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From: Jakub Kicinski <jakub.kicinski@netronome.com>
To: netdev@vger.kernel.org
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Subject: [PATCH net-next] nfp: bpf: zero extend 4 byte context loads
Date: Wed, 28 Sep 2016 23:47:37 +0100	[thread overview]
Message-ID: <1475102857-23672-1-git-send-email-jakub.kicinski@netronome.com> (raw)

Set upper 32 bits of destination register to zeros after
load from the context structure.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c b/drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c
index 3de819acd68c..f8df5300f49c 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_bpf_jit.c
@@ -1134,6 +1134,8 @@ static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
 	else
 		return -ENOTSUPP;
 
+	wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0);
+
 	return 0;
 }
 
-- 
1.9.1

             reply	other threads:[~2016-09-28 22:47 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-28 22:47 Jakub Kicinski [this message]
2016-09-30  6:10 ` [PATCH net-next] nfp: bpf: zero extend 4 byte context loads David Miller

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