[v3,11/11] doc: update nfp document

Message ID 20240617062708.2932037-12-chaoyong.he@corigine.com (mailing list archive)
State New
Delegated to: Maxime Coquelin
Headers
Series support software live migration |

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Commit Message

Chaoyong He June 17, 2024, 6:27 a.m. UTC
  From: Xinying Yu <xinying.yu@corigine.com>

Add the software assisted vDPA live migration feature
into NFP document.

Signed-off-by: Xinying Yu <xinying.yu@corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he@corigine.com>
Reviewed-by: Long Wu <long.wu@corigine.com>
Reviewed-by: Peng Zhang <peng.zhang@corigine.com>
---
 doc/guides/vdpadevs/nfp.rst | 9 +++++++++
 1 file changed, 9 insertions(+)
  

Comments

Maxime Coquelin June 18, 2024, 8:25 a.m. UTC | #1
On 6/17/24 08:27, Chaoyong He wrote:
> From: Xinying Yu <xinying.yu@corigine.com>
> 
> Add the software assisted vDPA live migration feature
> into NFP document.
> 
> Signed-off-by: Xinying Yu <xinying.yu@corigine.com>
> Reviewed-by: Chaoyong He <chaoyong.he@corigine.com>
> Reviewed-by: Long Wu <long.wu@corigine.com>
> Reviewed-by: Peng Zhang <peng.zhang@corigine.com>
> ---
>   doc/guides/vdpadevs/nfp.rst | 9 +++++++++
>   1 file changed, 9 insertions(+)
> 
> diff --git a/doc/guides/vdpadevs/nfp.rst b/doc/guides/vdpadevs/nfp.rst
> index dc9e94dbc8..e4736d9f61 100644
> --- a/doc/guides/vdpadevs/nfp.rst
> +++ b/doc/guides/vdpadevs/nfp.rst
> @@ -19,6 +19,15 @@ device will be probed by net/nfp driver and will used as a VF net device.
>   
>   This PMD uses (common/nfp) code to access the device firmware.
>   
> +Software Live Migration
> +~~~~~~~~~~~~~~~~~~~~~~~
> +
> +Now the NFP vDPA driver only support software assisted live migration mode.
> +In this mode, the driver will setup a software relay thread when live migration
> +happens, this thread will help device to log dirty pages. Although this mode
> +does not require hardware to implement a dirty page logging function block, it
> +will consume percentage of CPU resource depending on the network throughput.
> +
>   Per-Device Parameters
>   ~~~~~~~~~~~~~~~~~~~~~
>   
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

Thanks,
Maxime
  

Patch

diff --git a/doc/guides/vdpadevs/nfp.rst b/doc/guides/vdpadevs/nfp.rst
index dc9e94dbc8..e4736d9f61 100644
--- a/doc/guides/vdpadevs/nfp.rst
+++ b/doc/guides/vdpadevs/nfp.rst
@@ -19,6 +19,15 @@  device will be probed by net/nfp driver and will used as a VF net device.
 
 This PMD uses (common/nfp) code to access the device firmware.
 
+Software Live Migration
+~~~~~~~~~~~~~~~~~~~~~~~
+
+Now the NFP vDPA driver only support software assisted live migration mode.
+In this mode, the driver will setup a software relay thread when live migration
+happens, this thread will help device to log dirty pages. Although this mode
+does not require hardware to implement a dirty page logging function block, it
+will consume percentage of CPU resource depending on the network throughput.
+
 Per-Device Parameters
 ~~~~~~~~~~~~~~~~~~~~~