1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2012,2013 - ARM Ltd
7  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
81 	vcpu->arch.sve_max_vl = kvm_sve_max_vl;  in kvm_vcpu_enable_sve()
88 	set_bit(KVM_ARCH_FLAG_GUEST_HAS_SVE, &vcpu->kvm->arch.flags);  in kvm_vcpu_enable_sve()
93  * vcpu->arch.sve_state as necessary.
102 	vl = vcpu->arch.sve_max_vl;  in kvm_vcpu_finalize_sve()
107 	 * set_sve_vls().  Double-check here just to be sure:  in kvm_vcpu_finalize_sve()
111 		return -EIO;  in kvm_vcpu_finalize_sve()
116 		return -ENOMEM;  in kvm_vcpu_finalize_sve()
124 	vcpu->arch.sve_state = buf;  in kvm_vcpu_finalize_sve()
134 			return -EINVAL;  in kvm_arm_vcpu_finalize()
137 			return -EPERM;  in kvm_arm_vcpu_finalize()
142 	return -EINVAL;  in kvm_arm_vcpu_finalize()
155 	void *sve_state = vcpu->arch.sve_state;  in kvm_arm_vcpu_destroy()
161 	kfree(vcpu->arch.ccsidr);  in kvm_arm_vcpu_destroy()
167 		memset(vcpu->arch.sve_state, 0, vcpu_sve_state_size(vcpu));  in kvm_vcpu_reset_sve()
171  * kvm_reset_vcpu - sets core registers and sys_regs to reset value
175  * architecturally defined reset values, except for registers whose reset is
182  * on the memory-backed values of system registers, we want to do a full put if
194 	spin_lock(&vcpu->arch.mp_state_lock);  in kvm_reset_vcpu()
195 	reset_state = vcpu->arch.reset_state;  in kvm_reset_vcpu()
196 	vcpu->arch.reset_state.reset = false;  in kvm_reset_vcpu()
197 	spin_unlock(&vcpu->arch.mp_state_lock);  in kvm_reset_vcpu()
199 	/* Reset PMU outside of the non-preemptible section */  in kvm_reset_vcpu()
203 	loaded = (vcpu->cpu != -1);  in kvm_reset_vcpu()
223 	memset(&vcpu->arch.ctxt.fp_regs, 0, sizeof(vcpu->arch.ctxt.fp_regs));  in kvm_reset_vcpu()
224 	vcpu->arch.ctxt.spsr_abt = 0;  in kvm_reset_vcpu()
225 	vcpu->arch.ctxt.spsr_und = 0;  in kvm_reset_vcpu()
226 	vcpu->arch.ctxt.spsr_irq = 0;  in kvm_reset_vcpu()
227 	vcpu->arch.ctxt.spsr_fiq = 0;  in kvm_reset_vcpu()
228 	vcpu_gp_regs(vcpu)->pstate = pstate;  in kvm_reset_vcpu()
290 	 * Check with ARMv8.5-GTG that our PAGE_SIZE is supported at  in kvm_set_ipa_limit()
291 	 * Stage-2. If not, things will stop very quickly.  in kvm_set_ipa_limit()
295 		kvm_err("PAGE_SIZE not supported at Stage-2, giving up\n");  in kvm_set_ipa_limit()
296 		return -EINVAL;  in kvm_set_ipa_limit()
298 		kvm_debug("PAGE_SIZE supported at Stage-2 (default)\n");  in kvm_set_ipa_limit()
301 		kvm_debug("PAGE_SIZE supported at Stage-2 (advertised)\n");  in kvm_set_ipa_limit()
305 		return -EINVAL;  in kvm_set_ipa_limit()