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| author | Dexuan Cui <decui@microsoft.com> | 2023-08-24 10:07:03 +0200 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2023-08-25 02:04:56 +0200 |
| commit | 08e9d12077fcc7c4c4579d7dcd8093b59b01369e (patch) | |
| tree | 95784ca8040bc7c12a548bd874c51234ac32e11f /include | |
| parent | x86/hyperv: Fix undefined reference to isolation_type_en_snp without CONFIG_H... (diff) | |
| download | linux-08e9d12077fcc7c4c4579d7dcd8093b59b01369e.tar.xz linux-08e9d12077fcc7c4c4579d7dcd8093b59b01369e.zip | |
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 <mikelley@microsoft.com>
Reviewed-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20230824080712.30327-2-decui@microsoft.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/mshyperv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index efd0d2aedad3..82eba2d5fc4c 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -66,6 +66,7 @@ extern u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr); extern u64 hv_do_fast_hypercall8(u16 control, u64 input8); extern bool hv_isolation_type_snp(void); extern bool hv_isolation_type_en_snp(void); +bool hv_isolation_type_tdx(void); /* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */ static inline int hv_result(u64 status) |