Doc: Grammatical edits to Shared mem based inter-VM comm doc
Signed-off-by: Deb Taylor <deb.taylor@intel.com>
This commit is contained in:
parent
e707cdc768
commit
315b7f3c00
|
@ -4,7 +4,7 @@ ACRN Shared Memory Based Inter-VM Communication
|
||||||
###############################################
|
###############################################
|
||||||
|
|
||||||
ACRN supports inter-virtual machine communication based on a shared
|
ACRN supports inter-virtual machine communication based on a shared
|
||||||
memory mechanism. The ACRN device model or hypervisor emulate a virtual
|
memory mechanism. The ACRN device model or hypervisor emulates a virtual
|
||||||
PCI device (called an ``ivshmem`` device) to expose the base address and
|
PCI device (called an ``ivshmem`` device) to expose the base address and
|
||||||
size of this shared memory.
|
size of this shared memory.
|
||||||
|
|
||||||
|
@ -38,7 +38,7 @@ ivshmem dm:
|
||||||
It will support notification/interrupt mechanism in the future.
|
It will support notification/interrupt mechanism in the future.
|
||||||
|
|
||||||
ivshmem server:
|
ivshmem server:
|
||||||
A daemon for inter-VM notification capability, that will work with **ivshmem
|
A daemon for inter-VM notification capability that will work with **ivshmem
|
||||||
dm**. This is currently **not implemented**, so the inter-VM communication
|
dm**. This is currently **not implemented**, so the inter-VM communication
|
||||||
doesn't support a notification mechanism.
|
doesn't support a notification mechanism.
|
||||||
|
|
||||||
|
@ -46,9 +46,8 @@ Ivshmem Device Introduction
|
||||||
***************************
|
***************************
|
||||||
|
|
||||||
The ``ivshmem`` device is a virtual standard PCI device consisting of
|
The ``ivshmem`` device is a virtual standard PCI device consisting of
|
||||||
two Base Address Registers (BARs): BAR0 is used for emulating interrupt related registers,
|
two Base Address Registers (BARs): BAR0 is used for emulating interrupt
|
||||||
and BAR2 is used for exposing shared memory region. The ``ivshmem`` device
|
related registers, and BAR2 is used for exposing shared memory region. The ``ivshmem`` device doesn't support any extra capabilities.
|
||||||
doesn't support any extra capabilities.
|
|
||||||
|
|
||||||
Configuration Space Definition
|
Configuration Space Definition
|
||||||
|
|
||||||
|
@ -121,13 +120,13 @@ where
|
||||||
Inter-VM Communication Example
|
Inter-VM Communication Example
|
||||||
******************************
|
******************************
|
||||||
|
|
||||||
The following example uses inter-vm communication between two Linux-based post-launched VMs (VM1 and
|
The following example uses inter-vm communication between two Linux-based
|
||||||
VM2).
|
post-launched VMs (VM1 and VM2).
|
||||||
|
|
||||||
.. note:: An ``ivshmem`` Windows driver exists and can be found `here <https://github.com/virtio-win/kvm-guest-drivers-windows/tree/master/ivshmem>`_
|
.. note:: An ``ivshmem`` Windows driver exists and can be found `here <https://github.com/virtio-win/kvm-guest-drivers-windows/tree/master/ivshmem>`_
|
||||||
|
|
||||||
1. Add a new virtual PCI device for both VMs: the device type is
|
1. Add a new virtual PCI device for both VMs: the device type is
|
||||||
``ivshmem``, shared memory name is ``test`` and shared memory size is
|
``ivshmem``, shared memory name is ``test``, and shared memory size is
|
||||||
4096 bytes. Both VMs must have the same shared memory name and size:
|
4096 bytes. Both VMs must have the same shared memory name and size:
|
||||||
|
|
||||||
- VM1 Launch Script Sample
|
- VM1 Launch Script Sample
|
||||||
|
@ -160,7 +159,7 @@ VM2).
|
||||||
--ovmf /usr/share/acrn/bios/OVMF.fd \
|
--ovmf /usr/share/acrn/bios/OVMF.fd \
|
||||||
$vm_name
|
$vm_name
|
||||||
|
|
||||||
2. Boot two VMs and use ``lspci | grep "shared memory"`` to check the virtual device is ready for each VM.
|
2. Boot two VMs and use ``lspci | grep "shared memory"`` to verify that the virtual device is ready for each VM.
|
||||||
|
|
||||||
- For VM1, it shows ``00:06.0 RAM memory: Red Hat, Inc. Inter-VM shared memory (rev 01)``
|
- For VM1, it shows ``00:06.0 RAM memory: Red Hat, Inc. Inter-VM shared memory (rev 01)``
|
||||||
- For VM2, it shows ``00:05.0 RAM memory: Red Hat, Inc. Inter-VM shared memory (rev 01)``
|
- For VM2, it shows ``00:05.0 RAM memory: Red Hat, Inc. Inter-VM shared memory (rev 01)``
|
||||||
|
|
Loading…
Reference in New Issue