diff options
| author | Dexuan Cui <[email protected]> | 2023-08-24 01:07:03 -0700 |
|---|---|---|
| committer | Wei Liu <[email protected]> | 2023-08-25 00:04:56 +0000 |
| commit | 08e9d12077fcc7c4c4579d7dcd8093b59b01369e (patch) | |
| tree | 95784ca8040bc7c12a548bd874c51234ac32e11f /arch/x86/kernel/cpu/mshyperv.c | |
| parent | 86e619c922e616d8780833562a14a5bda329f0c3 (diff) | |
x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests
No logic change to SNP/VBS guests.
hv_isolation_type_tdx() will be used to instruct a TDX guest on Hyper-V to
do some TDX-specific operations, e.g. for a fully enlightened TDX guest
(i.e. without the paravisor), hv_do_hypercall() should use
__tdx_hypercall() and such a guest on Hyper-V should handle the Hyper-V
Event/Message/Monitor pages specially.
Reviewed-by: Michael Kelley <[email protected]>
Reviewed-by: Tianyu Lan <[email protected]>
Signed-off-by: Dexuan Cui <[email protected]>
Signed-off-by: Wei Liu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'arch/x86/kernel/cpu/mshyperv.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mshyperv.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index c8d3ca2b0e0e..63093870ec33 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -418,6 +418,8 @@ static void __init ms_hyperv_init_platform(void) static_branch_enable(&isolation_type_snp); else static_branch_enable(&isolation_type_en_snp); + } else if (hv_get_isolation_type() == HV_ISOLATION_TYPE_TDX) { + static_branch_enable(&isolation_type_tdx); } } |