Lines Matching +full:- +full:gp
1 // SPDX-License-Identifier: GPL-2.0
7 * Description: KVM functions specific to running nested KVM-HV guests
20 #include <asm/pte-walk.h>
27 static void kvmhv_update_ptbl_cache(struct kvm_nested_guest *gp);
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 = vcpu->arch.doorbell_request; 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()
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 = vcpu->arch.doorbell_request; 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 vcpu->arch.doorbell_request = 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()
177 * b) Doorbell was not handled and L2 exited for some other reason (hr->dpdes would be 1) in kvmhv_restore_hv_return_state()
179 vcpu->arch.doorbell_request = vcpu->arch.doorbell_request | hr->dpdes; in kvmhv_restore_hv_return_state()
180 vcpu->arch.hfscr = hr->hfscr; in kvmhv_restore_hv_return_state()
181 vcpu->arch.purr = hr->purr; in kvmhv_restore_hv_return_state()
182 vcpu->arch.spurr = hr->spurr; in kvmhv_restore_hv_return_state()
183 vcpu->arch.ic = hr->ic; in kvmhv_restore_hv_return_state()
184 vc->vtb = hr->vtb; in kvmhv_restore_hv_return_state()
185 vcpu->arch.fault_dar = hr->hdar; in kvmhv_restore_hv_return_state()
186 vcpu->arch.fault_dsisr = hr->hdsisr; in kvmhv_restore_hv_return_state()
187 vcpu->arch.fault_gpa = hr->asdr; in kvmhv_restore_hv_return_state()
188 vcpu->arch.emul_inst = hr->heir; in kvmhv_restore_hv_return_state()
189 vcpu->arch.shregs.srr0 = hr->srr0; in kvmhv_restore_hv_return_state()
190 vcpu->arch.shregs.srr1 = hr->srr1; in kvmhv_restore_hv_return_state()
191 vcpu->arch.shregs.sprg0 = hr->sprg[0]; in kvmhv_restore_hv_return_state()
192 vcpu->arch.shregs.sprg1 = hr->sprg[1]; in kvmhv_restore_hv_return_state()
193 vcpu->arch.shregs.sprg2 = hr->sprg[2]; in kvmhv_restore_hv_return_state()
194 vcpu->arch.shregs.sprg3 = hr->sprg[3]; in kvmhv_restore_hv_return_state()
195 vcpu->arch.pid = hr->pidr; in kvmhv_restore_hv_return_state()
196 vcpu->arch.cfar = hr->cfar; in kvmhv_restore_hv_return_state()
197 vcpu->arch.ppr = hr->ppr; in kvmhv_restore_hv_return_state()
203 vcpu->arch.trap = 0; in kvmhv_nested_mmio_needed()
211 if (((vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) == KVM_MMIO_REG_GPR) in kvmhv_nested_mmio_needed()
212 && (vcpu->mmio_is_write == 0)) { in kvmhv_nested_mmio_needed()
213 vcpu->arch.nested_io_gpr = (gpa_t) regs_ptr + in kvmhv_nested_mmio_needed()
215 gpr[vcpu->arch.io_gpr]); in kvmhv_nested_mmio_needed()
216 vcpu->arch.io_gpr = KVM_MMIO_REG_NESTED_GPR; in kvmhv_nested_mmio_needed()
227 if (kvm_vcpu_read_guest(vcpu, hv_ptr, &l2_hv->version, in kvmhv_read_guest_state_and_regs()
228 sizeof(l2_hv->version))) in kvmhv_read_guest_state_and_regs()
229 return -1; in kvmhv_read_guest_state_and_regs()
232 l2_hv->version = swab64(l2_hv->version); in kvmhv_read_guest_state_and_regs()
234 size = hv_guest_state_size(l2_hv->version); in kvmhv_read_guest_state_and_regs()
