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authorMaciej S. Szmigiero <maciej.szmigiero@oracle.com>2025-03-04 23:03:48 +0100
committerCédric Le Goater <clg@redhat.com>2025-03-06 06:47:33 +0100
commiteb6608619a16ab949f3cf1138638d17afa45fe4d (patch)
tree677f385734d93b96652121320a6183da906f643f /include
parent47c7133629cc35b417b8f32512a4715ee53bfae3 (diff)
downloadfocaccia-qemu-eb6608619a16ab949f3cf1138638d17afa45fe4d.tar.gz
focaccia-qemu-eb6608619a16ab949f3cf1138638d17afa45fe4d.zip
vfio/migration: Move migration channel flags to vfio-common.h header file
This way they can also be referenced in other translation
units than migration.c.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Link: https://lore.kernel.org/qemu-devel/26a940f6b22c1b685818251b7a3ddbbca601b1d6.1741124640.git.maciej.szmigiero@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/hw/vfio/vfio-common.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 5c84ebb002..bf5d520871 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -36,6 +36,23 @@
 
 #define VFIO_MSG_PREFIX "vfio %s: "
 
+/*
+ * Flags to be used as unique delimiters for VFIO devices in the migration
+ * stream. These flags are composed as:
+ * 0xffffffff => MSB 32-bit all 1s
+ * 0xef10     => Magic ID, represents emulated (virtual) function IO
+ * 0x0000     => 16-bits reserved for flags
+ *
+ * The beginning of state information is marked by _DEV_CONFIG_STATE,
+ * _DEV_SETUP_STATE, or _DEV_DATA_STATE, respectively. The end of a
+ * certain state information is marked by _END_OF_STATE.
+ */
+#define VFIO_MIG_FLAG_END_OF_STATE      (0xffffffffef100001ULL)
+#define VFIO_MIG_FLAG_DEV_CONFIG_STATE  (0xffffffffef100002ULL)
+#define VFIO_MIG_FLAG_DEV_SETUP_STATE   (0xffffffffef100003ULL)
+#define VFIO_MIG_FLAG_DEV_DATA_STATE    (0xffffffffef100004ULL)
+#define VFIO_MIG_FLAG_DEV_INIT_DATA_SENT (0xffffffffef100005ULL)
+
 enum {
     VFIO_DEVICE_TYPE_PCI = 0,
     VFIO_DEVICE_TYPE_PLATFORM = 1,