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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-02-06 17:56:13 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2018-02-06 22:54:03 +0000 |
| commit | a4097b351118e821841941a79ec77d3ce3f1c5d9 (patch) | |
| tree | f2ad313657833c68e8df651b270fbef2cf05c145 /include/kvm | |
| parent | 09e6be12effdb33bf7210c8867bbd213b66a499e (diff) | |
| download | linux-a4097b351118e821841941a79ec77d3ce3f1c5d9.tar.gz | |
arm/arm64: KVM: Turn kvm_psci_version into a static inline
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>
Diffstat (limited to 'include/kvm')
| -rw-r--r-- | include/kvm/arm_psci.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/include/kvm/arm_psci.h b/include/kvm/arm_psci.h index ed1dd8088f1c..e518e4e3dfb5 100644 --- a/include/kvm/arm_psci.h +++ b/include/kvm/arm_psci.h @@ -18,6 +18,7 @@ #ifndef __KVM_ARM_PSCI_H__ #define __KVM_ARM_PSCI_H__ +#include <linux/kvm_host.h> #include <uapi/linux/psci.h> #define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1) @@ -26,7 +27,25 @@ #define KVM_ARM_PSCI_LATEST KVM_ARM_PSCI_1_0 -int kvm_psci_version(struct kvm_vcpu *vcpu); +/* + * We need the KVM pointer independently from the vcpu as we can call + * this from HYP, and need to apply kern_hyp_va on it... + */ +static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm) +{ + /* + * Our PSCI implementation stays the same across versions from + * v0.2 onward, only adding the few mandatory functions (such + * as FEATURES with 1.0) that are required by newer + * revisions. It is thus safe to return the latest. + */ + if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) + return KVM_ARM_PSCI_LATEST; + + return KVM_ARM_PSCI_0_1; +} + + int kvm_hvc_call_handler(struct kvm_vcpu *vcpu); #endif /* __KVM_ARM_PSCI_H__ */ |