236 return -1; in kvmhv_read_guest_state_and_regs()
250 size = hv_guest_state_size(l2_hv->version); in kvmhv_write_guest_state_and_regs()
252 return -1; in kvmhv_write_guest_state_and_regs()
263 struct kvmppc_vcore *vc = vcpu->arch.vcore; in load_l2_hv_regs()
277 *lpcr = kvmppc_filter_lpcr_hv(vcpu->kvm, in load_l2_hv_regs()
278 (vc->lpcr & ~mask) | (*lpcr & mask)); in load_l2_hv_regs()
284 vcpu->arch.hfscr = l2_hv->hfscr & (HFSCR_INTR_CAUSE | vcpu->arch.hfscr_permitted); in load_l2_hv_regs()
287 vcpu->arch.dawrx0 = l2_hv->dawrx0 & ~DAWRX_HYP; in load_l2_hv_regs()
288 vcpu->arch.dawrx1 = l2_hv->dawrx1 & ~DAWRX_HYP; in load_l2_hv_regs()
291 if ((l2_hv->ciabr & CIABR_PRIV) == CIABR_PRIV_HYPER) in load_l2_hv_regs()
292 vcpu->arch.ciabr = l2_hv->ciabr & ~CIABR_PRIV; in load_l2_hv_regs()
301 struct kvmppc_vcore *vc = vcpu->arch.vcore; in kvmhv_enter_nested_guest()
306 if (vcpu->kvm->arch.l1_ptcr == 0) in kvmhv_enter_nested_guest()
309 if (MSR_TM_TRANSACTIONAL(vcpu->arch.shregs.msr)) in kvmhv_enter_nested_guest()
339 if (MSR_TM_SUSPENDED(vcpu->arch.shregs.msr)) { in kvmhv_enter_nested_guest()
345 if (WARN_ON_ONCE(vcpu->arch.shregs.msr & MSR_TS_MASK)) in kvmhv_enter_nested_guest()
350 l2 = kvmhv_get_nested(vcpu->kvm, l2_hv.lpid, true); in kvmhv_enter_nested_guest()
353 if (!l2->l1_gr_to_hr) { in kvmhv_enter_nested_guest()
354 mutex_lock(&l2->tlb_lock); in kvmhv_enter_nested_guest()
356 mutex_unlock(&l2->tlb_lock); in kvmhv_enter_nested_guest()
360 vcpu->arch.regs.msr = vcpu->arch.shregs.msr; in kvmhv_enter_nested_guest()
361 saved_l1_regs = vcpu->arch.regs; in kvmhv_enter_nested_guest()
365 hdec_exp = l2_hv.hdec_expiry - vc->tb_offset; in kvmhv_enter_nested_guest()
366 vc->tb_offset += l2_hv.tb_offset; in kvmhv_enter_nested_guest()
367 vcpu->arch.dec_expires += l2_hv.tb_offset; in kvmhv_enter_nested_guest()
370 vcpu->arch.nested = l2; in kvmhv_enter_nested_guest()
371 vcpu->arch.nested_vcpu_id = l2_hv.vcpu_token; in kvmhv_enter_nested_guest()
372 vcpu->arch.nested_hfscr = l2_hv.hfscr; in kvmhv_enter_nested_guest()
373 vcpu->arch.regs = l2_regs; in kvmhv_enter_nested_guest()
376 vcpu->arch.shregs.msr = (vcpu->arch.regs.msr | MSR_ME) & ~MSR_HV; in kvmhv_enter_nested_guest()
381 vcpu->arch.ret = RESUME_GUEST; in kvmhv_enter_nested_guest()
382 vcpu->arch.trap = 0; in kvmhv_enter_nested_guest()
388 l2_regs = vcpu->arch.regs; in kvmhv_enter_nested_guest()
389 l2_regs.msr = vcpu->arch.shregs.msr; in kvmhv_enter_nested_guest()
390 delta_purr = vcpu->arch.purr - l2_hv.purr; in kvmhv_enter_nested_guest()
391 delta_spurr = vcpu->arch.spurr - l2_hv.spurr; in kvmhv_enter_nested_guest()
392 delta_ic = vcpu->arch.ic - l2_hv.ic; in kvmhv_enter_nested_guest()
393 delta_vtb = vc->vtb - l2_hv.vtb; in kvmhv_enter_nested_guest()
397 vcpu->arch.nested = NULL; in kvmhv_enter_nested_guest()
398 vcpu->arch.regs = saved_l1_regs; in kvmhv_enter_nested_guest()
