[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kvm / cpuid.h

#ifndef ARCH_X86_KVM_CPUID_H
#define ARCH_X86_KVM_CPUID_H

#include "x86.h"
#include <asm/cpu.h>

int kvm_update_cpuid(struct kvm_vcpu *vcpu);
bool kvm_mpx_supported(void);
struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
					      u32 function, u32 index);
int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
			    struct kvm_cpuid_entry2 __user *entries,
			    unsigned int type);
int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
			     struct kvm_cpuid *cpuid,
			     struct kvm_cpuid_entry __user *entries);
int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
			      struct kvm_cpuid2 *cpuid,
			      struct kvm_cpuid_entry2 __user *entries);
int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
			      struct kvm_cpuid2 *cpuid,
			      struct kvm_cpuid_entry2 __user *entries);
void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);

int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu);

static inline int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.maxphyaddr;
}

static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	if (!static_cpu_has(X86_FEATURE_XSAVE))
		return false;

	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	return best && (best->ecx & bit(X86_FEATURE_XSAVE));
}

static inline bool guest_cpuid_has_mtrr(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	return best && (best->edx & bit(X86_FEATURE_MTRR));
}

static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
}

static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_SMEP));
}

static inline bool guest_cpuid_has_smap(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_SMAP));
}

static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
}

static inline bool guest_cpuid_has_pku(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ecx & bit(X86_FEATURE_PKU));
}

static inline bool guest_cpuid_has_longmode(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->edx & bit(X86_FEATURE_LM));
}

static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->ecx & bit(X86_FEATURE_OSVW));
}

static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	return best && (best->ecx & bit(X86_FEATURE_PCID));
}

static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	return best && (best->ecx & bit(X86_FEATURE_X2APIC));
}

static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0, 0);
	return best && best->ebx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx;
}

static inline bool guest_cpuid_has_gbpages(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->edx & bit(X86_FEATURE_GBPAGES));
}

static inline bool guest_cpuid_has_rtm(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	return best && (best->ebx & bit(X86_FEATURE_RTM));
}

static inline bool guest_cpuid_has_rdtscp(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	return best && (best->edx & bit(X86_FEATURE_RDTSCP));
}

/*
 * NRIPS is provided through cpuidfn 0x8000000a.edx bit 3
 */
#define BIT_NRIPS	3

static inline bool guest_cpuid_has_nrips(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x8000000a, 0);

	/*
	 * NRIPS is a scattered cpuid feature, so we can't use
	 * X86_FEATURE_NRIPS here (X86_FEATURE_NRIPS would be bit
	 * position 8, not 3).
	 */
	return best && (best->edx & bit(BIT_NRIPS));
}
#undef BIT_NRIPS

static inline int guest_cpuid_family(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
	if (!best)
		return -1;

	return x86_family(best->eax);
}

static inline int guest_cpuid_model(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
	if (!best)
		return -1;

	return x86_model(best->eax);
}

static inline int guest_cpuid_stepping(struct kvm_vcpu *vcpu)
{
	struct kvm_cpuid_entry2 *best;

	best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
	if (!best)
		return -1;

	return x86_stepping(best->eax);
}

static inline bool supports_cpuid_fault(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.msr_platform_info & MSR_PLATFORM_INFO_CPUID_FAULT;
}

static inline bool cpuid_fault_enabled(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.msr_misc_features_enables &
		  MSR_MISC_FEATURES_ENABLES_CPUID_FAULT;
}

