powerpc/bpf/32: No need to zeroise r4 when not doing tail call

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r4 is cleared at function entry and used as tail call count.

But when the function does not perform tail call, r4 is
ignored, so no need to clear it.

Replace it by a NOP in that case.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/9c5440b2b6d90a78600257433ac499b5c5101fbb.1675245773.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2023-02-01 11:04:24 +01:00 • committed by Michael Ellerman

parent d9ab6da64f

commit 6376ed8fec

1 changed files with 4 additions and 1 deletions

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arch/powerpc/net/bpf_jit_comp32.c

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