Change the confuse "VFIO IOMMU check failed" error message by
the explicit "VFIO IOMMU Type1 is not supported" once.

Example on POWER:

 $ qemu-system-ppc64 -drive 
if=none,id=nvme0,file=nvme://0001:01:00.0/1,format=raw
 qemu-system-ppc64: -drive 
if=none,id=nvme0,file=nvme://0001:01:00.0/1,format=raw: VFIO IOMMU Type1 is not 
supported

Suggested-by: Alex Williamson <alex.william...@redhat.com>
Reviewed-by: Fam Zheng <f...@euphon.net>
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com>
---
 util/vfio-helpers.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index c469beb0616..14a549510fe 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -300,7 +300,7 @@ static int qemu_vfio_init_pci(QEMUVFIOState *s, const char 
*device,
     }
 
     if (!ioctl(s->container, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
-        error_setg_errno(errp, errno, "VFIO IOMMU check failed");
+        error_setg_errno(errp, errno, "VFIO IOMMU Type1 is not supported");
         ret = -EINVAL;
         goto fail_container;
     }
-- 
2.26.2


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