Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,pci,vhost,virtio: fixes

Lots of fixes all over the place.
virtio-mem and virtio-iommu patches are kind of fixes but
it seems better to just make them behave sanely than
try to educate users about the limitations ...

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed 04 Nov 2020 18:40:03 GMT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (31 commits)
  contrib/vhost-user-blk: fix get_config() information leak
  block/export: fix vhost-user-blk get_config() information leak
  block/export: make vhost-user-blk config space little-endian
  configure: introduce --enable-vhost-user-blk-server
  libvhost-user: follow QEMU comment style
  vhost-blk: set features before setting inflight feature
  Revert "vhost-blk: set features before setting inflight feature"
  net: Add vhost-vdpa in show_netdevs()
  vhost-vdpa: Add qemu_close in vhost_vdpa_cleanup
  vfio: Don't issue full 2^64 unmap
  virtio-iommu: Set supported page size mask
  vfio: Set IOMMU page size as per host supported page size
  memory: Add interface to set iommu page size mask
  virtio-iommu: Add notify_flag_changed() memory region callback
  virtio-iommu: Add replay() memory region callback
  virtio-iommu: Call memory notifiers in attach/detach
  virtio-iommu: Add memory notifiers for map/unmap
  virtio-iommu: Store memory region in endpoint struct
  virtio-iommu: Fix virtio_iommu_mr()
  hw/smbios: Fix leaked fd in save_opt_one() error path
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 49 insertions, 1 deletions

diff --git a/include/exec/memory.h b/include/exec/memory.h
index aff6ef7..0f3e6bc 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -397,6 +397,32 @@ struct IOMMUMemoryRegionClass {
      * @iommu: the IOMMUMemoryRegion
      */
     int (*num_indexes)(IOMMUMemoryRegion *iommu);
+
+    /**
+     * @iommu_set_page_size_mask:
+     *
+     * Restrict the page size mask that can be supported with a given IOMMU
+     * memory region. Used for example to propagate host physical IOMMU page
+     * size mask limitations to the virtual IOMMU.
+     *
+     * Optional method: if this method is not provided, then the default global
+     * page mask is used.
+     *
+     * @iommu: the IOMMUMemoryRegion
+     *
+     * @page_size_mask: a bitmask of supported page sizes. At least one bit,
+     * representing the smallest page size, must be set. Additional set bits
+     * represent supported block sizes. For example a host physical IOMMU that
+     * uses page tables with a page size of 4kB, and supports 2MB and 4GB
+     * blocks, will set mask 0x40201000. A granule of 4kB with indiscriminate
+     * block sizes is specified with mask 0xfffffffffffff000.
+     *
+     * Returns 0 on success, or a negative error. In case of failure, the error
+     * object must be created.
+     */
+     int (*iommu_set_page_size_mask)(IOMMUMemoryRegion *iommu,
+                                     uint64_t page_size_mask,
+                                     Error **errp);
 };
 
 typedef struct CoalescedMemoryRange CoalescedMemoryRange;
@@ -1410,6 +1436,18 @@ int memory_region_iommu_attrs_to_index(IOMMUMemoryRegion *iommu_mr,
 int memory_region_iommu_num_indexes(IOMMUMemoryRegion *iommu_mr);
 
 /**
+ * memory_region_iommu_set_page_size_mask: set the supported page
+ * sizes for a given IOMMU memory region
+ *
+ * @iommu_mr: IOMMU memory region
+ * @page_size_mask: supported page size mask
+ * @errp: pointer to Error*, to store an error if it happens.
+ */
+int memory_region_iommu_set_page_size_mask(IOMMUMemoryRegion *iommu_mr,
+                                           uint64_t page_size_mask,
+                                           Error **errp);
+
+/**
  * memory_region_name: get a memory region's name
  *
  * Returns the string that was used to initialize the memory region.
diff --git a/include/hw/mem/memory-device.h b/include/hw/mem/memory-device.h
index 30d7e99..48d2611 100644
--- a/include/hw/mem/memory-device.h
+++ b/include/hw/mem/memory-device.h
@@ -89,6 +89,16 @@ struct MemoryDeviceClass {
     MemoryRegion *(*get_memory_region)(MemoryDeviceState *md, Error **errp);
 
     /*
+     * Optional: Return the desired minimum alignment of the device in guest
+     * physical address space. The final alignment is computed based on this
+     * alignment and the alignment requirements of the memory region.
+     *
+     * Called when plugging the memory device to detect the required alignment
+     * during address assignment.
+     */
+    uint64_t (*get_min_alignment)(const MemoryDeviceState *md);
+
+    /*
      * Translate the memory device into #MemoryDeviceInfo.
      */
     void (*fill_device_info)(const MemoryDeviceState *md,
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index 839bfb1..4a8bc75 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -141,7 +141,7 @@ void vhost_dev_reset_inflight(struct vhost_inflight *inflight);
 void vhost_dev_free_inflight(struct vhost_inflight *inflight);
 void vhost_dev_save_inflight(struct vhost_inflight *inflight, QEMUFile *f);
 int vhost_dev_load_inflight(struct vhost_inflight *inflight, QEMUFile *f);
-int vhost_dev_prepare_inflight(struct vhost_dev *hdev);
+int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev);
 int vhost_dev_set_inflight(struct vhost_dev *dev,
                            struct vhost_inflight *inflight);
 int vhost_dev_get_inflight(struct vhost_dev *dev, uint16_t queue_size,