Lines Matching +full:gpa +full:- +full:1
1 // SPDX-License-Identifier: GPL-2.0
7 * Description: KVM functions specific to running nested KVM-HV guests
20 #include <asm/pte-walk.h>
32 struct kvmppc_vcore *vc = vcpu->arch.vcore; in kvmhv_save_hv_regs()
34 hr->pcr = vc->pcr | PCR_MASK; in kvmhv_save_hv_regs()
35 hr->dpdes = vc->dpdes; in kvmhv_save_hv_regs()
36 hr->hfscr = vcpu->arch.hfscr; in kvmhv_save_hv_regs()
37 hr->tb_offset = vc->tb_offset; in kvmhv_save_hv_regs()
38 hr->dawr0 = vcpu->arch.dawr0; in kvmhv_save_hv_regs()
39 hr->dawrx0 = vcpu->arch.dawrx0; in kvmhv_save_hv_regs()
40 hr->ciabr = vcpu->arch.ciabr; in kvmhv_save_hv_regs()
41 hr->purr = vcpu->arch.purr; in kvmhv_save_hv_regs()
42 hr->spurr = vcpu->arch.spurr; in kvmhv_save_hv_regs()
43 hr->ic = vcpu->arch.ic; in kvmhv_save_hv_regs()
44 hr->vtb = vc->vtb; in kvmhv_save_hv_regs()
45 hr->srr0 = vcpu->arch.shregs.srr0; in kvmhv_save_hv_regs()
46 hr->srr1 = vcpu->arch.shregs.srr1; in kvmhv_save_hv_regs()
47 hr->sprg[0] = vcpu->arch.shregs.sprg0; in kvmhv_save_hv_regs()
48 hr->sprg[1] = vcpu->arch.shregs.sprg1; in kvmhv_save_hv_regs()
49 hr->sprg[2] = vcpu->arch.shregs.sprg2; in kvmhv_save_hv_regs()
50 hr->sprg[3] = vcpu->arch.shregs.sprg3; in kvmhv_save_hv_regs()
51 hr->pidr = vcpu->arch.pid; in kvmhv_save_hv_regs()
52 hr->cfar = vcpu->arch.cfar; in kvmhv_save_hv_regs()
53 hr->ppr = vcpu->arch.ppr; in kvmhv_save_hv_regs()
54 hr->dawr1 = vcpu->arch.dawr1; in kvmhv_save_hv_regs()
55 hr->dawrx1 = vcpu->arch.dawrx1; in kvmhv_save_hv_regs()
63 for (; addr < ((unsigned long *) (regs + 1)); addr++) in byteswap_pt_regs()
69 hr->version = swab64(hr->version); in byteswap_hv_regs()
70 hr->lpid = swab32(hr->lpid); in byteswap_hv_regs()
71 hr->vcpu_token = swab32(hr->vcpu_token); in byteswap_hv_regs()
72 hr->lpcr = swab64(hr->lpcr); in byteswap_hv_regs()
73 hr->pcr = swab64(hr->pcr) | PCR_MASK; in byteswap_hv_regs()
74 hr->amor = swab64(hr->amor); in byteswap_hv_regs()
75 hr->dpdes = swab64(hr->dpdes); in byteswap_hv_regs()
76 hr->hfscr = swab64(hr->hfscr); in byteswap_hv_regs()
77 hr->tb_offset = swab64(hr->tb_offset); in byteswap_hv_regs()
78 hr->dawr0 = swab64(hr->dawr0); in byteswap_hv_regs()
79 hr->dawrx0 = swab64(hr->dawrx0); in byteswap_hv_regs()
80 hr->ciabr = swab64(hr->ciabr); in byteswap_hv_regs()
81 hr->hdec_expiry = swab64(hr->hdec_expiry); in byteswap_hv_regs()
82 hr->purr = swab64(hr->purr); in byteswap_hv_regs()
83 hr->spurr = swab64(hr->spurr); in byteswap_hv_regs()
84 hr->ic = swab64(hr->ic); in byteswap_hv_regs()
85 hr->vtb = swab64(hr->vtb); in byteswap_hv_regs()
86 hr->hdar = swab64(hr->hdar); in byteswap_hv_regs()
87 hr->hdsisr = swab64(hr->hdsisr); in byteswap_hv_regs()
88 hr->heir = swab64(hr->heir); in byteswap_hv_regs()
89 hr->asdr = swab64(hr->asdr); in byteswap_hv_regs()
90 hr->srr0 = swab64(hr->srr0); in byteswap_hv_regs()
91 hr->srr1 = swab64(hr->srr1); in byteswap_hv_regs()
92 hr->sprg[0] = swab64(hr->sprg[0]); in byteswap_hv_regs()
93 hr->sprg[1] = swab64(hr->sprg[1]); in byteswap_hv_regs()
94 hr->sprg[2] = swab64(hr->sprg[2]); in byteswap_hv_regs()
95 hr->sprg[3] = swab64(hr->sprg[3]); in byteswap_hv_regs()
96 hr->pidr = swab64(hr->pidr); in byteswap_hv_regs()
97 hr->cfar = swab64(hr->cfar); in byteswap_hv_regs()
98 hr->ppr = swab64(hr->ppr); in byteswap_hv_regs()
99 hr->dawr1 = swab64(hr->dawr1); in byteswap_hv_regs()
100 hr->dawrx1 = swab64(hr->dawrx1); in byteswap_hv_regs()
106 struct kvmppc_vcore *vc = vcpu->arch.vcore; in save_hv_return_state()
