Merge tag 'mt76-for-kvalo-2021-01-29' of https://github.com/nbd168/wireless
[linux-2.6-microblaze.git] / arch / arm64 / kvm / hyp / nvhe / hyp-smp.c
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 hyp_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(hyp_cpu_logical_map))
22                 hyp_panic();
23
24         return hyp_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 }