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2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d 
 kernel/arch/powerpc/include/asm/kvm_book3s.h
....@@ -1,16 +1,5 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
12 /*
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License, version 2, as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
143  *
154  * Copyright SUSE Linux Products GmbH 2009
165  *
....@@ -89,7 +78,7 @@
8978 	struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
9079 	struct list_head preempt_list;
9180 	spinlock_t lock;
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-	struct swait_queue_head wq;
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+	struct rcuwait wait;
9382 	spinlock_t stoltb_lock;	/* protects stolen_tb and preempt_tb */
9483 	u64 stolen_tb;
9584 	u64 preempt_tb;
....@@ -166,12 +155,11 @@
166155 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
167156 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
168157 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
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-extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
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-			struct kvm_vcpu *vcpu, unsigned long addr,
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-			unsigned long status);
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+extern int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu,
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+			unsigned long addr, unsigned long status);
172160 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
173161 			unsigned long slb_v, unsigned long valid);
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-extern int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
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+extern int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu,
175163 			unsigned long gpa, gva_t ea, int is_store);
176164 
177165 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
....@@ -185,13 +173,41 @@
185173 extern int kvmppc_mmu_hv_init(void);
186174 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
187175 
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-extern int kvmppc_book3s_radix_page_fault(struct kvm_run *run,
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-			struct kvm_vcpu *vcpu,
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+extern int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
190177 			unsigned long ea, unsigned long dsisr);
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+extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid,
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+					gva_t eaddr, void *to, void *from,
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+					unsigned long n);
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+extern long kvmhv_copy_from_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr,
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+					void *to, unsigned long n);
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+extern long kvmhv_copy_to_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr,
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+				      void *from, unsigned long n);
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+extern int kvmppc_mmu_walk_radix_tree(struct kvm_vcpu *vcpu, gva_t eaddr,
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+				      struct kvmppc_pte *gpte, u64 root,
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+				      u64 *pte_ret_p);
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+extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr,
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+			struct kvmppc_pte *gpte, u64 table,
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+			int table_index, u64 *pte_ret_p);
191191 extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
192192 			struct kvmppc_pte *gpte, bool data, bool iswrite);
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+extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr,
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+				    unsigned int pshift, unsigned int lpid);
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+extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa,
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+			unsigned int shift,
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+			const struct kvm_memory_slot *memslot,
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+			unsigned int lpid);
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+extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested,
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+				    bool writing, unsigned long gpa,
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+				    unsigned int lpid);
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+extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu,
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+				unsigned long gpa,
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+				struct kvm_memory_slot *memslot,
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+				bool writing, bool kvm_ro,
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+				pte_t *inserted_pte, unsigned int *levelp);
193207 extern int kvmppc_init_vm_radix(struct kvm *kvm);
194208 extern void kvmppc_free_radix(struct kvm *kvm);
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+extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd,
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+				      unsigned int lpid);
195211 extern int kvmppc_radix_init(void);
196212 extern void kvmppc_radix_exit(void);
197213 extern int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
....@@ -202,6 +218,8 @@
202218 			unsigned long gfn);
203219 extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
204220 			struct kvm_memory_slot *memslot, unsigned long *map);
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+extern void kvmppc_radix_flush_memslot(struct kvm *kvm,
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+			const struct kvm_memory_slot *memslot);
205223 extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
206224 
207225 /* XXX remove this export when load_last_inst() is generic */
....@@ -214,12 +232,12 @@
214232 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
215233 			   bool upper, u32 val);
216234 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
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-extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
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+extern int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu);
218236 extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
219237 			bool writing, bool *writable);
220238 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
221239 			unsigned long *rmap, long pte_index, int realmode);
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-extern void kvmppc_update_dirty_map(struct kvm_memory_slot *memslot,
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+extern void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot,
223241 			unsigned long gfn, unsigned long psize);
224242 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
225243 			unsigned long pte_index);
....@@ -270,6 +288,22 @@
270288 static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {}
271289 static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {}
272290 #endif
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+
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+long kvmhv_nested_init(void);
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+void kvmhv_nested_exit(void);
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+void kvmhv_vm_nested_init(struct kvm *kvm);
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+long kvmhv_set_partition_table(struct kvm_vcpu *vcpu);
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+long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu);
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+void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1);
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+void kvmhv_release_all_nested(struct kvm *kvm);
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+long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu);
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+long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu);
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+int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu,
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+			  u64 time_limit, unsigned long lpcr);
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+void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr);
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+void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
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+				   struct hv_guest_state *hr);
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+long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu);
273307 
274308 void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
275309 
....@@ -383,9 +417,6 @@
383417 #define INS_DCBZ			0x7c0007ec
384418 /* TO = 31 for unconditional trap */
385419 #define INS_TW				0x7fe00008
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-
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-/* LPIDs we support with this build -- runtime limit may be lower */
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-#define KVMPPC_NR_LPIDS			(LPID_RSVD + 1)
389420 
390421 #define SPLIT_HACK_MASK			0xff000000
391422 #define SPLIT_HACK_OFFS			0xfb000000