108 hr->dpdes = vc->dpdes; in save_hv_return_state()
109 hr->purr = vcpu->arch.purr; in save_hv_return_state()
110 hr->spurr = vcpu->arch.spurr; in save_hv_return_state()
111 hr->ic = vcpu->arch.ic; in save_hv_return_state()
112 hr->vtb = vc->vtb; in save_hv_return_state()
113 hr->srr0 = vcpu->arch.shregs.srr0; in save_hv_return_state()
114 hr->srr1 = vcpu->arch.shregs.srr1; in save_hv_return_state()
115 hr->sprg[0] = vcpu->arch.shregs.sprg0; in save_hv_return_state()
116 hr->sprg[1] = vcpu->arch.shregs.sprg1; in save_hv_return_state()
117 hr->sprg[2] = vcpu->arch.shregs.sprg2; in save_hv_return_state()
118 hr->sprg[3] = vcpu->arch.shregs.sprg3; in save_hv_return_state()
119 hr->pidr = vcpu->arch.pid; in save_hv_return_state()
120 hr->cfar = vcpu->arch.cfar; in save_hv_return_state()
121 hr->ppr = vcpu->arch.ppr; in save_hv_return_state()
122 switch (vcpu->arch.trap) { in save_hv_return_state()
124 hr->hdar = vcpu->arch.fault_dar; in save_hv_return_state()
125 hr->hdsisr = vcpu->arch.fault_dsisr; in save_hv_return_state()
126 hr->asdr = vcpu->arch.fault_gpa; in save_hv_return_state()
129 hr->asdr = vcpu->arch.fault_gpa; in save_hv_return_state()
132 hr->hfscr = ((~HFSCR_INTR_CAUSE & hr->hfscr) | in save_hv_return_state()
133 (HFSCR_INTR_CAUSE & vcpu->arch.hfscr)); in save_hv_return_state()
136 hr->heir = vcpu->arch.emul_inst; in save_hv_return_state()
143 struct kvmppc_vcore *vc = vcpu->arch.vcore; in restore_hv_regs()
145 vc->pcr = hr->pcr | PCR_MASK; in restore_hv_regs()
146 vc->dpdes = hr->dpdes; in restore_hv_regs()
147 vcpu->arch.hfscr = hr->hfscr; in restore_hv_regs()
148 vcpu->arch.dawr0 = hr->dawr0; in restore_hv_regs()
149 vcpu->arch.dawrx0 = hr->dawrx0; in restore_hv_regs()
150 vcpu->arch.ciabr = hr->ciabr; in restore_hv_regs()
151 vcpu->arch.purr = hr->purr; in restore_hv_regs()
152 vcpu->arch.spurr = hr->spurr; in restore_hv_regs()
153 vcpu->arch.ic = hr->ic; in restore_hv_regs()
154 vc->vtb = hr->vtb; in restore_hv_regs()
155 vcpu->arch.shregs.srr0 = hr->srr0; in restore_hv_regs()
156 vcpu->arch.shregs.srr1 = hr->srr1; in restore_hv_regs()
157 vcpu->arch.shregs.sprg0 = hr->sprg[0]; in restore_hv_regs()
158 vcpu->arch.shregs.sprg1 = hr->sprg[1]; in restore_hv_regs()
159 vcpu->arch.shregs.sprg2 = hr->sprg[2]; in restore_hv_regs()
160 vcpu->arch.shregs.sprg3 = hr->sprg[3]; in restore_hv_regs()
161 vcpu->arch.pid = hr->pidr; in restore_hv_regs()
162 vcpu->arch.cfar = hr->cfar; in restore_hv_regs()
163 vcpu->arch.ppr = hr->ppr; in restore_hv_regs()
164 vcpu->arch.dawr1 = hr->dawr1; in restore_hv_regs()
165 vcpu->arch.dawrx1 = hr->dawrx1; in restore_hv_regs()
171 struct kvmppc_vcore *vc = vcpu->arch.vcore; in kvmhv_restore_hv_return_state()
173 vc->dpdes = hr->dpdes; in kvmhv_restore_hv_return_state()
174 vcpu->arch.hfscr = hr->hfscr; in kvmhv_restore_hv_return_state()
175 vcpu->arch.purr = hr->purr; in kvmhv_restore_hv_return_state()
176 vcpu->arch.spurr = hr->spurr; in kvmhv_restore_hv_return_state()
177 vcpu->arch.ic = hr->ic; in kvmhv_restore_hv_return_state()
178 vc->vtb = hr->vtb; in kvmhv_restore_hv_return_state()
179 vcpu->arch.fault_dar = hr->hdar; in kvmhv_restore_hv_return_state()
180 vcpu->arch.fault_dsisr = hr->hdsisr; in kvmhv_restore_hv_return_state()
181 vcpu->arch.fault_gpa = hr->asdr; in kvmhv_restore_hv_return_state()
182 vcpu->arch.emul_inst = hr->heir; in kvmhv_restore_hv_return_state()
183 vcpu->arch.shregs.srr0 = hr->srr0; in kvmhv_restore_hv_return_state()
