From 8927a108a7662eb83eb667bc0c5a0633397122b1 Mon Sep 17 00:00:00 2001 From: Anatol Belski Date: Wed, 18 Feb 2026 14:48:02 +0000 Subject: 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 Signed-off-by: Wei Liu --- include/uapi/linux/mshv.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi/linux') 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, }; -- cgit v1.2.3