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| author | Marc Zyngier <maz@kernel.org> | 2020-09-18 14:25:40 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-09-29 18:08:16 +0300 |
| commit | 29e8910a566aad3ee72f729e45842858d51ced8d (patch) | |
| tree | 24f724d8fc710a804931c0adcbe1418794491e56 /arch/arm64/include/asm/kvm_mmu.h | |
| parent | c28762070ca651fe7a981b8f31d972c9b7d2c386 (diff) | |
| download | linux-29e8910a566aad3ee72f729e45842858d51ced8d.tar.xz | |
KVM: arm64: Simplify handling of ARCH_WORKAROUND_2
Owing to the fact that the host kernel is always mitigated, we can
drastically simplify the WA2 handling by keeping the mitigation
state ON when entering the guest. This means the guest is either
unaffected or not mitigated.
This results in a nice simplification of the mitigation space,
and the removal of a lot of code that was never really used anyway.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/kvm_mmu.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index 873e12430ac7..36606ef9e435 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -526,23 +526,6 @@ static inline int kvm_map_vectors(void) } #endif -DECLARE_PER_CPU_READ_MOSTLY(u64, arm64_ssbd_callback_required); - -static inline int hyp_map_aux_data(void) -{ - int cpu, err; - - for_each_possible_cpu(cpu) { - u64 *ptr; - - ptr = per_cpu_ptr(&arm64_ssbd_callback_required, cpu); - err = create_hyp_mappings(ptr, ptr + 1, PAGE_HYP); - if (err) - return err; - } - return 0; -} - #define kvm_phys_to_vttbr(addr) phys_to_ttbr(addr) /* |