[v9] intel_iommu: Enable first stage translation for passthrough device

[PATCH v9 18/19] intel_iommu: Enable host device when x-flts=on in scalable mode

Zhenzhong Duan posted 19 patches 5 hours ago

Diff against v6 v7 v8
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Maintainers: Yi Liu <yi.l.liu@intel.com>, Eric Auger <eric.auger@redhat.com>, Zhenzhong Duan <zhenzhong.duan@intel.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Jason Wang <jasowang@redhat.com>, "Clément Mathieu--Drif" <clement.mathieu--drif@eviden.com>, Alex Williamson <alex@shazbot.org>, "Cédric Le Goater" <clg@redhat.com>, Fabiano Rosas <farosas@suse.de>, Laurent Vivier <lvivier@redhat.com>

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[PATCH v9 18/19] intel_iommu: Enable host device when x-flts=on in scalable mode

Posted by Zhenzhong Duan 5 hours ago

Now that all infrastructures of supporting passthrough device running
with first stage translation are there, enable it now.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
---
 hw/i386/intel_iommu_accel.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/i386/intel_iommu_accel.c b/hw/i386/intel_iommu_accel.c
index 2996e4b640..89f3d55f6f 100644
--- a/hw/i386/intel_iommu_accel.c
+++ b/hw/i386/intel_iommu_accel.c
@@ -47,9 +47,7 @@ bool vtd_check_hiod_accel(IntelIOMMUState *s, VTDHostIOMMUDevice *vtd_hiod,
         return false;
     }
 
-    error_setg(errp,
-               "host IOMMU is incompatible with guest first stage translation");
-    return false;
+    return true;
 }
 
 VTDHostIOMMUDevice *vtd_find_hiod_iommufd(VTDAddressSpace *as)
-- 
2.47.1