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authorAnatol Belski <anbelski@linux.microsoft.com>2026-02-18 14:48:02 +0000
committerWei Liu <wei.liu@kernel.org>2026-02-18 23:54:37 +0000
commit8927a108a7662eb83eb667bc0c5a0633397122b1 (patch)
tree27a9929b2f51114737e34b6bfc5903ce3d46b720 /include/uapi
parenta284dbc96a47891a7a595a1c81b1e2da4d309cf6 (diff)
mshv: Add SMT_ENABLED_GUEST partition creation flag
Add support for HV_PARTITION_CREATION_FLAG_SMT_ENABLED_GUEST to allow userspace VMMs to enable SMT for guest partitions. Expose this via new MSHV_PT_BIT_SMT_ENABLED_GUEST flag in the UAPI. Without this flag, the hypervisor schedules guest VPs incorrectly, causing SMT unusable. Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/linux/mshv.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/mshv.h b/include/uapi/linux/mshv.h
index 7ef5dd67a232..e0645a34b55b 100644
--- a/include/uapi/linux/mshv.h
+++ b/include/uapi/linux/mshv.h
@@ -28,6 +28,7 @@ enum {
MSHV_PT_BIT_GPA_SUPER_PAGES,
MSHV_PT_BIT_CPU_AND_XSAVE_FEATURES,
MSHV_PT_BIT_NESTED_VIRTUALIZATION,
+ MSHV_PT_BIT_SMT_ENABLED_GUEST,
MSHV_PT_BIT_COUNT,
};