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x86/hyperv: Add sev-snp enlightened guest static key

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Introduce static key isolation_type_en_snp for enlightened
sev-snp guest check.

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/20230818102919.1318039-2-ltykernel@gmail.com
This commit is contained in:
Tianyu Lan
2023-08-18 06:29:11 -04:00
committed by Wei Liu
parent 4f74fb30ea
commit d6e2d65244
5 changed files with 36 additions and 5 deletions
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13
include/asm-generic/mshyperv.h
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@@ -36,15 +36,21 @@ struct ms_hyperv_info {
u32 nested_features;
u32 max_vp_index;
u32 max_lp_index;
u32 isolation_config_a;
union {
u32 isolation_config_a;
struct {
u32 paravisor_present : 1;
u32 reserved_a1 : 31;
};
};
union {
u32 isolation_config_b;
struct {
u32 cvm_type : 4;
u32 reserved1 : 1;
u32 reserved_b1 : 1;
u32 shared_gpa_boundary_active : 1;
u32 shared_gpa_boundary_bits : 6;
u32 reserved2 : 20;
u32 reserved_b2 : 20;
};
};
u64 shared_gpa_boundary;
@@ -58,6 +64,7 @@ extern void * __percpu *hyperv_pcpu_output_arg;
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);
/* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */
static inline int hv_result(u64 status)