[xen master] SUPPORT.md: Document PSCI SYSTEM_SUSPEND support for guests

[patchbot@xxxxxxx]

commit 174896b7c170fa4c1d4e274562eb685768a14450
Author:     Mykola Kvach <mykola_kvach@xxxxxxxx>
AuthorDate: Tue Mar 24 14:26:36 2026 +0200
Commit:     Michal Orzel <michal.orzel@xxxxxxx>
CommitDate: Tue Mar 31 10:54:52 2026 +0200

    SUPPORT.md: Document PSCI SYSTEM_SUSPEND support for guests
    
    Add a new entry under the "Virtual Hardware, Hypervisor" section
    documenting support for the optional PSCI SYSTEM_SUSPEND function
    exposed to guests.
    
    This function is available via the virtual PSCI interface and allows
    guest domains (domUs) to initiate system suspend operations.
    
    The feature is currently marked as "Tech Preview".
    
    Signed-off-by: Mykola Kvach <mykola_kvach@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 SUPPORT.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/SUPPORT.md b/SUPPORT.md
index d441bccf37..8e7ab7cb3e 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: Tech Preview
 
 ## Virtual Hardware, QEMU
 
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generated by git-patchbot for /home/xen/git/xen.git#master