cregit-Linux how code gets into the kernel

Release 4.14 arch/x86/include/uapi/asm/kvm_para.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_ASM_X86_KVM_PARA_H

#define _UAPI_ASM_X86_KVM_PARA_H

#include <linux/types.h>
#include <asm/hyperv.h>

/* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx.  It
 * should be used to determine that a VM is running under KVM.
 */

#define KVM_CPUID_SIGNATURE	0x40000000

/* This CPUID returns a feature bitmap in eax.  Before enabling a particular
 * paravirtualization, the appropriate feature bit should be checked.
 */

#define KVM_CPUID_FEATURES	0x40000001

#define KVM_FEATURE_CLOCKSOURCE		0

#define KVM_FEATURE_NOP_IO_DELAY	1

#define KVM_FEATURE_MMU_OP		2
/* This indicates that the new set of kvmclock msrs
 * are available. The use of 0x11 and 0x12 is deprecated
 */

#define KVM_FEATURE_CLOCKSOURCE2        3

#define KVM_FEATURE_ASYNC_PF		4

#define KVM_FEATURE_STEAL_TIME		5

#define KVM_FEATURE_PV_EOI		6

#define KVM_FEATURE_PV_UNHALT		7

/* The last 8 bits are used to indicate how to interpret the flags field
 * in pvclock structure. If no bits are set, all flags are ignored.
 */

#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT	24


#define MSR_KVM_WALL_CLOCK  0x11

#define MSR_KVM_SYSTEM_TIME 0x12


#define KVM_MSR_ENABLED 1
/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */

#define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00

#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01

#define MSR_KVM_ASYNC_PF_EN 0x4b564d02

#define MSR_KVM_STEAL_TIME  0x4b564d03

#define MSR_KVM_PV_EOI_EN      0x4b564d04


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


#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)

/* 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 {
	
__u32 reason;
	
__u8 pad[60];
	
__u32 enabled;
};


#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


#endif /* _UAPI_ASM_X86_KVM_PARA_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
David Howells23783.75%116.67%
Marcelo Tosatti279.54%116.67%
Pan Xinhui103.53%116.67%
Raghavendra K T41.41%116.67%
Wanpeng Li41.41%116.67%
Greg Kroah-Hartman10.35%116.67%
Total283100.00%6100.00%
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