Thread (82 messages) 82 messages, 3 authors, 2022-07-18
STALE1426d REVIEWED: 6 (6M)
Revisions (7)
  1. v6 [diff vs current]
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  4. v11 current
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  7. v14 [diff vs current]

[PATCH v11 24/40] virtio_pci: struct virtio_pci_common_cfg add queue_notify_data

From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: 2022-06-29 06:59:13
Also in: bpf, kvm, linux-remoteproc, linux-s390, linux-um, platform-driver-x86, virtualization
Subsystem: the rest, virtio core · Maintainers: Linus Torvalds, "Michael S. Tsirkin", Jason Wang

Add queue_notify_data in struct virtio_pci_common_cfg, which comes from
here https://github.com/oasis-tcs/virtio-spec/issues/89

Since I want to add queue_reset after queue_notify_data, I submitted
this patch first.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
 include/linux/virtio_pci_modern.h | 2 ++
 include/uapi/linux/virtio_pci.h   | 1 +
 2 files changed, 3 insertions(+)
diff --git a/include/linux/virtio_pci_modern.h b/include/linux/virtio_pci_modern.h
index c4f7ffbacb4e..9f31dde46f57 100644
--- a/include/linux/virtio_pci_modern.h
+++ b/include/linux/virtio_pci_modern.h
@@ -29,6 +29,8 @@ struct virtio_pci_common_cfg {
 	__le32 queue_avail_hi;		/* read-write */
 	__le32 queue_used_lo;		/* read-write */
 	__le32 queue_used_hi;		/* read-write */
+	__le16 queue_notify_data;	/* read-write */
+	__le16 padding;
 };
 
 struct virtio_pci_modern_device {
diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
index 247ec42af2c8..748b3eb62d2f 100644
--- a/include/uapi/linux/virtio_pci.h
+++ b/include/uapi/linux/virtio_pci.h
@@ -176,6 +176,7 @@ struct virtio_pci_cfg_cap {
 #define VIRTIO_PCI_COMMON_Q_AVAILHI	44
 #define VIRTIO_PCI_COMMON_Q_USEDLO	48
 #define VIRTIO_PCI_COMMON_Q_USEDHI	52
+#define VIRTIO_PCI_COMMON_Q_NDATA	56
 
 #endif /* VIRTIO_PCI_NO_MODERN */
 
-- 
2.31.0
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