powerpc/syscall: Do not check unsupported scv vector on PPC32

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Only book3s/64 has scv. No need to check the 0x7ff0 trap on 32 or 64e.
For that, add a helper trap_is_unsupported_scv() similar to
trap_is_scv().

And ignore the scv parameter in syscall_exit_prepare (Save 14 cycles
346 => 332 cycles)

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/fb87b205ae8eb8c623f33bb316801acf95a831e6.1612898425.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2021-02-09 19:29:27 +00:00 • committed by Michael Ellerman

parent eb595eca74

commit b966f22790

2 changed files with 10 additions and 4 deletions

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5

arch/powerpc/include/asm/ptrace.h

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9

arch/powerpc/kernel/interrupt.c

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