1 // SPDX-License-Identifier: GPL-2.0
15 #include "kvm-s390.h"
17 int kvm_s390_pv_destroy_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc)  in kvm_s390_pv_destroy_cpu()  argument
23 				   UVC_CMD_DESTROY_SEC_CPU, rc, rrc);  in kvm_s390_pv_destroy_cpu()
25 		KVM_UV_EVENT(vcpu->kvm, 3,  in kvm_s390_pv_destroy_cpu()
26 			     "PROTVIRT DESTROY VCPU %d: rc %x rrc %x",  in kvm_s390_pv_destroy_cpu()
27 			     vcpu->vcpu_id, *rc, *rrc);  in kvm_s390_pv_destroy_cpu()
28 		WARN_ONCE(cc, "protvirt destroy cpu failed rc %x rrc %x",  in kvm_s390_pv_destroy_cpu()
29 			  *rc, *rrc);  in kvm_s390_pv_destroy_cpu()
33 		free_pages(vcpu->arch.pv.stor_base,  in kvm_s390_pv_destroy_cpu()
36 	free_page(sida_origin(vcpu->arch.sie_block));  in kvm_s390_pv_destroy_cpu()
37 	vcpu->arch.sie_block->pv_handle_cpu = 0;  in kvm_s390_pv_destroy_cpu()
38 	vcpu->arch.sie_block->pv_handle_config = 0;  in kvm_s390_pv_destroy_cpu()
39 	memset(&vcpu->arch.pv, 0, sizeof(vcpu->arch.pv));  in kvm_s390_pv_destroy_cpu()
40 	vcpu->arch.sie_block->sdf = 0;  in kvm_s390_pv_destroy_cpu()
46 	vcpu->arch.sie_block->gbea = 1;  in kvm_s390_pv_destroy_cpu()
52 int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc)  in kvm_s390_pv_create_cpu()  argument
61 		return -EINVAL;  in kvm_s390_pv_create_cpu()
63 	vcpu->arch.pv.stor_base = __get_free_pages(GFP_KERNEL_ACCOUNT,  in kvm_s390_pv_create_cpu()
65 	if (!vcpu->arch.pv.stor_base)  in kvm_s390_pv_create_cpu()
66 		return -ENOMEM;  in kvm_s390_pv_create_cpu()
69 	uvcb.guest_handle = kvm_s390_pv_get_handle(vcpu->kvm);  in kvm_s390_pv_create_cpu()
70 	uvcb.num = vcpu->arch.sie_block->icpua;  in kvm_s390_pv_create_cpu()
71 	uvcb.state_origin = (u64)vcpu->arch.sie_block;  in kvm_s390_pv_create_cpu()
72 	uvcb.stor_origin = (u64)vcpu->arch.pv.stor_base;  in kvm_s390_pv_create_cpu()
75 	vcpu->arch.sie_block->sidad = __get_free_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);  in kvm_s390_pv_create_cpu()
76 	if (!vcpu->arch.sie_block->sidad) {  in kvm_s390_pv_create_cpu()
77 		free_pages(vcpu->arch.pv.stor_base,  in kvm_s390_pv_create_cpu()
79 		return -ENOMEM;  in kvm_s390_pv_create_cpu()
83 	*rc = uvcb.header.rc;  in kvm_s390_pv_create_cpu()
85 	KVM_UV_EVENT(vcpu->kvm, 3,  in kvm_s390_pv_create_cpu()
86 		     "PROTVIRT CREATE VCPU: cpu %d handle %llx rc %x rrc %x",  in kvm_s390_pv_create_cpu()
87 		     vcpu->vcpu_id, uvcb.cpu_handle, uvcb.header.rc,  in kvm_s390_pv_create_cpu()
94 		return -EIO;  in kvm_s390_pv_create_cpu()
98 	vcpu->arch.pv.handle = uvcb.cpu_handle;  in kvm_s390_pv_create_cpu()
99 	vcpu->arch.sie_block->pv_handle_cpu = uvcb.cpu_handle;  in kvm_s390_pv_create_cpu()
100 	vcpu->arch.sie_block->pv_handle_config = kvm_s390_pv_get_handle(vcpu->kvm);  in kvm_s390_pv_create_cpu()
101 	vcpu->arch.sie_block->sdf = 2;  in kvm_s390_pv_create_cpu()
109 	vfree(kvm->arch.pv.stor_var);  in kvm_s390_pv_dealloc_vm()
110 	free_pages(kvm->arch.pv.stor_base,  in kvm_s390_pv_dealloc_vm()
112 	memset(&kvm->arch.pv, 0, sizeof(kvm->arch.pv));  in kvm_s390_pv_dealloc_vm()
122 	kvm->arch.pv.stor_var = NULL;  in kvm_s390_pv_alloc_vm()
123 	kvm->arch.pv.stor_base = __get_free_pages(GFP_KERNEL_ACCOUNT, get_order(base));  in kvm_s390_pv_alloc_vm()
124 	if (!kvm->arch.pv.stor_base)  in kvm_s390_pv_alloc_vm()
125 		return -ENOMEM;  in kvm_s390_pv_alloc_vm()
133 	mutex_lock(&kvm->slots_lock);  in kvm_s390_pv_alloc_vm()
134 	memslot = kvm_memslots(kvm)->memslots;  in kvm_s390_pv_alloc_vm()
