@@ -167,6 +167,8 @@ A vring address description
Note that a ring address is an IOVA if ``VIRTIO_F_IOMMU_PLATFORM`` has
been negotiated. Otherwise it is a user address.
+.. _memory_region_description:
+
Memory region description
^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -180,7 +182,7 @@ Memory region description
:user address: a 64-bit user address
-:mmap offset: 64-bit offset where region starts in the mapped memory
+:mmap offset: a 64-bit offset where region starts in the mapped memory
When the ``VHOST_USER_PROTOCOL_F_XEN_MMAP`` protocol feature has been
successfully negotiated, the memory region description contains two extra
@@ -190,7 +192,7 @@ fields at the end.
| guest address | size | user address | mmap offset | xen mmap flags | domid |
+---------------+------+--------------+-------------+----------------+-------+
-:xen mmap flags: 32-bit bit field
+:xen mmap flags: a 32-bit bit field
- Bit 0 is set for Xen foreign memory mapping.
- Bit 1 is set for Xen grant memory mapping.
@@ -211,7 +213,7 @@ Single memory region description
:padding: 64-bit
-A region is represented by Memory region description.
+:region: region is represented by :ref:`Memory region description <memory_region_description>`.
Multiple Memory regions description
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -224,7 +226,7 @@ Multiple Memory regions description
:padding: 32-bit
-A region is represented by Memory region description.
+:regions: regions field contains 8 regions of type :ref:`Memory region description <memory_region_description>`.
Log description
^^^^^^^^^^^^^^^
@@ -233,9 +235,9 @@ Log description
| log size | log offset |
+----------+------------+
-:log size: size of area used for logging
+:log size: a 64-bit size of area used for logging
-:log offset: offset from start of supplied file descriptor where
+:log offset: a 64-bit offset from start of supplied file descriptor where
logging starts (i.e. where guest address 0 would be
logged)
@@ -382,7 +384,7 @@ the kernel implementation.
The communication consists of the *front-end* sending message requests and
the *back-end* sending message replies. Most of the requests don't require
-replies. Here is a list of the ones that do:
+replies, except for the following requests:
* ``VHOST_USER_GET_FEATURES``
* ``VHOST_USER_GET_PROTOCOL_FEATURES``
@@ -1239,11 +1241,11 @@ Front-end message types
(*a vring descriptor index for split virtqueues* vs. *vring descriptor
indices for packed virtqueues*).
- When and as long as all of a device’s vrings are stopped, it is
+ When and as long as all of a device's vrings are stopped, it is
*suspended*, see :ref:`Suspended device state
<suspended_device_state>`.
- The request payload’s *num* field is currently reserved and must be
+ The request payload's *num* field is currently reserved and must be
set to 0.
``VHOST_USER_SET_VRING_KICK``
@@ -1662,7 +1664,7 @@ Front-end message types
:reply payload: ``u64``
Front-end and back-end negotiate a channel over which to transfer the
- back-end’s internal state during migration. Either side (front-end or
+ back-end's internal state during migration. Either side (front-end or
back-end) may create the channel. The nature of this channel is not
restricted or defined in this document, but whichever side creates it
must create a file descriptor that is provided to the respectively
@@ -1714,7 +1716,7 @@ Front-end message types
:request payload: N/A
:reply payload: ``u64``
- After transferring the back-end’s internal state during migration (see
+ After transferring the back-end's internal state during migration (see
the :ref:`Migrating back-end state <migrating_backend_state>`
section), check whether the back-end was able to successfully fully
process the state.
add a ref link to Memory region description, improve type description add extra type(64 bits) to Log description structure fields fix ’s to 's Signed-off-by: luzhixing12345 <luzhixing12345@gmail.com> --- docs/interop/vhost-user.rst | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-)