1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2#ifndef _ASM_X86_KVM_PARA_H 3#define _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#define KVM_FEATURE_PV_TLB_FLUSH 9 29#define KVM_FEATURE_ASYNC_PF_VMEXIT 10 30 31/* The last 8 bits are used to indicate how to interpret the flags field 32 * in pvclock structure. If no bits are set, all flags are ignored. 33 */ 34#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24 35 36#define MSR_KVM_WALL_CLOCK 0x11 37#define MSR_KVM_SYSTEM_TIME 0x12 38 39#define KVM_MSR_ENABLED 1 40/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */ 41#define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00 42#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01 43#define MSR_KVM_ASYNC_PF_EN 0x4b564d02 44#define MSR_KVM_STEAL_TIME 0x4b564d03 45#define MSR_KVM_PV_EOI_EN 0x4b564d04 46 47struct kvm_steal_time { 48 __u64 steal; 49 __u32 version; 50 __u32 flags; 51 __u8 preempted; 52 __u8 u8_pad[3]; 53 __u32 pad[11]; 54}; 55 56#define KVM_VCPU_PREEMPTED (1 << 0) 57#define KVM_VCPU_FLUSH_TLB (1 << 1) 58 59#define KVM_CLOCK_PAIRING_WALLCLOCK 0 60struct kvm_clock_pairing { 61 __s64 sec; 62 __s64 nsec; 63 __u64 tsc; 64 __u32 flags; 65 __u32 pad[9]; 66}; 67 68#define KVM_STEAL_ALIGNMENT_BITS 5 69#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1))) 70#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1) 71 72#define KVM_MAX_MMU_OP_BATCH 32 73 74#define KVM_ASYNC_PF_ENABLED (1 << 0) 75#define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1) 76#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2) 77 78/* Operations for KVM_HC_MMU_OP */ 79#define KVM_MMU_OP_WRITE_PTE 1 80#define KVM_MMU_OP_FLUSH_TLB 2 81#define KVM_MMU_OP_RELEASE_PT 3 82 83/* Payload for KVM_HC_MMU_OP */ 84struct kvm_mmu_op_header { 85 __u32 op; 86 __u32 pad; 87}; 88 89struct kvm_mmu_op_write_pte { 90 struct kvm_mmu_op_header header; 91 __u64 pte_phys; 92 __u64 pte_val; 93}; 94 95struct kvm_mmu_op_flush_tlb { 96 struct kvm_mmu_op_header header; 97}; 98 99struct kvm_mmu_op_release_pt { 100 struct kvm_mmu_op_header header; 101 __u64 pt_phys; 102}; 103 104#define KVM_PV_REASON_PAGE_NOT_PRESENT 1 105#define KVM_PV_REASON_PAGE_READY 2 106 107struct kvm_vcpu_pv_apf_data { 108 __u32 reason; 109 __u8 pad[60]; 110 __u32 enabled; 111}; 112 113#define KVM_PV_EOI_BIT 0 114#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT) 115#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK 116#define KVM_PV_EOI_DISABLED 0x0 117 118#endif /* _ASM_X86_KVM_PARA_H */ 119