135 	npages = memslot->base_gfn + memslot->npages;  in kvm_s390_pv_alloc_vm()
136 	mutex_unlock(&kvm->slots_lock);  in kvm_s390_pv_alloc_vm()
138 	kvm->arch.pv.guest_len = npages * PAGE_SIZE;  in kvm_s390_pv_alloc_vm()
148 	kvm->arch.pv.stor_var = vmalloc_no_huge(vlen);  in kvm_s390_pv_alloc_vm()
149 	if (!kvm->arch.pv.stor_var)  in kvm_s390_pv_alloc_vm()
155 	return -ENOMEM;  in kvm_s390_pv_alloc_vm()
159 int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc)  in kvm_s390_pv_deinit_vm()  argument
164 	s390_reset_acc(kvm->mm);  in kvm_s390_pv_deinit_vm()
167 			   UVC_CMD_DESTROY_SEC_CONF, rc, rrc);  in kvm_s390_pv_deinit_vm()
168 	WRITE_ONCE(kvm->arch.gmap->guest_handle, 0);  in kvm_s390_pv_deinit_vm()
169 	atomic_set(&kvm->mm->context.is_protected, 0);  in kvm_s390_pv_deinit_vm()
170 	KVM_UV_EVENT(kvm, 3, "PROTVIRT DESTROY VM: rc %x rrc %x", *rc, *rrc);  in kvm_s390_pv_deinit_vm()
171 	WARN_ONCE(cc, "protvirt destroy vm failed rc %x rrc %x", *rc, *rrc);  in kvm_s390_pv_deinit_vm()
175 	return cc ? -EIO : 0;  in kvm_s390_pv_deinit_vm()
178 int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc)  in kvm_s390_pv_init_vm()  argument
193 	uvcb.guest_stor_len = kvm->arch.pv.guest_len;  in kvm_s390_pv_init_vm()
194 	uvcb.guest_asce = kvm->arch.gmap->asce;  in kvm_s390_pv_init_vm()
195 	uvcb.guest_sca = (unsigned long)kvm->arch.sca;  in kvm_s390_pv_init_vm()
196 	uvcb.conf_base_stor_origin = (u64)kvm->arch.pv.stor_base;  in kvm_s390_pv_init_vm()
197 	uvcb.conf_virt_stor_origin = (u64)kvm->arch.pv.stor_var;  in kvm_s390_pv_init_vm()
200 	*rc = uvcb.header.rc;  in kvm_s390_pv_init_vm()
202 	KVM_UV_EVENT(kvm, 3, "PROTVIRT CREATE VM: handle %llx len %llx rc %x rrc %x",  in kvm_s390_pv_init_vm()
203 		     uvcb.guest_handle, uvcb.guest_stor_len, *rc, *rrc);  in kvm_s390_pv_init_vm()
206 	kvm->arch.pv.handle = uvcb.guest_handle;  in kvm_s390_pv_init_vm()
209 		if (uvcb.header.rc & UVC_RC_NEED_DESTROY)  in kvm_s390_pv_init_vm()
213 		return -EIO;  in kvm_s390_pv_init_vm()
215 	kvm->arch.gmap->guest_handle = uvcb.guest_handle;  in kvm_s390_pv_init_vm()
219 int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc,  in kvm_s390_pv_set_sec_parms()  argument
231 	*rc = uvcb.header.rc;  in kvm_s390_pv_set_sec_parms()
233 	KVM_UV_EVENT(kvm, 3, "PROTVIRT VM SET PARMS: rc %x rrc %x",  in kvm_s390_pv_set_sec_parms()
234 		     *rc, *rrc);  in kvm_s390_pv_set_sec_parms()
236 		atomic_set(&kvm->mm->context.is_protected, 1);  in kvm_s390_pv_set_sec_parms()
237 	return cc ? -EINVAL : 0;  in kvm_s390_pv_set_sec_parms()
241 		      u64 offset, u16 *rc, u16 *rrc)  in unpack_one()  argument
251 	int ret = gmap_make_secure(kvm->arch.gmap, addr, &uvcb);  in unpack_one()
253 	*rc = uvcb.header.rc;  in unpack_one()
256 	if (ret && ret != -EAGAIN)  in unpack_one()
257 		KVM_UV_EVENT(kvm, 3, "PROTVIRT VM UNPACK: failed addr %llx with rc %x rrc %x",  in unpack_one()
258 			     uvcb.gaddr, *rc, *rrc);  in unpack_one()
263 		       unsigned long tweak, u16 *rc, u16 *rrc)  in kvm_s390_pv_unpack()  argument
269 		return -EINVAL;  in kvm_s390_pv_unpack()
275 		ret = unpack_one(kvm, addr, tweak, offset, rc, rrc);  in kvm_s390_pv_unpack()
276 		if (ret == -EAGAIN) {  in kvm_s390_pv_unpack()
303 	KVM_UV_EVENT(vcpu->kvm, 3, "PROTVIRT SET CPU %d STATE %d rc %x rrc %x",  in kvm_s390_pv_set_cpu_state()
304 		     vcpu->vcpu_id, state, uvcb.header.rc, uvcb.header.rrc);  in kvm_s390_pv_set_cpu_state()
306 		return -EINVAL;  in kvm_s390_pv_set_cpu_state()