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: /lib/modules/5.15.0-1075-aws/build/arch/x86/include/asm/ [ drwxr-xr-x ]
name : acrn.h /* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_ACRN_H #define _ASM_X86_ACRN_H /* * This CPUID returns feature bitmaps in EAX. * Guest VM uses this to detect the appropriate feature bit. */ #define ACRN_CPUID_FEATURES 0x40000001 /* Bit 0 indicates whether guest VM is privileged */ #define ACRN_FEATURE_PRIVILEGED_VM BIT(0) void acrn_setup_intr_handler(void (*handler)(void)); void acrn_remove_intr_handler(void); static inline u32 acrn_cpuid_base(void) { if (boot_cpu_has(X86_FEATURE_HYPERVISOR)) return hypervisor_cpuid_base("ACRNACRNACRN", 0); return 0; } /* * Hypercalls for ACRN * * - VMCALL instruction is used to implement ACRN hypercalls. * - ACRN hypercall ABI: * - Hypercall number is passed in R8 register. * - Up to 2 arguments are passed in RDI, RSI. * - Return value will be placed in RAX. * * Because GCC doesn't support R8 register as direct register constraints, use * supported constraint as input with a explicit MOV to R8 in beginning of asm. */ static inline long acrn_hypercall0(unsigned long hcall_id) { long result; asm volatile("movl %1, %%r8d\n\t" "vmcall\n\t" : "=a" (result) : "g" (hcall_id) : "r8", "memory"); return result; } static inline long acrn_hypercall1(unsigned long hcall_id, unsigned long param1) { long result; asm volatile("movl %1, %%r8d\n\t" "vmcall\n\t" : "=a" (result) : "g" (hcall_id), "D" (param1) : "r8", "memory"); return result; } static inline long acrn_hypercall2(unsigned long hcall_id, unsigned long param1, unsigned long param2) { long result; asm volatile("movl %1, %%r8d\n\t" "vmcall\n\t" : "=a" (result) : "g" (hcall_id), "D" (param1), "S" (param2) : "r8", "memory"); return result; } #endif /* _ASM_X86_ACRN_H */