61 int kvm_update_cpuid(struct kvm_vcpu *vcpu)  in kvm_update_cpuid()  argument
64 	struct kvm_lapic *apic = vcpu->arch.apic;  in kvm_update_cpuid()
66 	best = kvm_find_cpuid_entry(vcpu, 1, 0);  in kvm_update_cpuid()
73 		if (kvm_read_cr4_bits(vcpu, X86_CR4_OSXSAVE))  in kvm_update_cpuid()
84 	best = kvm_find_cpuid_entry(vcpu, 0xD, 0);  in kvm_update_cpuid()
86 		vcpu->arch.guest_supported_xcr0 = 0;  in kvm_update_cpuid()
87 		vcpu->arch.guest_xstate_size = XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET;  in kvm_update_cpuid()
89 		vcpu->arch.guest_supported_xcr0 =  in kvm_update_cpuid()
92 		vcpu->arch.guest_xstate_size = best->ebx =  in kvm_update_cpuid()
93 			xstate_required_size(vcpu->arch.xcr0, false);  in kvm_update_cpuid()
96 	best = kvm_find_cpuid_entry(vcpu, 0xD, 1);  in kvm_update_cpuid()
98 		best->ebx = xstate_required_size(vcpu->arch.xcr0, true);  in kvm_update_cpuid()
100 	vcpu->arch.eager_fpu = use_eager_fpu() || guest_cpuid_has_mpx(vcpu);  in kvm_update_cpuid()
101 	if (vcpu->arch.eager_fpu)  in kvm_update_cpuid()
102 		kvm_x86_ops->fpu_activate(vcpu);  in kvm_update_cpuid()
108 	best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);  in kvm_update_cpuid()
114 	vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);  in kvm_update_cpuid()
116 	kvm_pmu_refresh(vcpu);  in kvm_update_cpuid()
128 static void cpuid_fix_nx_cap(struct kvm_vcpu *vcpu)  in cpuid_fix_nx_cap()  argument
134 	for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {  in cpuid_fix_nx_cap()
135 		e = &vcpu->arch.cpuid_entries[i];  in cpuid_fix_nx_cap()
147 int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu)  in cpuid_query_maxphyaddr()  argument
151 	best = kvm_find_cpuid_entry(vcpu, 0x80000000, 0);  in cpuid_query_maxphyaddr()
154 	best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);  in cpuid_query_maxphyaddr()
163 int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,  in kvm_vcpu_ioctl_set_cpuid()  argument
182 		vcpu->arch.cpuid_entries[i].function = cpuid_entries[i].function;  in kvm_vcpu_ioctl_set_cpuid()
183 		vcpu->arch.cpuid_entries[i].eax = cpuid_entries[i].eax;  in kvm_vcpu_ioctl_set_cpuid()
184 		vcpu->arch.cpuid_entries[i].ebx = cpuid_entries[i].ebx;  in kvm_vcpu_ioctl_set_cpuid()
185 		vcpu->arch.cpuid_entries[i].ecx = cpuid_entries[i].ecx;  in kvm_vcpu_ioctl_set_cpuid()
186 		vcpu->arch.cpuid_entries[i].edx = cpuid_entries[i].edx;  in kvm_vcpu_ioctl_set_cpuid()
187 		vcpu->arch.cpuid_entries[i].index = 0;  in kvm_vcpu_ioctl_set_cpuid()
188 		vcpu->arch.cpuid_entries[i].flags = 0;  in kvm_vcpu_ioctl_set_cpuid()
189 		vcpu->arch.cpuid_entries[i].padding[0] = 0;  in kvm_vcpu_ioctl_set_cpuid()
190 		vcpu->arch.cpuid_entries[i].padding[1] = 0;  in kvm_vcpu_ioctl_set_cpuid()
191 		vcpu->arch.cpuid_entries[i].padding[2] = 0;  in kvm_vcpu_ioctl_set_cpuid()
193 	vcpu->arch.cpuid_nent = cpuid->nent;  in kvm_vcpu_ioctl_set_cpuid()
194 	cpuid_fix_nx_cap(vcpu);  in kvm_vcpu_ioctl_set_cpuid()
195 	kvm_apic_set_version(vcpu);  in kvm_vcpu_ioctl_set_cpuid()
196 	kvm_x86_ops->cpuid_update(vcpu);  in kvm_vcpu_ioctl_set_cpuid()
