From: Eugenio Pérez <eperezma@redhat.com>
Date: Thu, 14 Oct 2021 14:12:34 +0000 (+0200)
Subject: vdpa: Skip protected ram IOMMU mappings
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c64038c93e171697058d96871f87a4438b613662;p=qemu.git

vdpa: Skip protected ram IOMMU mappings

Following the logic of commit 56918a126ae ("memory: Add RAM_PROTECTED
flag to skip IOMMU mappings") with VFIO, skip memory sections
inaccessible via normal mechanisms, including DMA.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20211014141236.923287-2-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
---

diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 47d7a5a23d..ea1aa71ad8 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -28,6 +28,7 @@ static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section)
 {
     return (!memory_region_is_ram(section->mr) &&
             !memory_region_is_iommu(section->mr)) ||
+            memory_region_is_protected(section->mr) ||
            /* vhost-vDPA doesn't allow MMIO to be mapped  */
             memory_region_is_ram_device(section->mr) ||
            /*