399 vcpu->arch.shregs.msr = saved_l1_regs.msr & ~MSR_TS_MASK; in kvmhv_enter_nested_guest()
402 vcpu->arch.shregs.msr |= MSR_TS_S; in kvmhv_enter_nested_guest()
403 vc->tb_offset = saved_l1_hv.tb_offset; in kvmhv_enter_nested_guest()
405 vcpu->arch.dec_expires -= l2_hv.tb_offset; in kvmhv_enter_nested_guest()
407 vcpu->arch.purr += delta_purr; in kvmhv_enter_nested_guest()
408 vcpu->arch.spurr += delta_spurr; in kvmhv_enter_nested_guest()
409 vcpu->arch.ic += delta_ic; in kvmhv_enter_nested_guest()
410 vc->vtb += delta_vtb; in kvmhv_enter_nested_guest()
426 if (r == -EINTR) in kvmhv_enter_nested_guest()
429 if (vcpu->mmio_needed) { in kvmhv_enter_nested_guest()
434 return vcpu->arch.trap; in kvmhv_enter_nested_guest()
448 return -ENODEV; in kvmhv_nested_init()
464 pr_err("kvm-hv: Could not configure parent hypervisor capabilities (rc=%ld)", in kvmhv_nested_init()
466 return -ENODEV; in kvmhv_nested_init()
473 pr_info("kvm-hv: nestedv2 get capabilities hcall failed, falling back to nestedv1 (rc=%ld)\n", in kvmhv_nested_init()
483 pr_err("kvm-hv: failed to allocated nested partition table\n"); in kvmhv_nested_init()
484 return -ENOMEM; in kvmhv_nested_init()
487 ptcr = __pa(pseries_partition_tb) | (ptb_order - 12); in kvmhv_nested_init()
490 pr_err("kvm-hv: Parent hypervisor does not support nesting (rc=%ld)\n", in kvmhv_nested_init()
494 return -ENODEV; in kvmhv_nested_init()
531 H_RPTI_PAGE_ALL, 0, -1UL); in kvmhv_flush_lpid()
554 static void kvmhv_set_nested_ptbl(struct kvm_nested_guest *gp) in kvmhv_set_nested_ptbl() argument
559 __pa(gp->shadow_pgtable) | RADIX_PGD_INDEX_SIZE; in kvmhv_set_nested_ptbl()
560 kvmhv_set_ptbl_entry(gp->shadow_lpid, dw0, gp->process_table); in kvmhv_set_nested_ptbl()
565 * r4 = guest real address of partition table + log_2(size) - 12
570 struct kvm *kvm = vcpu->kvm; in kvmhv_set_partition_table()
575 srcu_idx = srcu_read_lock(&kvm->srcu); in kvmhv_set_partition_table()
577 if ((ptcr & PRTS_MASK) + 12 - 4 > KVM_MAX_NESTED_GUESTS_SHIFT || in kvmhv_set_partition_table()
578 !kvm_is_visible_gfn(vcpu->kvm, (ptcr & PRTB_MASK) >> PAGE_SHIFT)) in kvmhv_set_partition_table()
580 srcu_read_unlock(&kvm->srcu, srcu_idx); in kvmhv_set_partition_table()
582 kvm->arch.l1_ptcr = ptcr; in kvmhv_set_partition_table()
598 struct kvm_nested_guest *gp; in kvmhv_copy_tofrom_guest_nested() local
619 gp = kvmhv_get_nested(vcpu->kvm, l1_lpid, false); in kvmhv_copy_tofrom_guest_nested()
620 if (!gp) { in kvmhv_copy_tofrom_guest_nested()
625 mutex_lock(&gp->tlb_lock); in kvmhv_copy_tofrom_guest_nested()
629 rc = __kvmhv_copy_tofrom_guest_radix(gp->shadow_lpid, pid, in kvmhv_copy_tofrom_guest_nested()
649 rc = __kvmhv_copy_tofrom_guest_radix(gp->shadow_lpid, pid, in kvmhv_copy_tofrom_guest_nested()
656 mutex_unlock(&gp->tlb_lock); in kvmhv_copy_tofrom_guest_nested()
657 kvmhv_put_nested(gp); in kvmhv_copy_tofrom_guest_nested()
668 * Caller must hold gp->tlb_lock.
