diff options
Diffstat (limited to 'arch/x86/hyperv/ivm.c')
| -rw-r--r-- | arch/x86/hyperv/ivm.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index a4615b889f3e..651771534cae 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -385,9 +385,23 @@ int hv_snp_boot_ap(u32 apic_id, unsigned long start_ip, unsigned int cpu) return ret; } +u64 hv_snp_hypercall(u64 control, u64 param1, u64 param2) +{ + u64 hv_status; + + register u64 __r8 asm("r8") = param2; + asm volatile("vmmcall" + : "=a" (hv_status), ASM_CALL_CONSTRAINT, + "+c" (control), "+d" (param1), "+r" (__r8) + : : "cc", "memory", "r9", "r10", "r11"); + + return hv_status; +} + #else static inline void hv_ghcb_msr_write(u64 msr, u64 value) {} static inline void hv_ghcb_msr_read(u64 msr, u64 *value) {} +u64 hv_snp_hypercall(u64 control, u64 param1, u64 param2) { return U64_MAX; } #endif /* CONFIG_AMD_MEM_ENCRYPT */ #ifdef CONFIG_INTEL_TDX_GUEST @@ -437,6 +451,7 @@ u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2) #else static inline void hv_tdx_msr_write(u64 msr, u64 value) {} static inline void hv_tdx_msr_read(u64 msr, u64 *value) {} +u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2) { return U64_MAX; } #endif /* CONFIG_INTEL_TDX_GUEST */ #if defined(CONFIG_AMD_MEM_ENCRYPT) || defined(CONFIG_INTEL_TDX_GUEST) |