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