From: Naveen N. Rao Date: Mon, 27 Mar 2017 19:37:41 +0000 (+0530) Subject: powerpc/bpf: Use memset32() to pre-fill traps in BPF page(s) X-Git-Tag: v4.14-rc1~119^2~187 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=6acdc9a6bad9f23771d24baca763141a24ead6cb;p=linux.git powerpc/bpf: Use memset32() to pre-fill traps in BPF page(s) Use the newly introduced memset32() to pre-fill BPF page(s) with trap instructions. Signed-off-by: Naveen N. Rao Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index 861c5af1c9c4..6ba5d253e857 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -25,11 +25,7 @@ int bpf_jit_enable __read_mostly; static void bpf_jit_fill_ill_insns(void *area, unsigned int size) { - int *p = area; - - /* Fill whole space with trap instructions */ - while (p < (int *)((char *)area + size)) - *p++ = BREAKPOINT_INSTRUCTION; + memset32(area, BREAKPOINT_INSTRUCTION, size/4); } static inline void bpf_flush_icache(void *start, void *end)