184 vcpu->arch.shregs.srr1 = hr->srr1; in kvmhv_restore_hv_return_state()
185 vcpu->arch.shregs.sprg0 = hr->sprg[0]; in kvmhv_restore_hv_return_state()
186 vcpu->arch.shregs.sprg1 = hr->sprg[1]; in kvmhv_restore_hv_return_state()
187 vcpu->arch.shregs.sprg2 = hr->sprg[2]; in kvmhv_restore_hv_return_state()
188 vcpu->arch.shregs.sprg3 = hr->sprg[3]; in kvmhv_restore_hv_return_state()
189 vcpu->arch.pid = hr->pidr; in kvmhv_restore_hv_return_state()
190 vcpu->arch.cfar = hr->cfar; in kvmhv_restore_hv_return_state()
191 vcpu->arch.ppr = hr->ppr; in kvmhv_restore_hv_return_state()
197 vcpu->arch.trap = 0; in kvmhv_nested_mmio_needed()
205 if (((vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) == KVM_MMIO_REG_GPR) in kvmhv_nested_mmio_needed()
206 && (vcpu->mmio_is_write == 0)) { in kvmhv_nested_mmio_needed()
207 vcpu->arch.nested_io_gpr = (gpa_t) regs_ptr + in kvmhv_nested_mmio_needed()
209 gpr[vcpu->arch.io_gpr]); in kvmhv_nested_mmio_needed()
210 vcpu->arch.io_gpr = KVM_MMIO_REG_NESTED_GPR; in kvmhv_nested_mmio_needed()
221 if (kvm_vcpu_read_guest(vcpu, hv_ptr, &l2_hv->version, in kvmhv_read_guest_state_and_regs()
222 sizeof(l2_hv->version))) in kvmhv_read_guest_state_and_regs()
223 return -1; in kvmhv_read_guest_state_and_regs()
226 l2_hv->version = swab64(l2_hv->version); in kvmhv_read_guest_state_and_regs()
228 size = hv_guest_state_size(l2_hv->version); in kvmhv_read_guest_state_and_regs()
230 return -1; in kvmhv_read_guest_state_and_regs()
244 size = hv_guest_state_size(l2_hv->version); in kvmhv_write_guest_state_and_regs()
246 return -1; in kvmhv_write_guest_state_and_regs()
257 struct kvmppc_vcore *vc = vcpu->arch.vcore; in load_l2_hv_regs()
271 *lpcr = kvmppc_filter_lpcr_hv(vcpu->kvm, in load_l2_hv_regs()
272 (vc->lpcr & ~mask) | (*lpcr & mask)); in load_l2_hv_regs()
278 vcpu->arch.hfscr = l2_hv->hfscr & (HFSCR_INTR_CAUSE | vcpu->arch.hfscr_permitted); in load_l2_hv_regs()
281 vcpu->arch.dawrx0 = l2_hv->dawrx0 & ~DAWRX_HYP; in load_l2_hv_regs()
282 vcpu->arch.dawrx1 = l2_hv->dawrx1 & ~DAWRX_HYP; in load_l2_hv_regs()
285 if ((l2_hv->ciabr & CIABR_PRIV) == CIABR_PRIV_HYPER) in load_l2_hv_regs()
286 vcpu->arch.ciabr = l2_hv->ciabr & ~CIABR_PRIV; in load_l2_hv_regs()
295 struct kvmppc_vcore *vc = vcpu->arch.vcore; in kvmhv_enter_nested_guest()
300 if (vcpu->kvm->arch.l1_ptcr == 0) in kvmhv_enter_nested_guest()
303 if (MSR_TM_TRANSACTIONAL(vcpu->arch.shregs.msr)) in kvmhv_enter_nested_guest()
333 if (MSR_TM_SUSPENDED(vcpu->arch.shregs.msr)) { in kvmhv_enter_nested_guest()
339 if (WARN_ON_ONCE(vcpu->arch.shregs.msr & MSR_TS_MASK)) in kvmhv_enter_nested_guest()
344 l2 = kvmhv_get_nested(vcpu->kvm, l2_hv.lpid, true); in kvmhv_enter_nested_guest()
347 if (!l2->l1_gr_to_hr) { in kvmhv_enter_nested_guest()
348 mutex_lock(&l2->tlb_lock); in kvmhv_enter_nested_guest()
350 mutex_unlock(&l2->tlb_lock); in kvmhv_enter_nested_guest()
354 vcpu->arch.regs.msr = vcpu->arch.shregs.msr; in kvmhv_enter_nested_guest()
355 saved_l1_regs = vcpu->arch.regs; in kvmhv_enter_nested_guest()
359 hdec_exp = l2_hv.hdec_expiry - vc->tb_offset; in kvmhv_enter_nested_guest()
360 vc->tb_offset += l2_hv.tb_offset; in kvmhv_enter_nested_guest()
361 vcpu->arch.dec_expires += l2_hv.tb_offset; in kvmhv_enter_nested_guest()
364 vcpu->arch.nested = l2; in kvmhv_enter_nested_guest()
365 vcpu->arch.nested_vcpu_id = l2_hv.vcpu_token; in kvmhv_enter_nested_guest()
366 vcpu->arch.nested_hfscr = l2_hv.hfscr; in kvmhv_enter_nested_guest()
367 vcpu->arch.regs = l2_regs; in kvmhv_enter_nested_guest()
