[RFC PATCH 2/3] virtio_pci: add a definition of queue flag in ISR

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Already it has beed defined a config changed flag of ISR, but not the queue
flag. Add a macro for it.

Signed-off-by: Shunsuke Mie <mie@xxxxxxxxxx>
 include/uapi/linux/virtio_pci.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
index f703afc7ad31..d405bea27240 100644
--- a/include/uapi/linux/virtio_pci.h
+++ b/include/uapi/linux/virtio_pci.h
@@ -94,6 +94,9 @@
 #endif /* VIRTIO_PCI_NO_LEGACY */
+/* Bits for ISR status field:only when if MSI-X is disabled */
+/* The bit of the ISR which indicates a queue entry update. */
+#define VIRTIO_PCI_ISR_QUEUE		0x1
 /* The bit of the ISR which indicates a device configuration change. */
 /* Vector value used to disable MSI for queue */

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