1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_ASM_X86_KVM_PARA_H 3 #define _UAPI_ASM_X86_KVM_PARA_H 4 5 #include <linux/types.h> 6 #include <asm/hyperv.h> 7 8 /* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It 9 * should be used to determine that a VM is running under KVM. 10 */ 11 #define KVM_CPUID_SIGNATURE 0x40000000 12 13 /* This CPUID returns a feature bitmap in eax. Before enabling a particular 14 * paravirtualization, the appropriate feature bit should be checked. 15 */ 16 #define KVM_CPUID_FEATURES 0x40000001 17 #define KVM_FEATURE_CLOCKSOURCE 0 18 #define KVM_FEATURE_NOP_IO_DELAY 1 19 #define KVM_FEATURE_MMU_OP 2 20 /* This indicates that the new set of kvmclock msrs 21 * are available. The use of 0x11 and 0x12 is deprecated 22 */ 23 #define KVM_FEATURE_CLOCKSOURCE2 3 24 #define KVM_FEATURE_ASYNC_PF 4 25 #define KVM_FEATURE_STEAL_TIME 5 26 #define KVM_FEATURE_PV_EOI 6 27 #define KVM_FEATURE_PV_UNHALT 7 28 29 /* The last 8 bits are used to indicate how to interpret the flags field 30 * in pvclock structure. If no bits are set, all flags are ignored. 31 */ 32 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 33 34 #define MSR_KVM_WALL_CLOCK 0x11 35 #define MSR_KVM_SYSTEM_TIME 0x12 36 37 #define KVM_MSR_ENABLED 1 38 /* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 39 #define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 40 #define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 41 #define MSR_KVM_ASYNC_PF_EN 0x4b564d02 42 #define MSR_KVM_STEAL_TIME 0x4b564d03 43 #define MSR_KVM_PV_EOI_EN 0x4b564d04 44 45 struct kvm_steal_time { 46 __u64 steal; 47 __u32 version; 48 __u32 flags; 49 __u8 preempted; 50 __u8 u8_pad[3]; 51 __u32 pad[11]; 52 }; 53 54 #define KVM_CLOCK_PAIRING_WALLCLOCK 0 55 struct kvm_clock_pairing { 56 __s64 sec; 57 __s64 nsec; 58 __u64 tsc; 59 __u32 flags; 60 __u32 pad[9]; 61 }; 62 63 #define KVM_STEAL_ALIGNMENT_BITS 5 64 #define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 65 #define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 66 67 #define KVM_MAX_MMU_OP_BATCH 32 68 69 #define KVM_ASYNC_PF_ENABLED (1 << 0) 70 #define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 71 #define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 72 73 /* Operations for KVM_HC_MMU_OP */ 74 #define KVM_MMU_OP_WRITE_PTE 1 75 #define KVM_MMU_OP_FLUSH_TLB 2 76 #define KVM_MMU_OP_RELEASE_PT 3 77 78 /* Payload for KVM_HC_MMU_OP */ 79 struct kvm_mmu_op_header { 80 __u32 op; 81 __u32 pad; 82 }; 83 84 struct kvm_mmu_op_write_pte { 85 struct kvm_mmu_op_header header; 86 __u64 pte_phys; 87 __u64 pte_val; 88 }; 89 90 struct kvm_mmu_op_flush_tlb { 91 struct kvm_mmu_op_header header; 92 }; 93 94 struct kvm_mmu_op_release_pt { 95 struct kvm_mmu_op_header header; 96 __u64 pt_phys; 97 }; 98 99 #define KVM_PV_REASON_PAGE_NOT_PRESENT 1 100 #define KVM_PV_REASON_PAGE_READY 2 101 102 struct kvm_vcpu_pv_apf_data { 103 __u32 reason; 104 __u8 pad[60]; 105 __u32 enabled; 106 }; 107 108 #define KVM_PV_EOI_BIT 0 109 #define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 110 #define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 111 #define KVM_PV_EOI_DISABLED 0x0 112 113 #endif /* _UAPI_ASM_X86_KVM_PARA_H */ 114