370 vcpu->arch.shregs.msr = (vcpu->arch.regs.msr | MSR_ME) & ~MSR_HV; in kvmhv_enter_nested_guest()
375 vcpu->arch.ret = RESUME_GUEST; in kvmhv_enter_nested_guest()
376 vcpu->arch.trap = 0; in kvmhv_enter_nested_guest()
382 l2_regs = vcpu->arch.regs; in kvmhv_enter_nested_guest()
383 l2_regs.msr = vcpu->arch.shregs.msr; in kvmhv_enter_nested_guest()
384 delta_purr = vcpu->arch.purr - l2_hv.purr; in kvmhv_enter_nested_guest()
385 delta_spurr = vcpu->arch.spurr - l2_hv.spurr; in kvmhv_enter_nested_guest()
386 delta_ic = vcpu->arch.ic - l2_hv.ic; in kvmhv_enter_nested_guest()
387 delta_vtb = vc->vtb - l2_hv.vtb; in kvmhv_enter_nested_guest()
391 vcpu->arch.nested = NULL; in kvmhv_enter_nested_guest()
392 vcpu->arch.regs = saved_l1_regs; in kvmhv_enter_nested_guest()
393 vcpu->arch.shregs.msr = saved_l1_regs.msr & ~MSR_TS_MASK; in kvmhv_enter_nested_guest()
396 vcpu->arch.shregs.msr |= MSR_TS_S; in kvmhv_enter_nested_guest()
397 vc->tb_offset = saved_l1_hv.tb_offset; in kvmhv_enter_nested_guest()
399 vcpu->arch.dec_expires -= l2_hv.tb_offset; in kvmhv_enter_nested_guest()
401 vcpu->arch.purr += delta_purr; in kvmhv_enter_nested_guest()
402 vcpu->arch.spurr += delta_spurr; in kvmhv_enter_nested_guest()
403 vcpu->arch.ic += delta_ic; in kvmhv_enter_nested_guest()
404 vc->vtb += delta_vtb; in kvmhv_enter_nested_guest()
420 if (r == -EINTR) in kvmhv_enter_nested_guest()
423 if (vcpu->mmio_needed) { in kvmhv_enter_nested_guest()
428 return vcpu->arch.trap; in kvmhv_enter_nested_guest()
440 return -ENODEV; in kvmhv_nested_init()
442 /* Partition table entry is 1<<4 bytes in size, hence the 4. */ in kvmhv_nested_init()
444 /* Minimum partition table size is 1<<12 bytes */ in kvmhv_nested_init()
450 pr_err("kvm-hv: failed to allocated nested partition table\n"); in kvmhv_nested_init()
451 return -ENOMEM; in kvmhv_nested_init()
454 ptcr = __pa(pseries_partition_tb) | (ptb_order - 12); in kvmhv_nested_init()
457 pr_err("kvm-hv: Parent hypervisor does not support nesting (rc=%ld)\n", in kvmhv_nested_init()
461 return -ENODEV; in kvmhv_nested_init()
491 rc = plpar_hcall_norets(H_TLB_INVALIDATE, H_TLBIE_P1_ENC(2, 0, 1), in kvmhv_flush_lpid()
498 H_RPTI_PAGE_ALL, 0, -1UL); in kvmhv_flush_lpid()
521 __pa(gp->shadow_pgtable) | RADIX_PGD_INDEX_SIZE; in kvmhv_set_nested_ptbl()
522 kvmhv_set_ptbl_entry(gp->shadow_lpid, dw0, gp->process_table); in kvmhv_set_nested_ptbl()
527 * r4 = guest real address of partition table + log_2(size) - 12
532 struct kvm *kvm = vcpu->kvm; in kvmhv_set_partition_table()
537 srcu_idx = srcu_read_lock(&kvm->srcu); in kvmhv_set_partition_table()
539 if ((ptcr & PRTS_MASK) + 12 - 4 > KVM_MAX_NESTED_GUESTS_SHIFT || in kvmhv_set_partition_table()
540 !kvm_is_visible_gfn(vcpu->kvm, (ptcr & PRTB_MASK) >> PAGE_SHIFT)) in kvmhv_set_partition_table()
542 srcu_read_unlock(&kvm->srcu, srcu_idx); in kvmhv_set_partition_table()
544 kvm->arch.l1_ptcr = ptcr; in kvmhv_set_partition_table()
554 * r7 = to buffer (L1 gpa)
555 * r8 = from buffer (L1 gpa)
581 gp = kvmhv_get_nested(vcpu->kvm, l1_lpid, false); in kvmhv_copy_tofrom_guest_nested()
587 mutex_lock(&gp->tlb_lock); in kvmhv_copy_tofrom_guest_nested()
591 rc = __kvmhv_copy_tofrom_guest_radix(gp->shadow_lpid, pid, in kvmhv_copy_tofrom_guest_nested()
611 rc = __kvmhv_copy_tofrom_guest_radix(gp->shadow_lpid, pid, in kvmhv_copy_tofrom_guest_nested()
618 mutex_unlock(&gp->tlb_lock); in kvmhv_copy_tofrom_guest_nested()
630 * Caller must hold gp->tlb_lock.
