[RFC PATCH 1/4] 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>
Signed-off-by: Takanari Hayama <taki@xxxxxxxxxx>
---
 include/uapi/linux/virtio_pci.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
index f703afc7ad31..fa82afd6171a 100644
--- a/include/uapi/linux/virtio_pci.h
+++ b/include/uapi/linux/virtio_pci.h
@@ -94,6 +94,8 @@
 
 #endif /* VIRTIO_PCI_NO_LEGACY */
 
+/* Ths 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. */
 #define VIRTIO_PCI_ISR_CONFIG		0x2
 /* Vector value used to disable MSI for queue */
-- 
2.25.1

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