670 static void kvmhv_update_ptbl_cache(struct kvm_nested_guest *gp) in kvmhv_update_ptbl_cache() argument
675 struct kvm *kvm = gp->l1_host; in kvmhv_update_ptbl_cache()
677 ret = -EFAULT; in kvmhv_update_ptbl_cache()
678 ptbl_addr = (kvm->arch.l1_ptcr & PRTB_MASK) + (gp->l1_lpid << 4); in kvmhv_update_ptbl_cache()
679 if (gp->l1_lpid < (1ul << ((kvm->arch.l1_ptcr & PRTS_MASK) + 12 - 4))) { in kvmhv_update_ptbl_cache()
680 int srcu_idx = srcu_read_lock(&kvm->srcu); in kvmhv_update_ptbl_cache()
683 srcu_read_unlock(&kvm->srcu, srcu_idx); in kvmhv_update_ptbl_cache()
686 gp->l1_gr_to_hr = 0; in kvmhv_update_ptbl_cache()
687 gp->process_table = 0; in kvmhv_update_ptbl_cache()
689 gp->l1_gr_to_hr = be64_to_cpu(ptbl_entry.patb0); in kvmhv_update_ptbl_cache()
690 gp->process_table = be64_to_cpu(ptbl_entry.patb1); in kvmhv_update_ptbl_cache()
692 kvmhv_set_nested_ptbl(gp); in kvmhv_update_ptbl_cache()
697 idr_init(&kvm->arch.kvm_nested_guest_idr); in kvmhv_vm_nested_init()
702 return idr_find(&kvm->arch.kvm_nested_guest_idr, lpid); in __find_nested()
707 if (idr_alloc(&kvm->arch.kvm_nested_guest_idr, in __prealloc_nested()
713 static void __add_nested(struct kvm *kvm, int lpid, struct kvm_nested_guest *gp) in __add_nested() argument
715 if (idr_replace(&kvm->arch.kvm_nested_guest_idr, gp, lpid)) in __add_nested()
721 idr_remove(&kvm->arch.kvm_nested_guest_idr, lpid); in __remove_nested()
726 struct kvm_nested_guest *gp; in kvmhv_alloc_nested() local
729 gp = kzalloc(sizeof(*gp), GFP_KERNEL); in kvmhv_alloc_nested()
730 if (!gp) in kvmhv_alloc_nested()
732 gp->l1_host = kvm; in kvmhv_alloc_nested()
733 gp->l1_lpid = lpid; in kvmhv_alloc_nested()
734 mutex_init(&gp->tlb_lock); in kvmhv_alloc_nested()
735 gp->shadow_pgtable = pgd_alloc(kvm->mm); in kvmhv_alloc_nested()
736 if (!gp->shadow_pgtable) in kvmhv_alloc_nested()
741 gp->shadow_lpid = shadow_lpid; in kvmhv_alloc_nested()
742 gp->radix = 1; in kvmhv_alloc_nested()
744 memset(gp->prev_cpu, -1, sizeof(gp->prev_cpu)); in kvmhv_alloc_nested()
746 return gp; in kvmhv_alloc_nested()
749 pgd_free(kvm->mm, gp->shadow_pgtable); in kvmhv_alloc_nested()
751 kfree(gp); in kvmhv_alloc_nested()
758 static void kvmhv_release_nested(struct kvm_nested_guest *gp) in kvmhv_release_nested() argument
760 struct kvm *kvm = gp->l1_host; in kvmhv_release_nested()
762 if (gp->shadow_pgtable) { in kvmhv_release_nested()
766 * so we don't need to hold kvm->mmu_lock. in kvmhv_release_nested()
768 kvmppc_free_pgtable_radix(kvm, gp->shadow_pgtable, in kvmhv_release_nested()
769 gp->shadow_lpid); in kvmhv_release_nested()
770 pgd_free(kvm->mm, gp->shadow_pgtable); in kvmhv_release_nested()
772 kvmhv_set_ptbl_entry(gp->shadow_lpid, 0, 0); in kvmhv_release_nested()
773 kvmppc_free_lpid(gp->shadow_lpid); in kvmhv_release_nested()
774 kfree(gp); in kvmhv_release_nested()
777 static void kvmhv_remove_nested(struct kvm_nested_guest *gp) in kvmhv_remove_nested() argument
779 struct kvm *kvm = gp->l1_host; in kvmhv_remove_nested()
780 int lpid = gp->l1_lpid; in kvmhv_remove_nested()
783 spin_lock(&kvm->mmu_lock); in kvmhv_remove_nested()
784 if (gp == __find_nested(kvm, lpid)) { in kvmhv_remove_nested()
786 --gp->refcnt; in kvmhv_remove_nested()
788 ref = gp->refcnt; in kvmhv_remove_nested()
789 spin_unlock(&kvm->mmu_lock); in kvmhv_remove_nested()
791 kvmhv_release_nested(gp); in kvmhv_remove_nested()
