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authorDenis Kirjanov <kda@linux-powerpc.org>2014-12-01 09:57:02 (GMT)
committerDavid S. Miller <davem@davemloft.net>2014-12-09 01:22:30 (GMT)
commit2e46477a12f6fd273e31a220b155d66e8352198c (patch)
treea106c2e098157aa845fdc5d86ff7aae7fed5e7db /arch/mips/net
parentf2a01517f2a1040a0b156f171a7cefd748f2fd03 (diff)
downloadlinux-2e46477a12f6fd273e31a220b155d66e8352198c.tar.xz
mips: bpf: Fix broken BPF_MOD
Remove optimize_div() from BPF_MOD | BPF_K case since we don't know the dividend and fix the emit_mod() by reading the mod operation result from HI register Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> Reviewed-by: Markos Chandras <markos.chandras@imgtec.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/mips/net')
-rw-r--r--arch/mips/net/bpf_jit.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/net/bpf_jit.c b/arch/mips/net/bpf_jit.c
index 9b55143..9fd6834 100644
--- a/arch/mips/net/bpf_jit.c
+++ b/arch/mips/net/bpf_jit.c
@@ -426,7 +426,7 @@ static inline void emit_mod(unsigned int dst, unsigned int src,
u32 *p = &ctx->target[ctx->idx];
uasm_i_divu(&p, dst, src);
p = &ctx->target[ctx->idx + 1];
- uasm_i_mflo(&p, dst);
+ uasm_i_mfhi(&p, dst);
}
ctx->idx += 2; /* 2 insts */
}
@@ -971,7 +971,7 @@ load_ind:
break;
case BPF_ALU | BPF_MOD | BPF_K:
/* A %= k */
- if (k == 1 || optimize_div(&k)) {
+ if (k == 1) {
ctx->flags |= SEEN_A;
emit_jit_reg_move(r_A, r_zero, ctx);
} else {