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[Qemu-devel] [PATCH v1 14/17] hw/virtio/virtio-blk.h: introduce VIRTIO_B
From: |
Ming Lei |
Subject: |
[Qemu-devel] [PATCH v1 14/17] hw/virtio/virtio-blk.h: introduce VIRTIO_BLK_F_MQ |
Date: |
Tue, 5 Aug 2014 11:33:15 +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 49ac234..5b0fb91 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 v1 05/17] garbage collector: introduced for support of bypass coroutine, (continued)
- [Qemu-devel] [PATCH v1 05/17] garbage collector: introduced for support of bypass coroutine, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 06/17] block: introduce bdrv_co_can_bypass_co, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 07/17] block: support to bypass qemu coroutinue, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 08/17] Revert "raw-posix: drop raw_get_aio_fd() since it is no longer used", Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 09/17] dataplane: enable selective bypassing coroutine, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 10/17] linux-aio: fix submit aio as a batch, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 11/17] linux-aio: handling -EAGAIN for !s->io_q.plugged case, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 12/17] linux-aio: increase max event to 256, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 13/17] linux-aio: remove 'node' from 'struct qemu_laiocb', Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 14/17] hw/virtio/virtio-blk.h: introduce VIRTIO_BLK_F_MQ,
Ming Lei <=
- [Qemu-devel] [PATCH v1 15/17] virtio-blk: support multi queue for non-dataplane, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 16/17] virtio-blk: dataplane: support multi virtqueue, Ming Lei, 2014/08/04
- [Qemu-devel] [PATCH v1 17/17] hw/virtio-pci: introduce num_queues property, Ming Lei, 2014/08/04
- Re: [Qemu-devel] [PATCH v1 00/17] dataplane: optimization and multi virtqueue support, Stefan Hajnoczi, 2014/08/05
- Re: [Qemu-devel] [PATCH v1 00/17] dataplane: optimization and multi virtqueue support, Kevin Wolf, 2014/08/05