arch/x86/include/uapi/asm/kvm_para.h

Source file repositories/reference/linux-study-clean/arch/x86/include/uapi/asm/kvm_para.h

File Facts

System
Linux kernel
Corpus path
arch/x86/include/uapi/asm/kvm_para.h
Extension
.h
Size
4341 bytes
Lines
153
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct kvm_steal_time {
	__u64 steal;
	__u32 version;
	__u32 flags;
	__u8  preempted;
	__u8  u8_pad[3];
	__u32 pad[11];
};

#define KVM_VCPU_PREEMPTED          (1 << 0)
#define KVM_VCPU_FLUSH_TLB          (1 << 1)

#define KVM_CLOCK_PAIRING_WALLCLOCK 0
struct kvm_clock_pairing {
	__s64 sec;
	__s64 nsec;
	__u64 tsc;
	__u32 flags;
	__u32 pad[9];
};

#define KVM_STEAL_ALIGNMENT_BITS 5
#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)

#define KVM_MAX_MMU_OP_BATCH           32

#define KVM_ASYNC_PF_ENABLED			(1 << 0)
#define KVM_ASYNC_PF_SEND_ALWAYS		(1 << 1)
#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT	(1 << 2)
#define KVM_ASYNC_PF_DELIVERY_AS_INT		(1 << 3)

/* MSR_KVM_ASYNC_PF_INT */
#define KVM_ASYNC_PF_VEC_MASK			__GENMASK(7, 0)

/* MSR_KVM_MIGRATION_CONTROL */
#define KVM_MIGRATION_READY		(1 << 0)

/* KVM_HC_MAP_GPA_RANGE */
#define KVM_MAP_GPA_RANGE_PAGE_SZ_4K	0
#define KVM_MAP_GPA_RANGE_PAGE_SZ_2M	(1 << 0)
#define KVM_MAP_GPA_RANGE_PAGE_SZ_1G	(1 << 1)
#define KVM_MAP_GPA_RANGE_ENC_STAT(n)	(n << 4)
#define KVM_MAP_GPA_RANGE_ENCRYPTED	KVM_MAP_GPA_RANGE_ENC_STAT(1)
#define KVM_MAP_GPA_RANGE_DECRYPTED	KVM_MAP_GPA_RANGE_ENC_STAT(0)

/* Operations for KVM_HC_MMU_OP */
#define KVM_MMU_OP_WRITE_PTE            1
#define KVM_MMU_OP_FLUSH_TLB	        2
#define KVM_MMU_OP_RELEASE_PT	        3

/* Payload for KVM_HC_MMU_OP */
struct kvm_mmu_op_header {
	__u32 op;
	__u32 pad;
};

struct kvm_mmu_op_write_pte {
	struct kvm_mmu_op_header header;
	__u64 pte_phys;
	__u64 pte_val;
};

struct kvm_mmu_op_flush_tlb {
	struct kvm_mmu_op_header header;
};

struct kvm_mmu_op_release_pt {
	struct kvm_mmu_op_header header;
	__u64 pt_phys;
};

#define KVM_PV_REASON_PAGE_NOT_PRESENT 1
#define KVM_PV_REASON_PAGE_READY 2

struct kvm_vcpu_pv_apf_data {
	/* Used for 'page not present' events delivered via #PF */
	__u32 flags;

	/* Used for 'page ready' events delivered via interrupt notification */
	__u32 token;

	__u8 pad[56];
};

#define KVM_PV_EOI_BIT 0
#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)
#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK
#define KVM_PV_EOI_DISABLED 0x0

Annotation

Implementation Notes