197 	r = kvm_update_cpuid(vcpu);  in kvm_vcpu_ioctl_set_cpuid()
205 int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,  in kvm_vcpu_ioctl_set_cpuid2()  argument
215 	if (copy_from_user(&vcpu->arch.cpuid_entries, entries,  in kvm_vcpu_ioctl_set_cpuid2()
218 	vcpu->arch.cpuid_nent = cpuid->nent;  in kvm_vcpu_ioctl_set_cpuid2()
219 	kvm_apic_set_version(vcpu);  in kvm_vcpu_ioctl_set_cpuid2()
220 	kvm_x86_ops->cpuid_update(vcpu);  in kvm_vcpu_ioctl_set_cpuid2()
221 	r = kvm_update_cpuid(vcpu);  in kvm_vcpu_ioctl_set_cpuid2()
226 int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,  in kvm_vcpu_ioctl_get_cpuid2()  argument
233 	if (cpuid->nent < vcpu->arch.cpuid_nent)  in kvm_vcpu_ioctl_get_cpuid2()
236 	if (copy_to_user(entries, &vcpu->arch.cpuid_entries,  in kvm_vcpu_ioctl_get_cpuid2()
237 			 vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))  in kvm_vcpu_ioctl_get_cpuid2()
242 	cpuid->nent = vcpu->arch.cpuid_nent;  in kvm_vcpu_ioctl_get_cpuid2()
737 static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu *vcpu, int i)  in move_to_next_stateful_cpuid_entry()  argument
739 	struct kvm_cpuid_entry2 *e = &vcpu->arch.cpuid_entries[i];  in move_to_next_stateful_cpuid_entry()
740 	int j, nent = vcpu->arch.cpuid_nent;  in move_to_next_stateful_cpuid_entry()
745 		struct kvm_cpuid_entry2 *ej = &vcpu->arch.cpuid_entries[j];  in move_to_next_stateful_cpuid_entry()
769 struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,  in kvm_find_cpuid_entry()  argument
775 	for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {  in kvm_find_cpuid_entry()
778 		e = &vcpu->arch.cpuid_entries[i];  in kvm_find_cpuid_entry()
781 				move_to_next_stateful_cpuid_entry(vcpu, i);  in kvm_find_cpuid_entry()
795 static struct kvm_cpuid_entry2* check_cpuid_limit(struct kvm_vcpu *vcpu,  in check_cpuid_limit()  argument
800 	maxlevel = kvm_find_cpuid_entry(vcpu, function & 0x80000000, 0);  in check_cpuid_limit()
804 		maxlevel = kvm_find_cpuid_entry(vcpu, 0, 0);  in check_cpuid_limit()
808 	return kvm_find_cpuid_entry(vcpu, maxlevel->eax, index);  in check_cpuid_limit()
811 void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)  in kvm_cpuid()  argument
816 	best = kvm_find_cpuid_entry(vcpu, function, index);  in kvm_cpuid()
819 		best = check_cpuid_limit(vcpu, function, index);  in kvm_cpuid()
824 	if (is_guest_mode(vcpu) && function == 0xa)  in kvm_cpuid()
838 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu)  in kvm_emulate_cpuid()  argument
842 	function = eax = kvm_register_read(vcpu, VCPU_REGS_RAX);  in kvm_emulate_cpuid()
843 	ecx = kvm_register_read(vcpu, VCPU_REGS_RCX);  in kvm_emulate_cpuid()
844 	kvm_cpuid(vcpu, &eax, &ebx, &ecx, &edx);  in kvm_emulate_cpuid()
845 	kvm_register_write(vcpu, VCPU_REGS_RAX, eax);  in kvm_emulate_cpuid()
846 	kvm_register_write(vcpu, VCPU_REGS_RBX, ebx);  in kvm_emulate_cpuid()
847 	kvm_register_write(vcpu, VCPU_REGS_RCX, ecx);  in kvm_emulate_cpuid()
848 	kvm_register_write(vcpu, VCPU_REGS_RDX, edx);  in kvm_emulate_cpuid()
849 	kvm_x86_ops->skip_emulated_instruction(vcpu);  in kvm_emulate_cpuid()