[Qemu-devel] [PATCH for 2.8 10/11] Revert "intel_iommu: Throw hw_error on notify_started"

[Jason Wang <jasowang@redhat.com>]

From: Peter Xu <peterx@redhat.com>

This reverts commit 3cb3b1549f5401dc3a5e1d073e34063dc274136f. Vhost
device IOTLB API will get notified and send invalidation request to
vhost through this notifier.

Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 hw/i386/intel_iommu.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 298faab..15d1216 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -25,7 +25,6 @@
 #include "exec/address-spaces.h"
 #include "intel_iommu_internal.h"
 #include "hw/pci/pci.h"
-#include "hw/pci/pci_bus.h"
 #include "hw/i386/pc.h"
 #include "hw/boards.h"
 #include "hw/i386/x86-iommu.h"
@@ -2041,16 +2040,6 @@ static IOMMUTLBEntry vtd_iommu_translate(MemoryRegion *iommu, hwaddr addr,
     return ret;
 }
 
-static void vtd_iommu_notify_started(MemoryRegion *iommu)
-{
-    VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu);
-
-    hw_error("Device at bus %s addr %02x.%d requires iommu notifier which "
-             "is currently not supported by intel-iommu emulation",
-             vtd_as->bus->qbus.name, PCI_SLOT(vtd_as->devfn),
-             PCI_FUNC(vtd_as->devfn));
-}
-
 static const VMStateDescription vtd_vmstate = {
     .name = "iommu-intel",
     .unmigratable = 1,
@@ -2418,7 +2407,6 @@ static void vtd_init(IntelIOMMUState *s)
     memset(s->womask, 0, DMAR_REG_SIZE);
 
     s->iommu_ops.translate = vtd_iommu_translate;
-    s->iommu_ops.notify_started = vtd_iommu_notify_started;
     s->root = 0;
     s->root_extended = false;
     s->dmar_enabled = false;
-- 
2.7.4