[RFC,01/27] vhost: Add vhost_dev_can_log

Commit Message

Eugenio Perez Martin Nov. 20, 2020, 6:50 p.m. UTC

Just syntactic sugar.

Signed-off-by: Eugenio Pérez <[e-mail]>
---
 hw/virtio/vhost.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Patch

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 614ccc2bcb..2bd8cdf893 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -61,6 +61,11 @@  bool vhost_has_free_slot(void)
     return slots_limit > used_memslots;
 }
 
+static bool vhost_dev_can_log(const struct vhost_dev *hdev)
+{
+    return hdev->features & (0x1ULL << VHOST_F_LOG_ALL);
+}
+
 static void vhost_dev_sync_region(struct vhost_dev *dev,
                                   MemoryRegionSection *section,
                                   uint64_t mfirst, uint64_t mlast,
@@ -1347,7 +1352,7 @@  int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
     };
 
     if (hdev->migration_blocker == NULL) {
-        if (!(hdev->features & (0x1ULL << VHOST_F_LOG_ALL))) {
+        if (!vhost_dev_can_log(hdev)) {
             error_setg(&hdev->migration_blocker,
                        "Migration disabled: vhost lacks VHOST_F_LOG_ALL feature.");
         } else if (vhost_dev_log_is_shared(hdev) && !qemu_memfd_alloc_check()) {