2018-07-24 13:36:48

by Brian Brooks

Subject: [PATCH bpf-next] samples/bpf: xdpsock: order memory on AArch64

Signed-off-by: Brian Brooks <[email protected]>
---
samples/bpf/xdpsock_user.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index 5904b1543831..1e82f7c617c3 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -145,8 +145,13 @@ static void dump_stats(void);
} while (0)

#define barrier() __asm__ __volatile__("": : :"memory")
+#ifdef __aarch64__
+#define u_smp_rmb() __asm__ __volatile__("dmb ishld": : :"memory")
+#define u_smp_wmb() __asm__ __volatile__("dmb ishst": : :"memory")
+#else
#define u_smp_rmb() barrier()
#define u_smp_wmb() barrier()
+#endif
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)

--
2.18.0

2018-07-25 05:53:59

by Daniel Borkmann

Subject: Re: [PATCH bpf-next] samples/bpf: xdpsock: order memory on AArch64

On 07/24/2018 03:33 PM, Brian Brooks wrote:
> Signed-off-by: Brian Brooks <[email protected]>

Please respin with proper commit message instead of empty one.

Thanks,
Daniel