803 struct kvm_nested_guest *gp; in kvmhv_release_all_nested() local
808 spin_lock(&kvm->mmu_lock); in kvmhv_release_all_nested()
809 idr_for_each_entry(&kvm->arch.kvm_nested_guest_idr, gp, lpid) { in kvmhv_release_all_nested()
811 if (--gp->refcnt == 0) { in kvmhv_release_all_nested()
812 gp->next = freelist; in kvmhv_release_all_nested()
813 freelist = gp; in kvmhv_release_all_nested()
816 idr_destroy(&kvm->arch.kvm_nested_guest_idr); in kvmhv_release_all_nested()
818 spin_unlock(&kvm->mmu_lock); in kvmhv_release_all_nested()
819 while ((gp = freelist) != NULL) { in kvmhv_release_all_nested()
820 freelist = gp->next; in kvmhv_release_all_nested()
821 kvmhv_release_nested(gp); in kvmhv_release_all_nested()
824 srcu_idx = srcu_read_lock(&kvm->srcu); in kvmhv_release_all_nested()
827 srcu_read_unlock(&kvm->srcu, srcu_idx); in kvmhv_release_all_nested()
830 /* caller must hold gp->tlb_lock */
831 static void kvmhv_flush_nested(struct kvm_nested_guest *gp) in kvmhv_flush_nested() argument
833 struct kvm *kvm = gp->l1_host; in kvmhv_flush_nested()
835 spin_lock(&kvm->mmu_lock); in kvmhv_flush_nested()
836 kvmppc_free_pgtable_radix(kvm, gp->shadow_pgtable, gp->shadow_lpid); in kvmhv_flush_nested()
837 spin_unlock(&kvm->mmu_lock); in kvmhv_flush_nested()
838 kvmhv_flush_lpid(gp->shadow_lpid); in kvmhv_flush_nested()
839 kvmhv_update_ptbl_cache(gp); in kvmhv_flush_nested()
840 if (gp->l1_gr_to_hr == 0) in kvmhv_flush_nested()
841 kvmhv_remove_nested(gp); in kvmhv_flush_nested()
847 struct kvm_nested_guest *gp, *newgp; in kvmhv_get_nested() local
849 if (l1_lpid >= (1ul << ((kvm->arch.l1_ptcr & PRTS_MASK) + 12 - 4))) in kvmhv_get_nested()
852 spin_lock(&kvm->mmu_lock); in kvmhv_get_nested()
853 gp = __find_nested(kvm, l1_lpid); in kvmhv_get_nested()
854 if (gp) in kvmhv_get_nested()
855 ++gp->refcnt; in kvmhv_get_nested()
856 spin_unlock(&kvm->mmu_lock); in kvmhv_get_nested()
858 if (gp || !create) in kvmhv_get_nested()
859 return gp; in kvmhv_get_nested()
870 spin_lock(&kvm->mmu_lock); in kvmhv_get_nested()
871 gp = __find_nested(kvm, l1_lpid); in kvmhv_get_nested()
872 if (!gp) { in kvmhv_get_nested()
874 ++newgp->refcnt; in kvmhv_get_nested()
875 gp = newgp; in kvmhv_get_nested()
878 ++gp->refcnt; in kvmhv_get_nested()
879 spin_unlock(&kvm->mmu_lock); in kvmhv_get_nested()
884 return gp; in kvmhv_get_nested()
887 void kvmhv_put_nested(struct kvm_nested_guest *gp) in kvmhv_put_nested() argument
889 struct kvm *kvm = gp->l1_host; in kvmhv_put_nested()
892 spin_lock(&kvm->mmu_lock); in kvmhv_put_nested()
893 ref = --gp->refcnt; in kvmhv_put_nested()
894 spin_unlock(&kvm->mmu_lock); in kvmhv_put_nested()
896 kvmhv_release_nested(gp); in kvmhv_put_nested()
902 struct kvm_nested_guest *gp; in find_kvm_nested_guest_pte() local
905 gp = __find_nested(kvm, lpid); in find_kvm_nested_guest_pte()
906 if (!gp) in find_kvm_nested_guest_pte()
909 VM_WARN(!spin_is_locked(&kvm->mmu_lock), in find_kvm_nested_guest_pte()
911 pte = __find_linux_pte(gp->shadow_pgtable, ea, NULL, hshift); in find_kvm_nested_guest_pte()
925 struct llist_node *entry = ((struct llist_head *) rmapp)->first; in kvmhv_insert_nest_rmap()
927 u64 rmap, new_rmap = (*n_rmap)->rmap; in kvmhv_insert_nest_rmap()
931 /* No -> use the rmap as a single entry */ in kvmhv_insert_nest_rmap()
946 llist_add(&((*n_rmap)->list), (struct llist_head *) rmapp); in kvmhv_insert_nest_rmap()
