The default generic barriers are not correct for ARM64. This results
in data corruption. The correct macros are based on the ARM Compiler
Toolchain Assembler Reference documenation.
Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
---
include/infiniband/arch.h | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/include/infiniband/arch.h b/include/infiniband/arch.h
index bc1738a..c31dd0a 100644
--- a/include/infiniband/arch.h
+++ b/include/infiniband/arch.h
@@ -122,6 +122,14 @@ static inline uint64_t ntohll(uint64_t x) { return x; }
#define wmb() mb() /* for s390x */
#define wc_wmb() wmb() /* for s390x */
+#elif defined(__aarch64__)
+
+/* Perhaps dmb would be sufficient? Let us be conservative for now. */
+#define mb() { asm volatile("dsb sy" ::: "memory"); }
+#define rmb() { asm volatile("dsb ld" ::: "memory"); }
+#define wmb() { asm volatile("dsb st" ::: "memory"); }
+#define wc_wmb() wmb()
+
#else
#warning No architecture specific defines found. Using generic implementation.
--
1.7.1
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