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 12/* This CPUID returns two feature bitmaps in eax, edx. Before enabling 13 * a particular paravirtualization, the appropriate feature bit should 14 * be checked in eax. The performance hint feature bit should be checked 15 * in edx. 16 */ 17#define KVM_CPUID_FEATURES 0x40000001 18#define KVM_FEATURE_CLOCKSOURCE 0 19#define KVM_FEATURE_NOP_IO_DELAY 1 20#define KVM_FEATURE_MMU_OP 2 21/* This indicates that the new set of kvmclock msrs 22 * are available. The use of 0x11 and 0x12 is deprecated 23 */ 24#define KVM_FEATURE_CLOCKSOURCE2 3 25#define KVM_FEATURE_ASYNC_PF 4 26#define KVM_FEATURE_STEAL_TIME 5 27#define KVM_FEATURE_PV_EOI 6 28#define KVM_FEATURE_PV_UNHALT 7 29#define KVM_FEATURE_PV_TLB_FLUSH 9 30#define KVM_FEATURE_ASYNC_PF_VMEXIT 10 31#define KVM_FEATURE_PV_SEND_IPI 11 32#define KVM_FEATURE_POLL_CONTROL 12 33#define KVM_FEATURE_PV_SCHED_YIELD 13 34 35#define KVM_HINTS_REALTIME 0 36 37/* The last 8 bits are used to indicate how to interpret the flags field 38 * in pvclock structure. If no bits are set, all flags are ignored. 39 */ 40#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 41 42#define MSR_KVM_WALL_CLOCK 0x11 43#define MSR_KVM_SYSTEM_TIME 0x12 44 45#define KVM_MSR_ENABLED 1 46/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 47#define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 48#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 49#define MSR_KVM_ASYNC_PF_EN 0x4b564d02 50#define MSR_KVM_STEAL_TIME 0x4b564d03 51#define MSR_KVM_PV_EOI_EN 0x4b564d04 52#define MSR_KVM_POLL_CONTROL 0x4b564d05 53 54struct kvm_steal_time { 55 __u64 steal; 56 __u32 version; 57 __u32 flags; 58 __u8 preempted; 59 __u8 u8_pad[3]; 60 __u32 pad[11]; 61}; 62 63#define KVM_VCPU_PREEMPTED (1 << 0) 64#define KVM_VCPU_FLUSH_TLB (1 << 1) 65 66#define KVM_CLOCK_PAIRING_WALLCLOCK 0 67struct kvm_clock_pairing { 68 __s64 sec; 69 __s64 nsec; 70 __u64 tsc; 71 __u32 flags; 72 __u32 pad[9]; 73}; 74 75#define KVM_STEAL_ALIGNMENT_BITS 5 76#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 77#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 78 79#define KVM_MAX_MMU_OP_BATCH 32 80 81#define KVM_ASYNC_PF_ENABLED (1 << 0) 82#define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 83#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 84 85/* Operations for KVM_HC_MMU_OP */ 86#define KVM_MMU_OP_WRITE_PTE 1 87#define KVM_MMU_OP_FLUSH_TLB 2 88#define KVM_MMU_OP_RELEASE_PT 3 89 90/* Payload for KVM_HC_MMU_OP */ 91struct kvm_mmu_op_header { 92 __u32 op; 93 __u32 pad; 94}; 95 96struct kvm_mmu_op_write_pte { 97 struct kvm_mmu_op_header header; 98 __u64 pte_phys; 99 __u64 pte_val; 100}; 101 102struct kvm_mmu_op_flush_tlb { 103 struct kvm_mmu_op_header header; 104}; 105 106struct kvm_mmu_op_release_pt { 107 struct kvm_mmu_op_header header; 108 __u64 pt_phys; 109}; 110 111#define KVM_PV_REASON_PAGE_NOT_PRESENT 1 112#define KVM_PV_REASON_PAGE_READY 2 113 114struct kvm_vcpu_pv_apf_data { 115 __u32 reason; 116 __u8 pad[60]; 117 __u32 enabled; 118}; 119 120#define KVM_PV_EOI_BIT 0 121#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 122#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 123#define KVM_PV_EOI_DISABLED 0x0 124 125#endif /* _UAPI_ASM_X86_KVM_PARA_H */ 126