powerpc32/bpf: Fix codegen for bpf-to-bpf calls

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Pad instructions emitted for BPF_CALL so that the number of instructions
generated does not change for different function addresses. This is
especially important for calls to other bpf functions, whose address
will only be known during extra pass.

Fixes: 51c66ad849 ("powerpc/bpf: Implement extended BPF on PPC32")
Cc: stable@vger.kernel.org # v5.13+
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/52d8fe51f7620a6f27f377791564d79d75463576.1641468127.git.naveen.n.rao@linux.vnet.ibm.com

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Naveen N. Rao 2022-01-06 17:15:06 +05:30 • committed by Michael Ellerman

parent b992f01e66

commit fab07611fb

1 changed files with 3 additions and 0 deletions

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arch/powerpc/net/bpf_jit_comp32.c

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