Re: [PATCH v9 3/4] SUPPORT.md: Document PSCI SYSTEM_SUSPEND support for guests

[Julien Grall <julien@xxxxxxx>]

Hi Mykola,

On 18/08/2025 09:49, Mykola Kvach wrote:
> From: Mykola Kvach <mykola_kvach@xxxxxxxx>
>
> Add a new entry under the "Virtual Hardware, QEMU" section documenting
> support for the optional PSCI SYSTEM_SUSPEND function exposed to guests.
>
> This function is available via the virtual PSCI (vPSCI) interface and
> allows guest domains (domUs) to initiate system suspend operations.
>
> The feature is currently marked as Experimental.
>
> Signed-off-by: Mykola Kvach <mykola_kvach@xxxxxxxx>
> ---
> Changes in v6:
> - Dropped the generic guest PSCI support entry (merged in a separate patch)
> - This patch now documents only the SYSTEM_SUSPEND optional function
> - Reworded commit message to match the final form after rebase
>
> Changes in v5:
> - Dropped ARM/PSCI entry: this refers to internal use of PSCI SMC calls,
>    which is not relevant for SUPPORT.md
> - Added a dedicated entry for PSCI SYSTEM_SUSPEND instead of generic guest
>    PSCI info; guest PSCI support was documented in a separate patch
> ---
>   SUPPORT.md | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/SUPPORT.md b/SUPPORT.md
> index 6a82a92189..b5ab049b52 100644
> --- a/SUPPORT.md
> +++ b/SUPPORT.md
> @@ -962,8 +962,9 @@ Emulated PSCI interface exposed to guests. We support all 
> mandatory
>   functions of PSCI 1.1. See below for the list of optional PSCI call
>   implemented and their status.
>   
> -   Status, Mandatory: Supported
> -   Status, MIGRATE_INFO_TYPE: Supported
> +    Status, Mandatory: Supported
> +    Status, MIGRATE_INFO_TYPE: Supported
> +    Status, SYSTEM_SUSPEND: Experimental
Experimental implies the feature is not complete. But it is unclear to 
me what is missing (or I probably forgotten). Can this be clarified in 
the commit message?
If there is nothing, then I think it can be a tech preview.

Cheers,

--
Julien Grall