[Qemu-devel] [PATCH 6/7] 128bit: adapt Virtio for UInt128 arithmetic

[Pierre Morel]

Virtio uses 128 bit arithmetic for memory areas.
Let's adapt to UInt128 bit arithmetic.

Signed-off-by: Pierre Morel <address@hidden>
---
 hw/virtio/dataplane/vring.c |    2 +-
 hw/virtio/vhost.c           |    4 ++--
 hw/virtio/virtio-balloon.c  |    2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c
index 68f1994..2551a42 100644
--- a/hw/virtio/dataplane/vring.c
+++ b/hw/virtio/dataplane/vring.c
@@ -31,7 +31,7 @@ static void *vring_map(MemoryRegion **mr, hwaddr phys, hwaddr 
len,
 {
     MemoryRegionSection section = memory_region_find(get_system_memory(), 
phys, len);
 
-    if (!section.mr || int128_get64(section.size) < len) {
+    if (!section.mr || uint128_to_64(section.size) < len) {
         goto out;
     }
     if (is_write && section.readonly) {
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index a08c36b..143ea6f 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -84,7 +84,7 @@ static int vhost_sync_dirty_bitmap(struct vhost_dev *dev,
         return 0;
     }
     start_addr = section->offset_within_address_space;
-    end_addr = range_get_last(start_addr, int128_get64(section->size));
+    end_addr = range_get_last(start_addr, uint128_to_64(section->size));
     start_addr = MAX(first, start_addr);
     end_addr = MIN(last, end_addr);
 
@@ -417,7 +417,7 @@ static void vhost_set_memory(MemoryListener *listener,
     struct vhost_dev *dev = container_of(listener, struct vhost_dev,
                                          memory_listener);
     hwaddr start_addr = section->offset_within_address_space;
-    ram_addr_t size = int128_get64(section->size);
+    ram_addr_t size = uint128_to_64(section->size);
     bool log_dirty =
         memory_region_get_dirty_log_mask(section->mr) & ~(1 << 
DIRTY_MEMORY_MIGRATION);
     int s = offsetof(struct vhost_memory, regions) +
diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index c419b17..d0db511 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -220,7 +220,7 @@ static void virtio_balloon_handle_output(VirtIODevice 
*vdev, VirtQueue *vq)
 
             /* FIXME: remove get_system_memory(), but how? */
             section = memory_region_find(get_system_memory(), pa, 1);
-            if (!int128_nz(section.size) || !memory_region_is_ram(section.mr))
+            if (!uint128_nz(section.size) || !memory_region_is_ram(section.mr))
                 continue;
 
             trace_virtio_balloon_handle_output(memory_region_name(section.mr),
-- 
1.7.1