637 struct kvm *kvm = gp->l1_host; in kvmhv_update_ptbl_cache()
639 ret = -EFAULT; in kvmhv_update_ptbl_cache()
640 ptbl_addr = (kvm->arch.l1_ptcr & PRTB_MASK) + (gp->l1_lpid << 4); in kvmhv_update_ptbl_cache()
641 if (gp->l1_lpid < (1ul << ((kvm->arch.l1_ptcr & PRTS_MASK) + 12 - 4))) { in kvmhv_update_ptbl_cache()
642 int srcu_idx = srcu_read_lock(&kvm->srcu); in kvmhv_update_ptbl_cache()
645 srcu_read_unlock(&kvm->srcu, srcu_idx); in kvmhv_update_ptbl_cache()
648 gp->l1_gr_to_hr = 0; in kvmhv_update_ptbl_cache()
649 gp->process_table = 0; in kvmhv_update_ptbl_cache()
651 gp->l1_gr_to_hr = be64_to_cpu(ptbl_entry.patb0); in kvmhv_update_ptbl_cache()
652 gp->process_table = be64_to_cpu(ptbl_entry.patb1); in kvmhv_update_ptbl_cache()
659 idr_init(&kvm->arch.kvm_nested_guest_idr); in kvmhv_vm_nested_init()
664 return idr_find(&kvm->arch.kvm_nested_guest_idr, lpid); in __find_nested()
669 if (idr_alloc(&kvm->arch.kvm_nested_guest_idr, in __prealloc_nested()
670 NULL, lpid, lpid + 1, GFP_KERNEL) != lpid) in __prealloc_nested()
677 if (idr_replace(&kvm->arch.kvm_nested_guest_idr, gp, lpid)) in __add_nested()
678 WARN_ON(1); in __add_nested()
683 idr_remove(&kvm->arch.kvm_nested_guest_idr, lpid); in __remove_nested()
694 gp->l1_host = kvm; in kvmhv_alloc_nested()
695 gp->l1_lpid = lpid; in kvmhv_alloc_nested()
696 mutex_init(&gp->tlb_lock); in kvmhv_alloc_nested()
697 gp->shadow_pgtable = pgd_alloc(kvm->mm); in kvmhv_alloc_nested()
698 if (!gp->shadow_pgtable) in kvmhv_alloc_nested()
703 gp->shadow_lpid = shadow_lpid; in kvmhv_alloc_nested()
704 gp->radix = 1; in kvmhv_alloc_nested()
706 memset(gp->prev_cpu, -1, sizeof(gp->prev_cpu)); in kvmhv_alloc_nested()
711 pgd_free(kvm->mm, gp->shadow_pgtable); in kvmhv_alloc_nested()
722 struct kvm *kvm = gp->l1_host; in kvmhv_release_nested()
724 if (gp->shadow_pgtable) { in kvmhv_release_nested()
728 * so we don't need to hold kvm->mmu_lock. in kvmhv_release_nested()
730 kvmppc_free_pgtable_radix(kvm, gp->shadow_pgtable, in kvmhv_release_nested()
731 gp->shadow_lpid); in kvmhv_release_nested()
732 pgd_free(kvm->mm, gp->shadow_pgtable); in kvmhv_release_nested()
734 kvmhv_set_ptbl_entry(gp->shadow_lpid, 0, 0); in kvmhv_release_nested()
735 kvmppc_free_lpid(gp->shadow_lpid); in kvmhv_release_nested()
741 struct kvm *kvm = gp->l1_host; in kvmhv_remove_nested()
742 int lpid = gp->l1_lpid; in kvmhv_remove_nested()
745 spin_lock(&kvm->mmu_lock); in kvmhv_remove_nested()
748 --gp->refcnt; in kvmhv_remove_nested()
750 ref = gp->refcnt; in kvmhv_remove_nested()
751 spin_unlock(&kvm->mmu_lock); in kvmhv_remove_nested()
770 spin_lock(&kvm->mmu_lock); in kvmhv_release_all_nested()
771 idr_for_each_entry(&kvm->arch.kvm_nested_guest_idr, gp, lpid) { in kvmhv_release_all_nested()
773 if (--gp->refcnt == 0) { in kvmhv_release_all_nested()
774 gp->next = freelist; in kvmhv_release_all_nested()
778 idr_destroy(&kvm->arch.kvm_nested_guest_idr); in kvmhv_release_all_nested()
780 spin_unlock(&kvm->mmu_lock); in kvmhv_release_all_nested()
782 freelist = gp->next; in kvmhv_release_all_nested()
786 srcu_idx = srcu_read_lock(&kvm->srcu); in kvmhv_release_all_nested()
789 srcu_read_unlock(&kvm->srcu, srcu_idx); in kvmhv_release_all_nested()
792 /* caller must hold gp->tlb_lock */
795 struct kvm *kvm = gp->l1_host; in kvmhv_flush_nested()
797 spin_lock(&kvm->mmu_lock); in kvmhv_flush_nested()
798 kvmppc_free_pgtable_radix(kvm, gp->shadow_pgtable, gp->shadow_lpid); in kvmhv_flush_nested()
799 spin_unlock(&kvm->mmu_lock); in kvmhv_flush_nested()
800 kvmhv_flush_lpid(gp->shadow_lpid); in kvmhv_flush_nested()
802 if (gp->l1_gr_to_hr == 0) in kvmhv_flush_nested()
