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Tsirkin" , Jason Wang , Juan Quintela , Eric Auger , Avi Kivity , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Eugenio Pérez --- hw/virtio/vhost.c | 2 +- include/exec/memory.h | 2 ++ softmmu/memory.c | 10 ++++++++-- 3 files changed, 11 insertions(+), 3 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 1a1384e7a6..e74ad9e09b 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -729,7 +729,7 @@ static void vhost_iommu_region_add(MemoryListener *listener, iommu_idx = memory_region_iommu_attrs_to_index(iommu_mr, MEMTXATTRS_UNSPECIFIED); iommu_notifier_init(&iommu->n, vhost_iommu_unmap_notify, - IOMMU_NOTIFIER_UNMAP, + IOMMU_NOTIFIER_UNMAP | IOMMU_NOTIFIER_IOTLB, section->offset_within_region, int128_get64(end), iommu_idx); diff --git a/include/exec/memory.h b/include/exec/memory.h index 307e527835..4d94c1e984 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -87,6 +87,8 @@ typedef enum { IOMMU_NOTIFIER_UNMAP = 0x1, /* Notify entry changes (newly created entries) */ IOMMU_NOTIFIER_MAP = 0x2, + /* Notify changes on IOTLB entries */ + IOMMU_NOTIFIER_IOTLB = 0x04, } IOMMUNotifierFlag; #define IOMMU_NOTIFIER_ALL (IOMMU_NOTIFIER_MAP | IOMMU_NOTIFIER_UNMAP) diff --git a/softmmu/memory.c b/softmmu/memory.c index af25987518..e2c5f6d0e7 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -1895,6 +1895,7 @@ void memory_region_notify_one(IOMMUNotifier *notifier, { IOMMUNotifierFlag request_flags; hwaddr entry_end = entry->iova + entry->addr_mask; + IOMMUTLBEntry tmp = *entry; /* * Skip the notification if the notification does not overlap @@ -1904,7 +1905,12 @@ void memory_region_notify_one(IOMMUNotifier *notifier, return; } - assert(entry->iova >= notifier->start && entry_end <= notifier->end); + if (notifier->notifier_flags & IOMMU_NOTIFIER_IOTLB) { + tmp.iova = MAX(tmp.iova, notifier->start); + tmp.addr_mask = MIN(entry_end, notifier->end) - tmp.iova; + } else { + assert(entry->iova >= notifier->start && entry_end <= notifier->end); + } if (entry->perm & IOMMU_RW) { request_flags = IOMMU_NOTIFIER_MAP; @@ -1913,7 +1919,7 @@ void memory_region_notify_one(IOMMUNotifier *notifier, } if (notifier->notifier_flags & request_flags) { - notifier->notify(notifier, entry); + notifier->notify(notifier, &tmp); } } -- 2.18.1