1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2020 Google LLC 4 * Author: Quentin Perret <qperret@google.com> 5 */ 6 7 #ifndef __KVM_NVHE_MEM_PROTECT__ 8 #define __KVM_NVHE_MEM_PROTECT__ 9 #include <linux/kvm_host.h> 10 #include <asm/kvm_hyp.h> 11 #include <asm/kvm_pgtable.h> 12 #include <asm/virt.h> 13 #include <nvhe/spinlock.h> 14 15 struct host_kvm { 16 struct kvm_arch arch; 17 struct kvm_pgtable pgt; 18 struct kvm_pgtable_mm_ops mm_ops; 19 hyp_spinlock_t lock; 20 }; 21 extern struct host_kvm host_kvm; 22 23 int __pkvm_prot_finalize(void); 24 int __pkvm_mark_hyp(phys_addr_t start, phys_addr_t end); 25 26 int kvm_host_prepare_stage2(void *pgt_pool_base); 27 void handle_host_mem_abort(struct kvm_cpu_context *host_ctxt); 28 29 static __always_inline void __load_host_stage2(void) 30 { 31 if (static_branch_likely(&kvm_protected_mode_initialized)) 32 __load_stage2(&host_kvm.arch.mmu, host_kvm.arch.vtcr); 33 else 34 write_sysreg(0, vttbr_el2); 35 } 36 #endif /* __KVM_NVHE_MEM_PROTECT__ */ 37