948 (*n_rmap)->list.next = (struct llist_node *) rmap; in kvmhv_insert_nest_rmap()
987 struct llist_node *entry = ((struct llist_head *) rmapp)->first; in kvmhv_update_nest_rmap_rc_list()
994 mask = PTE_RPN_MASK & ~(nbytes - 1); in kvmhv_update_nest_rmap_rc_list()
1004 struct kvm_nested_guest *gp; in kvmhv_remove_nest_rmap() local
1011 gp = __find_nested(kvm, lpid); in kvmhv_remove_nest_rmap()
1012 if (!gp) in kvmhv_remove_nest_rmap()
1019 kvmppc_unmap_pte(kvm, ptep, gpa, shift, NULL, gp->shadow_lpid); in kvmhv_remove_nest_rmap()
1035 /* called with kvm->mmu_lock held */
1046 gfn = (gpa >> PAGE_SHIFT) - memslot->base_gfn; in kvmhv_remove_nest_rmap_range()
1049 addr_mask = PTE_RPN_MASK & ~(nbytes - 1); in kvmhv_remove_nest_rmap_range()
1053 unsigned long *rmap = &memslot->arch.rmap[gfn]; in kvmhv_remove_nest_rmap_range()
1062 for (page = 0; page < free->npages; page++) { in kvmhv_free_memslot_nest_rmap()
1063 unsigned long rmap, *rmapp = &free->arch.rmap[page]; in kvmhv_free_memslot_nest_rmap()
1074 struct kvm_nested_guest *gp, in kvmhv_invalidate_shadow_pte() argument
1077 struct kvm *kvm = vcpu->kvm; in kvmhv_invalidate_shadow_pte()
1082 spin_lock(&kvm->mmu_lock); in kvmhv_invalidate_shadow_pte()
1083 ptep = find_kvm_nested_guest_pte(kvm, gp->l1_lpid, gpa, &shift); in kvmhv_invalidate_shadow_pte()
1087 kvmppc_unmap_pte(kvm, ptep, gpa, shift, NULL, gp->shadow_lpid); in kvmhv_invalidate_shadow_pte()
1090 spin_unlock(&kvm->mmu_lock); in kvmhv_invalidate_shadow_pte()
1135 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_tlbie_tlb_addr()
1136 struct kvm_nested_guest *gp; in kvmhv_emulate_tlbie_tlb_addr() local
1145 return -EINVAL; in kvmhv_emulate_tlbie_tlb_addr()
1147 addr &= ~((1UL << shift) - 1); in kvmhv_emulate_tlbie_tlb_addr()
1148 npages = 1UL << (shift - PAGE_SHIFT); in kvmhv_emulate_tlbie_tlb_addr()
1150 gp = kvmhv_get_nested(kvm, lpid, false); in kvmhv_emulate_tlbie_tlb_addr()
1151 if (!gp) /* No such guest -> nothing to do */ in kvmhv_emulate_tlbie_tlb_addr()
1153 mutex_lock(&gp->tlb_lock); in kvmhv_emulate_tlbie_tlb_addr()
1157 kvmhv_invalidate_shadow_pte(vcpu, gp, addr, &shadow_shift); in kvmhv_emulate_tlbie_tlb_addr()
1159 npages -= 1UL << (shadow_shift - PAGE_SHIFT); in kvmhv_emulate_tlbie_tlb_addr()
1163 mutex_unlock(&gp->tlb_lock); in kvmhv_emulate_tlbie_tlb_addr()
1164 kvmhv_put_nested(gp); in kvmhv_emulate_tlbie_tlb_addr()
1169 struct kvm_nested_guest *gp, int ric) in kvmhv_emulate_tlbie_lpid() argument
1171 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_tlbie_lpid()
1173 mutex_lock(&gp->tlb_lock); in kvmhv_emulate_tlbie_lpid()
1177 spin_lock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_lpid()
1178 kvmppc_free_pgtable_radix(kvm, gp->shadow_pgtable, in kvmhv_emulate_tlbie_lpid()
1179 gp->shadow_lpid); in kvmhv_emulate_tlbie_lpid()
1180 kvmhv_flush_lpid(gp->shadow_lpid); in kvmhv_emulate_tlbie_lpid()
1181 spin_unlock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_lpid()
1186 * We don't cache this -> nothing to do in kvmhv_emulate_tlbie_lpid()
1191 kvmhv_flush_nested(gp); in kvmhv_emulate_tlbie_lpid()
1196 mutex_unlock(&gp->tlb_lock); in kvmhv_emulate_tlbie_lpid()
1201 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_tlbie_all_lpid()
1202 struct kvm_nested_guest *gp; in kvmhv_emulate_tlbie_all_lpid() local
1205 spin_lock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1206 idr_for_each_entry(&kvm->arch.kvm_nested_guest_idr, gp, lpid) { in kvmhv_emulate_tlbie_all_lpid()
