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 7/* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It 8 * should be used to determine that a VM is running under KVM. 9 */ 10#define KVM_CPUID_SIGNATURE 0x40000000 11#define KVM_SIGNATURE "KVMKVMKVM\0\0\0" 12 13/* This CPUID returns two feature bitmaps in eax, edx. Before enabling 14 * a particular paravirtualization, the appropriate feature bit should 15 * be checked in eax. The performance hint feature bit should be checked 16 * in edx. 17 */ 18#define KVM_CPUID_FEATURES 0x40000001 19#define KVM_FEATURE_CLOCKSOURCE 0 20#define KVM_FEATURE_NOP_IO_DELAY 1 21#define KVM_FEATURE_MMU_OP 2 22/* This indicates that the new set of kvmclock msrs 23 * are available. The use of 0x11 and 0x12 is deprecated 24 */ 25#define KVM_FEATURE_CLOCKSOURCE2 3 26#define KVM_FEATURE_ASYNC_PF 4 27#define KVM_FEATURE_STEAL_TIME 5 28#define KVM_FEATURE_PV_EOI 6 29#define KVM_FEATURE_PV_UNHALT 7 30#define KVM_FEATURE_PV_TLB_FLUSH 9 31#define KVM_FEATURE_ASYNC_PF_VMEXIT 10 32#define KVM_FEATURE_PV_SEND_IPI 11 33#define KVM_FEATURE_POLL_CONTROL 12 34#define KVM_FEATURE_PV_SCHED_YIELD 13 35#define KVM_FEATURE_ASYNC_PF_INT 14 36#define KVM_FEATURE_MSI_EXT_DEST_ID 15 37#define KVM_FEATURE_HC_MAP_GPA_RANGE 16 38#define KVM_FEATURE_MIGRATION_CONTROL 17 39 40#define KVM_HINTS_REALTIME 0 41 42/* The last 8 bits are used to indicate how to interpret the flags field 43 * in pvclock structure. If no bits are set, all flags are ignored. 44 */ 45#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 46 47#define MSR_KVM_WALL_CLOCK 0x11 48#define MSR_KVM_SYSTEM_TIME 0x12 49 50#define KVM_MSR_ENABLED 1 51/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 52#define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 53#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 54#define MSR_KVM_ASYNC_PF_EN 0x4b564d02 55#define MSR_KVM_STEAL_TIME 0x4b564d03 56#define MSR_KVM_PV_EOI_EN 0x4b564d04 57#define MSR_KVM_POLL_CONTROL 0x4b564d05 58#define MSR_KVM_ASYNC_PF_INT 0x4b564d06 59#define MSR_KVM_ASYNC_PF_ACK 0x4b564d07 60#define MSR_KVM_MIGRATION_CONTROL 0x4b564d08 61 62struct kvm_steal_time { 63 __u64 steal; 64 __u32 version; 65 __u32 flags; 66 __u8 preempted; 67 __u8 u8_pad[3]; 68 __u32 pad[11]; 69}; 70 71#define KVM_VCPU_PREEMPTED (1 << 0) 72#define KVM_VCPU_FLUSH_TLB (1 << 1) 73 74#define KVM_CLOCK_PAIRING_WALLCLOCK 0 75struct kvm_clock_pairing { 76 __s64 sec; 77 __s64 nsec; 78 __u64 tsc; 79 __u32 flags; 80 __u32 pad[9]; 81}; 82 83#define KVM_STEAL_ALIGNMENT_BITS 5 84#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 85#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 86 87#define KVM_MAX_MMU_OP_BATCH 32 88 89#define KVM_ASYNC_PF_ENABLED (1 << 0) 90#define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 91#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 92#define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3) 93 94/* MSR_KVM_ASYNC_PF_INT */ 95#define KVM_ASYNC_PF_VEC_MASK __GENMASK(7, 0) 96 97/* MSR_KVM_MIGRATION_CONTROL */ 98#define KVM_MIGRATION_READY (1 << 0) 99 100/* KVM_HC_MAP_GPA_RANGE */ 101#define KVM_MAP_GPA_RANGE_PAGE_SZ_4K 0 102#define KVM_MAP_GPA_RANGE_PAGE_SZ_2M (1 << 0) 103#define KVM_MAP_GPA_RANGE_PAGE_SZ_1G (1 << 1) 104#define KVM_MAP_GPA_RANGE_ENC_STAT(n) (n << 4) 105#define KVM_MAP_GPA_RANGE_ENCRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(1) 106#define KVM_MAP_GPA_RANGE_DECRYPTED KVM_MAP_GPA_RANGE_ENC_STAT(0) 107 108/* Operations for KVM_HC_MMU_OP */ 109#define KVM_MMU_OP_WRITE_PTE 1 110#define KVM_MMU_OP_FLUSH_TLB 2 111#define KVM_MMU_OP_RELEASE_PT 3 112 113/* Payload for KVM_HC_MMU_OP */ 114struct kvm_mmu_op_header { 115 __u32 op; 116 __u32 pad; 117}; 118 119struct kvm_mmu_op_write_pte { 120 struct kvm_mmu_op_header header; 121 __u64 pte_phys; 122 __u64 pte_val; 123}; 124 125struct kvm_mmu_op_flush_tlb { 126 struct kvm_mmu_op_header header; 127}; 128 129struct kvm_mmu_op_release_pt { 130 struct kvm_mmu_op_header header; 131 __u64 pt_phys; 132}; 133 134#define KVM_PV_REASON_PAGE_NOT_PRESENT 1 135#define KVM_PV_REASON_PAGE_READY 2 136 137struct kvm_vcpu_pv_apf_data { 138 /* Used for 'page not present' events delivered via #PF */ 139 __u32 flags; 140 141 /* Used for 'page ready' events delivered via interrupt notification */ 142 __u32 token; 143 144 __u8 pad[56]; 145}; 146 147#define KVM_PV_EOI_BIT 0 148#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 149#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 150#define KVM_PV_EOI_DISABLED 0x0 151 152#endif /* _UAPI_ASM_X86_KVM_PARA_H */ 153