diff options
Diffstat (limited to 'virtio-v1.0-wd01-part1-specification.txt')
| -rw-r--r-- | virtio-v1.0-wd01-part1-specification.txt | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/virtio-v1.0-wd01-part1-specification.txt b/virtio-v1.0-wd01-part1-specification.txt index b407391..f711ece 100644 --- a/virtio-v1.0-wd01-part1-specification.txt +++ b/virtio-v1.0-wd01-part1-specification.txt @@ -387,8 +387,8 @@ descriptors! Regrettably, initial driver implementations used simple layouts, and devices came to rely on it, despite this specification wording. In addition, the specification for virtio_blk SCSI commands required -intuiting field lengths from frame boundaries (see "2.4.2.5.1. Legacy -Interface: Device Operation") +intuiting field lengths from frame boundaries (see + "2.4.2.5.1. Legacy Interface: Device Operation") It is thus recommended that when using legacy interfaces, transitional drivers be conservative in their assumptions, unless the @@ -500,8 +500,8 @@ with an index specified by the “avail_event” is written in the available ring (equivalently, until the idx field in the available ring will reach the value avail_event + 1). The method employed by the device is controlled by the guest through the -VIRTIO_RING_F_EVENT_IDX feature bit (see "2.6. Reserved -Feature Bits").[7] +VIRTIO_RING_F_EVENT_IDX feature bit ( +see "2.6. Reserved Feature Bits").[7] Each entry in the ring is a pair: the head entry of the descriptor chain describing the buffer (this matches an entry @@ -1040,8 +1040,8 @@ Legacy Interface. When used through the Legacy Interface, Transitional Devices must assume that Feature Bits 32 to 63 are not acknowledged by Driver. -As legacy devices had no configuration generation field, see "2.1.3.1. -Legacy Interface: Configuration Space" for workarounds. +As legacy devices had no configuration generation field, +see "2.1.3.1. Legacy Interface: Configuration Space" for workarounds. 2.3.1.3. PCI-specific Initialization And Device Operation -------------------------------------------------------- @@ -2505,15 +2505,16 @@ the different features the driver negotiated. the num_buffers field is set to zero. 4. The header and packet are added as one output buffer to the - transmitq, and the device is notified of the new entry (see "2.4.1.4. - Notifying The Device").[19] + transmitq, and the device is notified of the new entry + (see "2.4.1.4. Notifying The Device").[19] 2.4.1.5.1.1. Packet Transmission Interrupt ----------------------------------------- Often a driver will suppress transmission interrupts using the -VRING_AVAIL_F_NO_INTERRUPT flag (see "2.4.2. Receiving Used Buffers From -The Device") and check for used packets in the transmit path of following +VRING_AVAIL_F_NO_INTERRUPT flag + (see "2.4.2. Receiving Used Buffers From The Device") +and check for used packets in the transmit path of following packets. The normal behavior in this interrupt handler is to retrieve and |