1207 spin_unlock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1208 kvmhv_emulate_tlbie_lpid(vcpu, gp, ric); in kvmhv_emulate_tlbie_all_lpid()
1209 spin_lock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1211 spin_unlock(&kvm->mmu_lock); in kvmhv_emulate_tlbie_all_lpid()
1217 struct kvm *kvm = vcpu->kvm; in kvmhv_emulate_priv_tlbie()
1218 struct kvm_nested_guest *gp; in kvmhv_emulate_priv_tlbie() local
1232 * r != 1 -> Only radix supported in kvmhv_emulate_priv_tlbie()
1233 * prs == 1 -> Not HV privileged in kvmhv_emulate_priv_tlbie()
1234 * ric == 3 -> No cluster bombs for radix in kvmhv_emulate_priv_tlbie()
1235 * is == 1 -> Partition scoped translations not associated with pid in kvmhv_emulate_priv_tlbie()
1236 * (!is) && (ric == 1 || ric == 2) -> Not supported by ISA in kvmhv_emulate_priv_tlbie()
1240 return -EINVAL; in kvmhv_emulate_priv_tlbie()
1254 gp = kvmhv_get_nested(kvm, lpid, false); in kvmhv_emulate_priv_tlbie()
1255 if (gp) { in kvmhv_emulate_priv_tlbie()
1256 kvmhv_emulate_tlbie_lpid(vcpu, gp, ric); in kvmhv_emulate_priv_tlbie()
1257 kvmhv_put_nested(gp); in kvmhv_emulate_priv_tlbie()
1265 ret = -EINVAL; in kvmhv_emulate_priv_tlbie()
1291 struct kvm *kvm = vcpu->kvm; in do_tlb_invalidate_nested_all()
1292 struct kvm_nested_guest *gp; in do_tlb_invalidate_nested_all() local
1294 gp = kvmhv_get_nested(kvm, lpid, false); in do_tlb_invalidate_nested_all()
1295 if (gp) { in do_tlb_invalidate_nested_all()
1296 kvmhv_emulate_tlbie_lpid(vcpu, gp, ric); in do_tlb_invalidate_nested_all()
1297 kvmhv_put_nested(gp); in do_tlb_invalidate_nested_all()
1322 if (!(pg_sizes & def->h_rpt_pgsize)) in do_tlb_invalidate_nested_tlb()
1325 nr_pages = (end - start) >> def->shift; in do_tlb_invalidate_nested_tlb()
1332 page_size = 1UL << def->shift; in do_tlb_invalidate_nested_tlb()
1345 * Performs partition-scoped invalidations for nested guests
1361 if (!__find_nested(vcpu->kvm, lpid)) in do_h_rpt_invalidate_pat()
1386 if (start == 0 && end == -1) in do_h_rpt_invalidate_pat()
1397 struct kvm_nested_guest *gp, in kvmhv_translate_addr_nested() argument
1404 ret = kvmppc_mmu_walk_radix_tree(vcpu, n_gpa, gpte_p, gp->l1_gr_to_hr, in kvmhv_translate_addr_nested()
1409 if (ret == -EINVAL) { in kvmhv_translate_addr_nested()
1412 } else if (ret == -ENOENT) { in kvmhv_translate_addr_nested()
1415 } else if (ret == -EFAULT) { in kvmhv_translate_addr_nested()
1418 vcpu->arch.fault_gpa = fault_addr; in kvmhv_translate_addr_nested()
1425 /* We found a pte -> check permissions */ in kvmhv_translate_addr_nested()
1428 if (!gpte_p->may_write) { in kvmhv_translate_addr_nested()
1432 } else if (vcpu->arch.trap == BOOK3S_INTERRUPT_H_INST_STORAGE) { in kvmhv_translate_addr_nested()
1434 if (!gpte_p->may_execute) { in kvmhv_translate_addr_nested()
1440 if (!gpte_p->may_read && !gpte_p->may_write) { in kvmhv_translate_addr_nested()
1450 vcpu->arch.fault_dsisr = flags; in kvmhv_translate_addr_nested()
1451 if (vcpu->arch.trap == BOOK3S_INTERRUPT_H_INST_STORAGE) { in kvmhv_translate_addr_nested()
1452 vcpu->arch.shregs.msr &= SRR1_MSR_BITS; in kvmhv_translate_addr_nested()
1453 vcpu->arch.shregs.msr |= flags; in kvmhv_translate_addr_nested()
1459 struct kvm_nested_guest *gp, in kvmhv_handle_nested_set_rc() argument
1464 struct kvm *kvm = vcpu->kvm; in kvmhv_handle_nested_set_rc()
