[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH RFC 12/14] hw/virtio/virtio-blk.h: introduce VIRTIO_
From: |
Ming Lei |
Subject: |
[Qemu-devel] [PATCH RFC 12/14] hw/virtio/virtio-blk.h: introduce VIRTIO_BLK_F_MQ |
Date: |
Thu, 17 Jul 2014 00:31:19 +0800 |
Prepare for supporting mutli vqs per virtio-blk device.
Signed-off-by: Ming Lei <address@hidden>
---
include/hw/virtio/virtio-blk.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
index 45f8894..ad70c9a 100644
--- a/include/hw/virtio/virtio-blk.h
+++ b/include/hw/virtio/virtio-blk.h
@@ -42,6 +42,12 @@
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* write cache configurable */
+/*
+ * support multi vqs, and virtio_blk_config.num_queues is only
+ * available when this feature is enabled
+ */
+#define VIRTIO_BLK_F_MQ 12
+
#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
struct virtio_blk_config
@@ -58,6 +64,8 @@ struct virtio_blk_config
uint16_t min_io_size;
uint32_t opt_io_size;
uint8_t wce;
+ uint8_t unused;
+ uint16_t num_queues; /* must be at the end */
} QEMU_PACKED;
/* These two define direction. */
--
1.7.9.5
- [Qemu-devel] [PATCH RFC 02/14] qemu aio: prepare for supporting selective bypass coroutine, (continued)
- [Qemu-devel] [PATCH RFC 02/14] qemu aio: prepare for supporting selective bypass coroutine, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 03/14] block: support to bypass qemu coroutinue, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 04/14] Revert "raw-posix: drop raw_get_aio_fd() since it is no longer used", Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 05/14] dataplane: enable selective bypassing coroutine, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 06/14] qemu/obj_pool.h: introduce object allocation pool, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 07/14] dataplane: use object pool to speed up allocation for virtio blk request, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 08/14] linux-aio: fix submit aio as a batch, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 09/14] linux-aio: increase max event to 256, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 10/14] linux-aio: remove 'node' from 'struct qemu_laiocb', Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 11/14] hw/virtio-pci: introduce num_queues property, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 12/14] hw/virtio/virtio-blk.h: introduce VIRTIO_BLK_F_MQ,
Ming Lei <=
- [Qemu-devel] [PATCH RFC 13/14] hw/block/virtio-blk: create num_queues vqs if dataplane is enabled, Ming Lei, 2014/07/16
- [Qemu-devel] [PATCH RFC 14/14] dataplane: virtio-blk: support mutlti virtqueue, Ming Lei, 2014/07/16