#endif
Commit	Line	Data
00b27a3e AK	1	#ifndef ARCH_X86_KVM_CPUID_H
	2	#define ARCH_X86_KVM_CPUID_H
	3
	4	#include "x86.h"
91713faf	5	#include <asm/cpu.h>
00b27a3e	6
dd598091	7	int kvm_update_cpuid(struct kvm_vcpu *vcpu);
a87036ad	8	bool kvm_mpx_supported(void);
00b27a3e AK	9	struct kvm_cpuid_entry2 kvm_find_cpuid_entry(struct kvm_vcpu vcpu,
00b27a3e AK	10	u32 function, u32 index);
9c15bb1d BP	11	int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
	12	struct kvm_cpuid_entry2 __user *entries,
	13	unsigned int type);
00b27a3e AK	14	int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
	15	struct kvm_cpuid *cpuid,
	16	struct kvm_cpuid_entry __user *entries);
	17	int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
	18	struct kvm_cpuid2 *cpuid,
	19	struct kvm_cpuid_entry2 __user *entries);
	20	int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
	21	struct kvm_cpuid2 *cpuid,
	22	struct kvm_cpuid_entry2 __user *entries);
62046e5a	23	void kvm_cpuid(struct kvm_vcpu vcpu, u32 eax, u32 ebx, u32 ecx, u32 *edx);
00b27a3e	24
5a4f55cd EK	25	int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu);
	26
	27	static inline int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
	28	{
	29	return vcpu->arch.maxphyaddr;
	30	}
00b27a3e AK	31
	32	static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
	33	{
	34	struct kvm_cpuid_entry2 *best;
	35
6d1068b3	36	if (!static_cpu_has(X86_FEATURE_XSAVE))
1d804d07	37	return false;
6d1068b3	38
00b27a3e AK	39	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	40	return best && (best->ecx & bit(X86_FEATURE_XSAVE));
	41	}
	42
e24dea2a PB	43	static inline bool guest_cpuid_has_mtrr(struct kvm_vcpu *vcpu)
	44	{
	45	struct kvm_cpuid_entry2 *best;
	46
	47	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	48	return best && (best->edx & bit(X86_FEATURE_MTRR));
	49	}
	50
ba904635 WA	51	static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
	52	{
	53	struct kvm_cpuid_entry2 *best;
	54
	55	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	56	return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
	57	}
	58
00b27a3e AK	59	static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
	60	{
	61	struct kvm_cpuid_entry2 *best;
	62
	63	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	64	return best && (best->ebx & bit(X86_FEATURE_SMEP));
	65	}
	66
97ec8c06 FW	67	static inline bool guest_cpuid_has_smap(struct kvm_vcpu *vcpu)
	68	{
	69	struct kvm_cpuid_entry2 *best;
	70
	71	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	72	return best && (best->ebx & bit(X86_FEATURE_SMAP));
	73	}
	74
00b27a3e AK	75	static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
	76	{
	77	struct kvm_cpuid_entry2 *best;
	78
	79	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	80	return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
	81	}
	82
b9baba86 HH	83	static inline bool guest_cpuid_has_pku(struct kvm_vcpu *vcpu)
	84	{
	85	struct kvm_cpuid_entry2 *best;
	86
	87	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	88	return best && (best->ecx & bit(X86_FEATURE_PKU));
	89	}
	90
660a5d51 PB	91	static inline bool guest_cpuid_has_longmode(struct kvm_vcpu *vcpu)
	92	{
	93	struct kvm_cpuid_entry2 *best;
	94
	95	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	96	return best && (best->edx & bit(X86_FEATURE_LM));
	97	}
	98
2b036c6b BO	99	static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
	100	{
	101	struct kvm_cpuid_entry2 *best;
	102
	103	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	104	return best && (best->ecx & bit(X86_FEATURE_OSVW));
	105	}
	106
ad756a16 MJ	107	static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
	108	{
	109	struct kvm_cpuid_entry2 *best;
	110
	111	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	112	return best && (best->ecx & bit(X86_FEATURE_PCID));
	113	}
	114
58cb628d JK	115	static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
	116	{
	117	struct kvm_cpuid_entry2 *best;
	118
	119	best = kvm_find_cpuid_entry(vcpu, 1, 0);
	120	return best && (best->ecx & bit(X86_FEATURE_X2APIC));
	121	}
	122
a0c0feb5 PB	123	static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu)
	124	{
	125	struct kvm_cpuid_entry2 *best;
	126
	127	best = kvm_find_cpuid_entry(vcpu, 0, 0);
	128	return best && best->ebx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx;
	129	}
	130
5f7dde7b NA	131	static inline bool guest_cpuid_has_gbpages(struct kvm_vcpu *vcpu)
	132	{
	133	struct kvm_cpuid_entry2 *best;
	134
	135	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	136	return best && (best->edx & bit(X86_FEATURE_GBPAGES));
	137	}
6f43ed01 NA	138
	139	static inline bool guest_cpuid_has_rtm(struct kvm_vcpu *vcpu)
	140	{
	141	struct kvm_cpuid_entry2 *best;
	142
	143	best = kvm_find_cpuid_entry(vcpu, 7, 0);
	144	return best && (best->ebx & bit(X86_FEATURE_RTM));
	145	}
c447e76b	146
1cea0ce6 XG	147	static inline bool guest_cpuid_has_rdtscp(struct kvm_vcpu *vcpu)
	148	{
	149	struct kvm_cpuid_entry2 *best;
	150
	151	best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
	152	return best && (best->edx & bit(X86_FEATURE_RDTSCP));
	153	}
6092d3d3 JR	154
	155	/*
	156	* NRIPS is provided through cpuidfn 0x8000000a.edx bit 3
	157	*/
	158	#define BIT_NRIPS 3
	159
	160	static inline bool guest_cpuid_has_nrips(struct kvm_vcpu *vcpu)
	161	{
	162	struct kvm_cpuid_entry2 *best;
	163
	164	best = kvm_find_cpuid_entry(vcpu, 0x8000000a, 0);
	165
	166	/*
	167	* NRIPS is a scattered cpuid feature, so we can't use
	168	* X86_FEATURE_NRIPS here (X86_FEATURE_NRIPS would be bit
	169	* position 8, not 3).
	170	*/
	171	return best && (best->edx & bit(BIT_NRIPS));
	172	}
	173	#undef BIT_NRIPS
	174
91713faf BP	175	static inline int guest_cpuid_family(struct kvm_vcpu *vcpu)
	176	{
	177	struct kvm_cpuid_entry2 *best;
	178
	179	best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
	180	if (!best)
	181	return -1;
	182
	183	return x86_family(best->eax);
	184	}
	185
	186	static inline int guest_cpuid_model(struct kvm_vcpu *vcpu)
	187	{
	188	struct kvm_cpuid_entry2 *best;
	189
	190	best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
	191	if (!best)
	192	return -1;
	193
	194	return x86_model(best->eax);
	195	}
	196
	197	static inline int guest_cpuid_stepping(struct kvm_vcpu *vcpu)
	198	{
	199	struct kvm_cpuid_entry2 *best;
	200
	201	best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
	202	if (!best)
	203	return -1;
	204
	205	return x86_stepping(best->eax);
	206	}
	207
db2336a8 KH	208	static inline bool supports_cpuid_fault(struct kvm_vcpu *vcpu)
	209	{
	210	return vcpu->arch.msr_platform_info & MSR_PLATFORM_INFO_CPUID_FAULT;
	211	}
	212
	213	static inline bool cpuid_fault_enabled(struct kvm_vcpu *vcpu)
	214	{
	215	return vcpu->arch.msr_misc_features_enables &
	216	MSR_MISC_FEATURES_ENABLES_CPUID_FAULT;
	217	}
	218
00b27a3e	219	#endif