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powerpc/bpf: Use memset32() to pre-fill traps in BPF page(s)

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Use the newly introduced memset32() to pre-fill BPF page(s) with trap
instructions.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Naveen N. Rao 2017-03-28 01:07:41 +05:30 committed by Michael Ellerman
parent 694fc88ce2
commit 6acdc9a6ba
1 changed files with 1 additions and 5 deletions
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6
arch/powerpc/net/bpf_jit_comp64.c
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@ -25,11 +25,7 @@ int bpf_jit_enable __read_mostly;
static void bpf_jit_fill_ill_insns(void *area, unsigned int size) static void bpf_jit_fill_ill_insns(void *area, unsigned int size)
{ {
int *p = area; memset32(area, BREAKPOINT_INSTRUCTION, size/4);
/* Fill whole space with trap instructions */
while (p < (int *)((char *)area + size))
*p++ = BREAKPOINT_INSTRUCTION;
} }
static inline void bpf_flush_icache(void *start, void *end) static inline void bpf_flush_icache(void *start, void *end)