From 8387ce06d70bbbb97a0c168a52b68268ae0da075 Mon Sep 17 00:00:00 2001 From: Tianyu Lan Date: Fri, 18 Aug 2023 06:29:12 -0400 Subject: x86/hyperv: Set Virtual Trust Level in VMBus init message SEV-SNP guests on Hyper-V can run at multiple Virtual Trust Levels (VTL). During boot, get the VTL at which we're running using the GET_VP_REGISTERs hypercall, and save the value for future use. Then during VMBus initialization, set the VTL with the saved value as required in the VMBus init message. Reviewed-by: Dexuan Cui Reviewed-by: Michael Kelley Signed-off-by: Tianyu Lan Signed-off-by: Wei Liu Link: https://lore.kernel.org/r/20230818102919.1318039-3-ltykernel@gmail.com --- include/asm-generic/mshyperv.h | 1 + include/linux/hyperv.h | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 580c766958de..efd0d2aedad3 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -54,6 +54,7 @@ struct ms_hyperv_info { }; }; u64 shared_gpa_boundary; + u8 vtl; }; extern struct ms_hyperv_info ms_hyperv; extern bool hv_nested; diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index bfbc37ce223b..1f2bfec4abde 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -665,8 +665,8 @@ struct vmbus_channel_initiate_contact { u64 interrupt_page; struct { u8 msg_sint; - u8 padding1[3]; - u32 padding2; + u8 msg_vtl; + u8 reserved[6]; }; }; u64 monitor_page1; -- cgit v1.2.3