diff options
| author | Tianyu Lan <tiala@microsoft.com> | 2023-08-18 13:29:12 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2023-08-22 03:38:20 +0300 |
| commit | 8387ce06d70bbbb97a0c168a52b68268ae0da075 (patch) | |
| tree | a4e0c65267595b475f3b9c9bb833775081acf1a6 /arch/x86/include | |
| parent | d6e2d652443751e290b2edb70173ec3c22f78fbe (diff) | |
| download | linux-8387ce06d70bbbb97a0c168a52b68268ae0da075.tar.xz | |
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 <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20230818102919.1318039-3-ltykernel@gmail.com
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/hyperv-tlfs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index cea95dcd27c2..4bf0b315b0ce 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -301,6 +301,13 @@ enum hv_isolation_type { #define HV_X64_MSR_TIME_REF_COUNT HV_REGISTER_TIME_REF_COUNT #define HV_X64_MSR_REFERENCE_TSC HV_REGISTER_REFERENCE_TSC +/* + * Registers are only accessible via HVCALL_GET_VP_REGISTERS hvcall and + * there is not associated MSR address. + */ +#define HV_X64_REGISTER_VSM_VP_STATUS 0x000D0003 +#define HV_X64_VTL_MASK GENMASK(3, 0) + /* Hyper-V memory host visibility */ enum hv_mem_host_visibility { VMBUS_PAGE_NOT_VISIBLE = 0, |