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a4097b3511
We're about to need kvm_psci_version in HYP too. So let's turn it into a static inline, and pass the kvm structure as a second parameter (so that HYP can do a kern_hyp_va on it). Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/*
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* Copyright (C) 2012,2013 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __KVM_ARM_PSCI_H__
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#define __KVM_ARM_PSCI_H__
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#include <linux/kvm_host.h>
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#include <uapi/linux/psci.h>
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#define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1)
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#define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2)
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#define KVM_ARM_PSCI_1_0 PSCI_VERSION(1, 0)
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#define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_0
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/*
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* We need the KVM pointer independently from the vcpu as we can call
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* this from HYP, and need to apply kern_hyp_va on it...
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*/
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static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm)
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{
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/*
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* Our PSCI implementation stays the same across versions from
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* v0.2 onward, only adding the few mandatory functions (such
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* as FEATURES with 1.0) that are required by newer
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* revisions. It is thus safe to return the latest.
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*/
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if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features))
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return KVM_ARM_PSCI_LATEST;
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return KVM_ARM_PSCI_0_1;
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}
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int kvm_hvc_call_handler(struct kvm_vcpu *vcpu);
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#endif /* __KVM_ARM_PSCI_H__ */
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