811 if (l1_lpid >= (1ul << ((kvm->arch.l1_ptcr & PRTS_MASK) + 12 - 4))) in kvmhv_get_nested()
814 spin_lock(&kvm->mmu_lock); in kvmhv_get_nested()
817 ++gp->refcnt; in kvmhv_get_nested()
818 spin_unlock(&kvm->mmu_lock); in kvmhv_get_nested()
832 spin_lock(&kvm->mmu_lock); in kvmhv_get_nested()
836 ++newgp->refcnt; in kvmhv_get_nested()
840 ++gp->refcnt; in kvmhv_get_nested()
841 spin_unlock(&kvm->mmu_lock); in kvmhv_get_nested()
851 struct kvm *kvm = gp->l1_host; in kvmhv_put_nested()
854 spin_lock(&kvm->mmu_lock); in kvmhv_put_nested()
855 ref = --gp->refcnt; in kvmhv_put_nested()
856 spin_unlock(&kvm->mmu_lock); in kvmhv_put_nested()
871 VM_WARN(!spin_is_locked(&kvm->mmu_lock), in find_kvm_nested_guest_pte()
873 pte = __find_linux_pte(gp->shadow_pgtable, ea, NULL, hshift); in find_kvm_nested_guest_pte()
887 struct llist_node *entry = ((struct llist_head *) rmapp)->first; in kvmhv_insert_nest_rmap()
889 u64 rmap, new_rmap = (*n_rmap)->rmap; in kvmhv_insert_nest_rmap()
893 /* No -> use the rmap as a single entry */ in kvmhv_insert_nest_rmap()
908 llist_add(&((*n_rmap)->list), (struct llist_head *) rmapp); in kvmhv_insert_nest_rmap()
910 (*n_rmap)->list.next = (struct llist_node *) rmap; in kvmhv_insert_nest_rmap()
920 unsigned long gpa; in kvmhv_update_nest_rmap_rc() local
924 gpa = n_rmap & RMAP_NESTED_GPA_MASK; in kvmhv_update_nest_rmap_rc()
928 ptep = find_kvm_nested_guest_pte(kvm, lpid, gpa, &shift); in kvmhv_update_nest_rmap_rc()
932 * gpa actually points somewhere else now, and there is nothing to do. in kvmhv_update_nest_rmap_rc()
937 kvmppc_radix_tlbie_page(kvm, gpa, shift, lpid); in kvmhv_update_nest_rmap_rc()
949 struct llist_node *entry = ((struct llist_head *) rmapp)->first; in kvmhv_update_nest_rmap_rc_list()
956 mask = PTE_RPN_MASK & ~(nbytes - 1); in kvmhv_update_nest_rmap_rc_list()
967 unsigned long gpa; in kvmhv_remove_nest_rmap() local
971 gpa = n_rmap & RMAP_NESTED_GPA_MASK; in kvmhv_remove_nest_rmap()
978 ptep = find_kvm_nested_guest_pte(kvm, lpid, gpa, &shift); in kvmhv_remove_nest_rmap()
981 kvmppc_unmap_pte(kvm, ptep, gpa, shift, NULL, gp->shadow_lpid); in kvmhv_remove_nest_rmap()
997 /* called with kvm->mmu_lock held */
1000 unsigned long gpa, unsigned long hpa, in kvmhv_remove_nest_rmap_range() argument
1008 gfn = (gpa >> PAGE_SHIFT) - memslot->base_gfn; in kvmhv_remove_nest_rmap_range()
1011 addr_mask = PTE_RPN_MASK & ~(nbytes - 1); in kvmhv_remove_nest_rmap_range()
1015 unsigned long *rmap = &memslot->arch.rmap[gfn]; in kvmhv_remove_nest_rmap_range()
1024 for (page = 0; page < free->npages; page++) { in kvmhv_free_memslot_nest_rmap()
1025 unsigned long rmap, *rmapp = &free->arch.rmap[page]; in kvmhv_free_memslot_nest_rmap()
1037 long gpa, int *shift_ret) in kvmhv_invalidate_shadow_pte() argument
1039 struct kvm *kvm = vcpu->kvm; in kvmhv_invalidate_shadow_pte()
1044 spin_lock(&kvm->mmu_lock); in kvmhv_invalidate_shadow_pte()
1045 ptep = find_kvm_nested_guest_pte(kvm, gp->l1_lpid, gpa, &shift); in kvmhv_invalidate_shadow_pte()
1049 kvmppc_unmap_pte(kvm, ptep, gpa, shift, NULL, gp->shadow_lpid); in kvmhv_invalidate_shadow_pte()
1052 spin_unlock(&kvm->mmu_lock); in kvmhv_invalidate_shadow_pte()
1097 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_tlbie_tlb_addr()
1107 return -EINVAL; in kvmhv_emulate_tlbie_tlb_addr()
1109 addr &= ~((1UL << shift) - 1); in kvmhv_emulate_tlbie_tlb_addr()
1110 npages = 1UL << (shift - PAGE_SHIFT); in kvmhv_emulate_tlbie_tlb_addr()
1113 if (!gp) /* No such guest -> nothing to do */ in kvmhv_emulate_tlbie_tlb_addr()
1115 mutex_lock(&gp->tlb_lock); in kvmhv_emulate_tlbie_tlb_addr()
1121 npages -= 1UL << (shadow_shift - PAGE_SHIFT); in kvmhv_emulate_tlbie_tlb_addr()
