55 lines
2.0 KiB
Diff
55 lines
2.0 KiB
Diff
From 8d45902b4884315ec090e607e9f03606b21001cf Mon Sep 17 00:00:00 2001
|
|
From: Zhenzhong Duan <zhenzhong.duan@intel.com>
|
|
Date: Fri, 24 Jun 2022 17:37:40 +0800
|
|
Subject: [PATCH 05/17] virtio-iommu: Fix migration regression
|
|
|
|
RH-Author: Eric Auger <eric.auger@redhat.com>
|
|
RH-MergeRequest: 105: virtio-iommu: Fix bypass mode for assigned devices
|
|
RH-Commit: [5/5] 9652c4aaaf88e24083fab1fbc3d1423260c93ca6 (eauger1/centos-qemu-kvm)
|
|
RH-Bugzilla: 2100106
|
|
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
RH-Acked-by: Peter Xu <peterx@redhat.com>
|
|
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
|
|
|
|
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2100106
|
|
|
|
We also need to switch to the right address space on dest side
|
|
after loading the device status. DMA to wrong address space is
|
|
destructive.
|
|
|
|
Fixes: 3facd774962fd ("virtio-iommu: Add bypass mode support to assigned device")
|
|
Suggested-by: Eric Auger <eric.auger@redhat.com>
|
|
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
|
|
Message-Id: <20220624093740.3525267-1-zhenzhong.duan@intel.com>
|
|
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
|
|
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
|
|
Reviewed-by: Eric Auger <eric.auger@redhat.com>
|
|
(cherry picked from commit d355566bd958e24e7e384da6ea89a9fc88d7bfed)
|
|
Signed-off-by: Eric Auger <eric.auger@redhat.com>
|
|
---
|
|
hw/virtio/virtio-iommu.c | 8 ++++++++
|
|
1 file changed, 8 insertions(+)
|
|
|
|
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
|
|
index 44a041dec9..2012835554 100644
|
|
--- a/hw/virtio/virtio-iommu.c
|
|
+++ b/hw/virtio/virtio-iommu.c
|
|
@@ -1324,6 +1324,14 @@ static int iommu_post_load(void *opaque, int version_id)
|
|
VirtIOIOMMU *s = opaque;
|
|
|
|
g_tree_foreach(s->domains, reconstruct_endpoints, s);
|
|
+
|
|
+ /*
|
|
+ * Memory regions are dynamically turned on/off depending on
|
|
+ * 'config.bypass' and attached domain type if there is. After
|
|
+ * migration, we need to make sure the memory regions are
|
|
+ * still correct.
|
|
+ */
|
|
+ virtio_iommu_switch_address_space_all(s);
|
|
return 0;
|
|
}
|
|
|
|
--
|
|
2.31.1
|
|
|