1476 spin_lock(&kvm->mmu_lock); in kvmhv_handle_nested_set_rc()
1479 gpte.raddr, kvm->arch.lpid); in kvmhv_handle_nested_set_rc()
1481 ret = -EINVAL; in kvmhv_handle_nested_set_rc()
1487 n_gpa, gp->l1_lpid); in kvmhv_handle_nested_set_rc()
1489 ret = -EINVAL; in kvmhv_handle_nested_set_rc()
1494 spin_unlock(&kvm->mmu_lock); in kvmhv_handle_nested_set_rc()
1522 /* called with gp->tlb_lock held */
1524 struct kvm_nested_guest *gp) in __kvmhv_nested_page_fault() argument
1526 struct kvm *kvm = vcpu->kvm; in __kvmhv_nested_page_fault()
1532 unsigned long dsisr = vcpu->arch.fault_dsisr; in __kvmhv_nested_page_fault()
1533 unsigned long ea = vcpu->arch.fault_dar; in __kvmhv_nested_page_fault()
1540 if (!gp->l1_gr_to_hr) { in __kvmhv_nested_page_fault()
1541 kvmhv_update_ptbl_cache(gp); in __kvmhv_nested_page_fault()
1542 if (!gp->l1_gr_to_hr) in __kvmhv_nested_page_fault()
1548 n_gpa = vcpu->arch.fault_gpa & ~0xF000000000000FFFULL; in __kvmhv_nested_page_fault()
1551 ret = kvmhv_translate_addr_nested(vcpu, gp, n_gpa, dsisr, &gpte); in __kvmhv_nested_page_fault()
1555 * translation in the l1 partition-scoped tree, remove the shadow pte in __kvmhv_nested_page_fault()
1567 ret = kvmhv_handle_nested_set_rc(vcpu, gp, n_gpa, gpte, dsisr); in __kvmhv_nested_page_fault()
1589 return -EINVAL; in __kvmhv_nested_page_fault()
1597 if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID)) { in __kvmhv_nested_page_fault()
1599 /* unusual error -> reflect to the guest as a DSI */ in __kvmhv_nested_page_fault()
1609 if (memslot->flags & KVM_MEM_READONLY) { in __kvmhv_nested_page_fault()
1622 mmu_seq = kvm->mmu_invalidate_seq; in __kvmhv_nested_page_fault()
1627 spin_lock(&kvm->mmu_lock); in __kvmhv_nested_page_fault()
1633 spin_unlock(&kvm->mmu_lock); in __kvmhv_nested_page_fault()
1636 /* No suitable pte found -> try to insert a mapping */ in __kvmhv_nested_page_fault()
1639 if (ret == -EAGAIN) in __kvmhv_nested_page_fault()
1646 gfn = (gpa & ~((1UL << shift) - 1)) >> PAGE_SHIFT; in __kvmhv_nested_page_fault()
1648 /* 3. Compute the pte we need to insert for nest_gpa -> host r_addr */ in __kvmhv_nested_page_fault()
1665 mask = (1UL << shift) - (1UL << actual_shift); in __kvmhv_nested_page_fault()
1670 n_gpa &= ~((1UL << shift) - 1); in __kvmhv_nested_page_fault()
1677 n_rmap->rmap = (n_gpa & RMAP_NESTED_GPA_MASK) | in __kvmhv_nested_page_fault()
1678 (((unsigned long) gp->l1_lpid) << RMAP_NESTED_LPID_SHIFT); in __kvmhv_nested_page_fault()
1679 rmapp = &memslot->arch.rmap[gfn - memslot->base_gfn]; in __kvmhv_nested_page_fault()
1680 ret = kvmppc_create_pte(kvm, gp->shadow_pgtable, pte, n_gpa, level, in __kvmhv_nested_page_fault()
1681 mmu_seq, gp->shadow_lpid, rmapp, &n_rmap); in __kvmhv_nested_page_fault()
1683 if (ret == -EAGAIN) in __kvmhv_nested_page_fault()
1689 kvmhv_invalidate_shadow_pte(vcpu, gp, n_gpa, NULL); in __kvmhv_nested_page_fault()
1695 struct kvm_nested_guest *gp = vcpu->arch.nested; in kvmhv_nested_page_fault() local
1698 mutex_lock(&gp->tlb_lock); in kvmhv_nested_page_fault()
1699 ret = __kvmhv_nested_page_fault(vcpu, gp); in kvmhv_nested_page_fault()
1700 mutex_unlock(&gp->tlb_lock); in kvmhv_nested_page_fault()
1708 spin_lock(&kvm->mmu_lock); in kvmhv_nested_next_lpid()
1709 if (!idr_get_next(&kvm->arch.kvm_nested_guest_idr, &ret)) in kvmhv_nested_next_lpid()
1710 ret = -1; in kvmhv_nested_next_lpid()
1711 spin_unlock(&kvm->mmu_lock); in kvmhv_nested_next_lpid()