on PPC32

On PPC32, syscall_map_32[] is populated using sys_call_table[].

On PPC64, syscall_map_64[] is populated using sys_call_table[]
and syscal_map_32[] is populated using compat_sys_call_table[].

To simplify vdso_setup_syscall_map(),
- On PPC32 rename syscall_map_32[] into syscall_map[],
- On PPC64 rename syscall_map_64[] into syscall_map[],
- On PPC64 rename syscall_map_32[] into compat_syscall_map[].

That way, syscall_map[] gets populated using sys_call_table[] and
compat_syscall_map[] gets population using compat_sys_call_table[].

Also define an empty compat_syscall_map[] on PPC32 to avoid ifdefs.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/472734be0d9991eee320a06824219a5b2663736b.1601197618.git.christophe.leroy@csgroup.eu

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This commit is contained in:

Christophe Leroy 2020-09-27 09:16:20 +00:00 • committed by Michael Ellerman

parent bc9d5bfc4d

commit 1bb30b7a45

3 changed files with 10 additions and 15 deletions

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7

arch/powerpc/include/asm/vdso_datapage.h

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arch/powerpc/kernel/asm-offsets.c

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12

arch/powerpc/kernel/vdso.c

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