1122 addr += 1UL << shadow_shift; in kvmhv_emulate_tlbie_tlb_addr()
1125 mutex_unlock(&gp->tlb_lock); in kvmhv_emulate_tlbie_tlb_addr()
1133 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_tlbie_lpid()
1135 mutex_lock(&gp->tlb_lock); in kvmhv_emulate_tlbie_lpid()
1139 spin_lock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_lpid()
1140 kvmppc_free_pgtable_radix(kvm, gp->shadow_pgtable, in kvmhv_emulate_tlbie_lpid()
1141 gp->shadow_lpid); in kvmhv_emulate_tlbie_lpid()
1142 kvmhv_flush_lpid(gp->shadow_lpid); in kvmhv_emulate_tlbie_lpid()
1143 spin_unlock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_lpid()
1145 case 1: in kvmhv_emulate_tlbie_lpid()
1148 * We don't cache this -> nothing to do in kvmhv_emulate_tlbie_lpid()
1158 mutex_unlock(&gp->tlb_lock); in kvmhv_emulate_tlbie_lpid()
1163 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_tlbie_all_lpid()
1167 spin_lock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1168 idr_for_each_entry(&kvm->arch.kvm_nested_guest_idr, gp, lpid) { in kvmhv_emulate_tlbie_all_lpid()
1169 spin_unlock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1171 spin_lock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1173 spin_unlock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1179 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_priv_tlbie()
1194 * r != 1 -> Only radix supported in kvmhv_emulate_priv_tlbie()
1195 * prs == 1 -> Not HV privileged in kvmhv_emulate_priv_tlbie()
1196 * ric == 3 -> No cluster bombs for radix in kvmhv_emulate_priv_tlbie()
1197 * is == 1 -> Partition scoped translations not associated with pid in kvmhv_emulate_priv_tlbie()
1198 * (!is) && (ric == 1 || ric == 2) -> Not supported by ISA in kvmhv_emulate_priv_tlbie()
1200 if ((!r) || (prs) || (ric == 3) || (is == 1) || in kvmhv_emulate_priv_tlbie()
1201 ((!is) && (ric == 1 || ric == 2))) in kvmhv_emulate_priv_tlbie()
1202 return -EINVAL; in kvmhv_emulate_priv_tlbie()
1227 ret = -EINVAL; in kvmhv_emulate_priv_tlbie()
1253 struct kvm *kvm = vcpu->kvm; in do_tlb_invalidate_nested_all()
1284 if (!(pg_sizes & def->h_rpt_pgsize)) in do_tlb_invalidate_nested_tlb()
1287 nr_pages = (end - start) >> def->shift; in do_tlb_invalidate_nested_tlb()
1294 page_size = 1UL << def->shift; in do_tlb_invalidate_nested_tlb()
1307 * Performs partition-scoped invalidations for nested guests
1323 if (!__find_nested(vcpu->kvm, lpid)) in do_h_rpt_invalidate_pat()
1348 if (start == 0 && end == -1) in do_h_rpt_invalidate_pat()
1366 ret = kvmppc_mmu_walk_radix_tree(vcpu, n_gpa, gpte_p, gp->l1_gr_to_hr, in kvmhv_translate_addr_nested()
1371 if (ret == -EINVAL) { in kvmhv_translate_addr_nested()
1374 } else if (ret == -ENOENT) { in kvmhv_translate_addr_nested()
1377 } else if (ret == -EFAULT) { in kvmhv_translate_addr_nested()
1380 vcpu->arch.fault_gpa = fault_addr; in kvmhv_translate_addr_nested()
1387 /* We found a pte -> check permissions */ in kvmhv_translate_addr_nested()
1390 if (!gpte_p->may_write) { in kvmhv_translate_addr_nested()
1394 } else if (vcpu->arch.trap == BOOK3S_INTERRUPT_H_INST_STORAGE) { in kvmhv_translate_addr_nested()
1396 if (!gpte_p->may_execute) { in kvmhv_translate_addr_nested()
1402 if (!gpte_p->may_read && !gpte_p->may_write) { in kvmhv_translate_addr_nested()
1412 vcpu->arch.fault_dsisr = flags; in kvmhv_translate_addr_nested()
1413 if (vcpu->arch.trap == BOOK3S_INTERRUPT_H_INST_STORAGE) { in kvmhv_translate_addr_nested()
1414 vcpu->arch.shregs.msr &= SRR1_MSR_BITS; in kvmhv_translate_addr_nested()
1415 vcpu->arch.shregs.msr |= flags; in kvmhv_translate_addr_nested()
1426 struct kvm *kvm = vcpu->kvm; in kvmhv_handle_nested_set_rc()
1438 spin_lock(&kvm->mmu_lock); in kvmhv_handle_nested_set_rc()
