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authorYuval Shaia <yuval.shaia@oracle.com>2019-08-18 16:21:06 +0300
committerMarcel Apfelbaum <marcel.apfelbaum@gmail.com>2019-11-06 12:48:41 +0200
commitee108585bb1924a8df88188925d0d01b90b4b9e8 (patch)
tree90b9fe6a983d53f96ca7dba5624ce067b43ddeaa /configure
parent412fbef3d076c43e56451bacb28c4544858c66a3 (diff)
configure: Check if we can use ibv_reg_mr_iova
The function reg_mr_iova is an enhanced version of ibv_reg_mr function that can help to easly register and use guest's MRs. Add check in 'configure' phase to detect if we have libibverbs with this support. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Message-Id: <20190818132107.18181-2-yuval.shaia@oracle.com> Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure28
1 files changed, 28 insertions, 0 deletions
diff --git a/configure b/configure
index 72553f98ea..efe165edf9 100755
--- a/configure
+++ b/configure
@@ -3217,6 +3217,34 @@ else
pvrdma="no"
fi
+# Let's see if enhanced reg_mr is supported
+if test "$pvrdma" = "yes" ; then
+
+cat > $TMPC <<EOF &&
+#include <infiniband/verbs.h>
+
+int
+main(void)
+{
+ struct ibv_mr *mr;
+ struct ibv_pd *pd = NULL;
+ size_t length = 10;
+ uint64_t iova = 0;
+ int access = 0;
+ void *addr = NULL;
+
+ mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
+
+ ibv_dereg_mr(mr);
+
+ return 0;
+}
+EOF
+ if ! compile_prog "" "-libverbs"; then
+ QEMU_CFLAGS="$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR"
+ fi
+fi
+
##########################################
# VNC SASL detection
if test "$vnc" = "yes" && test "$vnc_sasl" != "no" ; then