1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2020 - Google LLC 4 * Author: David Brazdil <dbrazdil@google.com> 5 */ 6 7 #include <asm/kvm_asm.h> 8 #include <asm/kvm_hyp.h> 9 #include <asm/kvm_mmu.h> 10 11 /* 12 * nVHE copy of data structures tracking available CPU cores. 13 * Only entries for CPUs that were online at KVM init are populated. 14 * Other CPUs should not be allowed to boot because their features were 15 * not checked against the finalized system capabilities. 16 */ 17 u64 __ro_after_init __cpu_logical_map[NR_CPUS] = { [0 ... NR_CPUS-1] = INVALID_HWID }; 18 19 u64 cpu_logical_map(unsigned int cpu) 20 { 21 if (cpu >= ARRAY_SIZE(__cpu_logical_map)) 22 hyp_panic(); 23 24 return __cpu_logical_map[cpu]; 25 } 26 27 unsigned long __hyp_per_cpu_offset(unsigned int cpu) 28 { 29 unsigned long *cpu_base_array; 30 unsigned long this_cpu_base; 31 unsigned long elf_base; 32 33 if (cpu >= ARRAY_SIZE(kvm_arm_hyp_percpu_base)) 34 hyp_panic(); 35 36 cpu_base_array = (unsigned long *)hyp_symbol_addr(kvm_arm_hyp_percpu_base); 37 this_cpu_base = kern_hyp_va(cpu_base_array[cpu]); 38 elf_base = (unsigned long)hyp_symbol_addr(__per_cpu_start); 39 return this_cpu_base - elf_base; 40 } 41