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
78 	vcpu->arch.sve_max_vl = kvm_sve_max_vl;  in kvm_vcpu_enable_sve()
90  * vcpu->arch.sve_state as necessary.
99 	vl = vcpu->arch.sve_max_vl;  in kvm_vcpu_finalize_sve()
104 	 * set_sve_vls().  Double-check here just to be sure:  in kvm_vcpu_finalize_sve()
108 		return -EIO;  in kvm_vcpu_finalize_sve()
113 		return -ENOMEM;  in kvm_vcpu_finalize_sve()
121 	vcpu->arch.sve_state = buf;  in kvm_vcpu_finalize_sve()
131 			return -EINVAL;  in kvm_arm_vcpu_finalize()
134 			return -EPERM;  in kvm_arm_vcpu_finalize()
139 	return -EINVAL;  in kvm_arm_vcpu_finalize()
152 	void *sve_state = vcpu->arch.sve_state;  in kvm_arm_vcpu_destroy()
159 	kfree(vcpu->arch.ccsidr);  in kvm_arm_vcpu_destroy()
165 		memset(vcpu->arch.sve_state, 0, vcpu_sve_state_size(vcpu));  in kvm_vcpu_reset_sve()
174  * kvm_reset_vcpu - sets core registers and sys_regs to reset value
178  * architecturally defined reset values, except for registers whose reset is
185  * on the memory-backed values of system registers, we want to do a full put if
197 	spin_lock(&vcpu->arch.mp_state_lock);  in kvm_reset_vcpu()
198 	reset_state = vcpu->arch.reset_state;  in kvm_reset_vcpu()
199 	vcpu->arch.reset_state.reset = false;  in kvm_reset_vcpu()
200 	spin_unlock(&vcpu->arch.mp_state_lock);  in kvm_reset_vcpu()
202 	/* Reset PMU outside of the non-preemptible section */  in kvm_reset_vcpu()
206 	loaded = (vcpu->cpu != -1);  in kvm_reset_vcpu()
230 	memset(&vcpu->arch.ctxt.fp_regs, 0, sizeof(vcpu->arch.ctxt.fp_regs));  in kvm_reset_vcpu()
231 	vcpu->arch.ctxt.spsr_abt = 0;  in kvm_reset_vcpu()
232 	vcpu->arch.ctxt.spsr_und = 0;  in kvm_reset_vcpu()
233 	vcpu->arch.ctxt.spsr_irq = 0;  in kvm_reset_vcpu()
234 	vcpu->arch.ctxt.spsr_fiq = 0;  in kvm_reset_vcpu()
235 	vcpu_gp_regs(vcpu)->pstate = pstate;  in kvm_reset_vcpu()
291 	 * Check with ARMv8.5-GTG that our PAGE_SIZE is supported at  in kvm_set_ipa_limit()
292 	 * Stage-2. If not, things will stop very quickly.  in kvm_set_ipa_limit()
296 		kvm_err("PAGE_SIZE not supported at Stage-2, giving up\n");  in kvm_set_ipa_limit()
297 		return -EINVAL;  in kvm_set_ipa_limit()
299 		kvm_debug("PAGE_SIZE supported at Stage-2 (default)\n");  in kvm_set_ipa_limit()
302 		kvm_debug("PAGE_SIZE supported at Stage-2 (advertised)\n");  in kvm_set_ipa_limit()
306 		return -EINVAL;  in kvm_set_ipa_limit()