1441 gpte.raddr, kvm->arch.lpid); in kvmhv_handle_nested_set_rc()
1443 ret = -EINVAL; in kvmhv_handle_nested_set_rc()
1449 n_gpa, gp->l1_lpid); in kvmhv_handle_nested_set_rc()
1451 ret = -EINVAL; in kvmhv_handle_nested_set_rc()
1456 spin_unlock(&kvm->mmu_lock); in kvmhv_handle_nested_set_rc()
1465 case 1: in kvmppc_radix_level_to_shift()
1477 return 1; in kvmppc_radix_shift_to_level()
1480 WARN_ON_ONCE(1); in kvmppc_radix_shift_to_level()
1484 /* called with gp->tlb_lock held */
1488 struct kvm *kvm = vcpu->kvm; in __kvmhv_nested_page_fault()
1494 unsigned long dsisr = vcpu->arch.fault_dsisr; in __kvmhv_nested_page_fault()
1495 unsigned long ea = vcpu->arch.fault_dar; in __kvmhv_nested_page_fault()
1497 unsigned long n_gpa, gpa, gfn, perm = 0UL; in __kvmhv_nested_page_fault() local
1503 if (!gp->l1_gr_to_hr) { in __kvmhv_nested_page_fault()
1505 if (!gp->l1_gr_to_hr) in __kvmhv_nested_page_fault()
1511 n_gpa = vcpu->arch.fault_gpa & ~0xF000000000000FFFULL; in __kvmhv_nested_page_fault()
1518 * translation in the l1 partition-scoped tree, remove the shadow pte in __kvmhv_nested_page_fault()
1552 return -EINVAL; in __kvmhv_nested_page_fault()
1554 gpa = gpte.raddr; in __kvmhv_nested_page_fault()
1555 gfn = gpa >> PAGE_SHIFT; in __kvmhv_nested_page_fault()
1557 /* 1. Get the corresponding host memslot */ in __kvmhv_nested_page_fault()
1560 if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID)) { in __kvmhv_nested_page_fault()
1562 /* unusual error -> reflect to the guest as a DSI */ in __kvmhv_nested_page_fault()
1568 return kvmppc_hv_emulate_mmio(vcpu, gpa, ea, writing); in __kvmhv_nested_page_fault()
1570 if (memslot->flags & KVM_MEM_READONLY) { in __kvmhv_nested_page_fault()
1583 mmu_seq = kvm->mmu_invalidate_seq; in __kvmhv_nested_page_fault()
1588 spin_lock(&kvm->mmu_lock); in __kvmhv_nested_page_fault()
1589 pte_p = find_kvm_secondary_pte(kvm, gpa, &shift); in __kvmhv_nested_page_fault()
1594 spin_unlock(&kvm->mmu_lock); in __kvmhv_nested_page_fault()
1597 /* No suitable pte found -> try to insert a mapping */ in __kvmhv_nested_page_fault()
1598 ret = kvmppc_book3s_instantiate_page(vcpu, gpa, memslot, in __kvmhv_nested_page_fault()
1600 if (ret == -EAGAIN) in __kvmhv_nested_page_fault()
1607 gfn = (gpa & ~((1UL << shift) - 1)) >> PAGE_SHIFT; in __kvmhv_nested_page_fault()
1609 /* 3. Compute the pte we need to insert for nest_gpa -> host r_addr */ in __kvmhv_nested_page_fault()
1626 mask = (1UL << shift) - (1UL << actual_shift); in __kvmhv_nested_page_fault()
1627 pte = __pte(pte_val(pte) | (gpa & mask)); in __kvmhv_nested_page_fault()
1631 n_gpa &= ~((1UL << shift) - 1); in __kvmhv_nested_page_fault()
1638 n_rmap->rmap = (n_gpa & RMAP_NESTED_GPA_MASK) | in __kvmhv_nested_page_fault()
1639 (((unsigned long) gp->l1_lpid) << RMAP_NESTED_LPID_SHIFT); in __kvmhv_nested_page_fault()
1640 rmapp = &memslot->arch.rmap[gfn - memslot->base_gfn]; in __kvmhv_nested_page_fault()
1641 ret = kvmppc_create_pte(kvm, gp->shadow_pgtable, pte, n_gpa, level, in __kvmhv_nested_page_fault()
1642 mmu_seq, gp->shadow_lpid, rmapp, &n_rmap); in __kvmhv_nested_page_fault()
1644 if (ret == -EAGAIN) in __kvmhv_nested_page_fault()
1656 struct kvm_nested_guest *gp = vcpu->arch.nested; in kvmhv_nested_page_fault()
1659 mutex_lock(&gp->tlb_lock); in kvmhv_nested_page_fault()
1661 mutex_unlock(&gp->tlb_lock); in kvmhv_nested_page_fault()
1667 int ret = lpid + 1; in kvmhv_nested_next_lpid()
1669 spin_lock(&kvm->mmu_lock); in kvmhv_nested_next_lpid()
1670 if (!idr_get_next(&kvm->arch.kvm_nested_guest_idr, &ret)) in kvmhv_nested_next_lpid()
1671 ret = -1; in kvmhv_nested_next_lpid()
1672 spin_unlock(&kvm->mmu_lock); in kvmhv_nested_next_lpid()