diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-02-06 17:56:21 +0000 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2018-03-07 13:15:36 +0800 |
| commit | 103afaebcbf03b628aa51f5889125288574c04f9 (patch) | |
| tree | 13c3fb49aea08b78339a148a5ca8a01cb7b54f8c /arch/arm64/kvm/hyp | |
| parent | 8a851aba3bb0299125d30ef4a7c767001e278563 (diff) | |
arm64: Kill PSCI_GET_VERSION as a variant-2 workaroundv4.9-all-branches-upstream-only
commit 3a0a397ff5ff upstream.
Now that we've standardised on SMCCC v1.1 to perform the branch
prediction invalidation, let's drop the previous band-aid.
If vendors haven't updated their firmware to do SMCCC 1.1, they
haven't updated PSCI either, so we don't loose anything.
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Conflicts:
no falkor/thunderx2/vulcan in arch/arm64/kernel/cpu_errata.c
Diffstat (limited to 'arch/arm64/kvm/hyp')
| -rw-r--r-- | arch/arm64/kvm/hyp/switch.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c index 996328edd233..154b47139362 100644 --- a/arch/arm64/kvm/hyp/switch.c +++ b/arch/arm64/kvm/hyp/switch.c @@ -311,20 +311,6 @@ again: if (exit_code == ARM_EXCEPTION_TRAP && !__populate_fault_info(vcpu)) goto again; - if (exit_code == ARM_EXCEPTION_TRAP && - (kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_HVC64 || - kvm_vcpu_trap_get_class(vcpu) == ESR_ELx_EC_HVC32)) { - u32 val = vcpu_get_reg(vcpu, 0); - - if (val == PSCI_0_2_FN_PSCI_VERSION) { - val = kvm_psci_version(vcpu, kern_hyp_va(vcpu->kvm)); - if (unlikely(val == KVM_ARM_PSCI_0_1)) - val = PSCI_RET_NOT_SUPPORTED; - vcpu_set_reg(vcpu, 0, val); - goto again; - } - } - if (static_branch_unlikely(&vgic_v2_cpuif_trap) && exit_code == ARM_EXCEPTION_TRAP) { bool valid; |