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X-Received-From: 2a00:1450:4864:20::342 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yuval.shaia@oracle.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Yuval Shaia 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 Reviewed-by: Marcel Apfelbaum Message-Id: <20190818132107.18181-2-yuval.shaia@oracle.com> Signed-off-by: Marcel Apfelbaum --- configure | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/configure b/configure index 72553f98ea..efe165edf9 100755 --- a/configure +++ b/configure @@ -3217,6 +3217,34 @@ else pvrdma=3D"no" fi =20 +# Let's see if enhanced reg_mr is supported +if test "$pvrdma" =3D "yes" ; then + +cat > $TMPC < + +int +main(void) +{ + struct ibv_mr *mr; + struct ibv_pd *pd =3D NULL; + size_t length =3D 10; + uint64_t iova =3D 0; + int access =3D 0; + void *addr =3D NULL; + + mr =3D ibv_reg_mr_iova(pd, addr, length, iova, access); + + ibv_dereg_mr(mr); + + return 0; +} +EOF + if ! compile_prog "" "-libverbs"; then + QEMU_CFLAGS=3D"$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR" + fi +fi + ########################################## # VNC SASL detection if test "$vnc" =3D "yes" && test "$vnc_sasl" !=3D "no" ; then --=20 2.17.2