diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2018-04-12 12:11:25 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-20 08:21:04 +0200 |
| commit | 33e6484755bc6fbd16f455a4e23e68335db3cb21 (patch) | |
| tree | f0104a24fc9cf96cb2bec5265f0fd42073bc7b9e | |
| parent | 8b106affdfb63b6fd71c49b230c942fa525d8a0c (diff) | |
arm/arm64: KVM: Add PSCI_VERSION helper
From: Marc Zyngier <marc.zyngier@arm.com>
commit d0a144f12a7ca8368933eae6583c096c363ec506 upstream.
As we're about to trigger a PSCI version explosion, it doesn't
hurt to introduce a PSCI_VERSION helper that is going to be
used everywhere.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
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>
[v4.9: account for files moved to virt/ upstream]
Signed-off-by: Mark Rutland <mark.rutland@arm.com> [v4.9 backport]
Tested-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm/kvm/psci.c | 4 | ||||
| -rw-r--r-- | include/kvm/arm_psci.h | 6 | ||||
| -rw-r--r-- | include/uapi/linux/psci.h | 3 |
3 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c index f44ecf677414..5d8ad0e6661c 100644 --- a/arch/arm/kvm/psci.c +++ b/arch/arm/kvm/psci.c @@ -25,8 +25,6 @@ #include <kvm/arm_psci.h> -#include <uapi/linux/psci.h> - /* * This is an implementation of the Power State Coordination Interface * as described in ARM document number ARM DEN 0022A. @@ -220,7 +218,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) * Bits[31:16] = Major Version = 0 * Bits[15:0] = Minor Version = 2 */ - val = 2; + val = KVM_ARM_PSCI_0_2; break; case PSCI_0_2_FN_CPU_SUSPEND: case PSCI_0_2_FN64_CPU_SUSPEND: diff --git a/include/kvm/arm_psci.h b/include/kvm/arm_psci.h index 2042bb909474..5659343580a3 100644 --- a/include/kvm/arm_psci.h +++ b/include/kvm/arm_psci.h @@ -18,8 +18,10 @@ #ifndef __KVM_ARM_PSCI_H__ #define __KVM_ARM_PSCI_H__ -#define KVM_ARM_PSCI_0_1 1 -#define KVM_ARM_PSCI_0_2 2 +#include <uapi/linux/psci.h> + +#define KVM_ARM_PSCI_0_1 PSCI_VERSION(0, 1) +#define KVM_ARM_PSCI_0_2 PSCI_VERSION(0, 2) int kvm_psci_version(struct kvm_vcpu *vcpu); int kvm_psci_call(struct kvm_vcpu *vcpu); diff --git a/include/uapi/linux/psci.h b/include/uapi/linux/psci.h index 3d7a0fc021a7..39930ca998cd 100644 --- a/include/uapi/linux/psci.h +++ b/include/uapi/linux/psci.h @@ -87,6 +87,9 @@ (((ver) & PSCI_VERSION_MAJOR_MASK) >> PSCI_VERSION_MAJOR_SHIFT) #define PSCI_VERSION_MINOR(ver) \ ((ver) & PSCI_VERSION_MINOR_MASK) +#define PSCI_VERSION(maj, min) \ + ((((maj) << PSCI_VERSION_MAJOR_SHIFT) & PSCI_VERSION_MAJOR_MASK) | \ + ((min) & PSCI_VERSION_MINOR_MASK)) /* PSCI features decoding (>=1.0) */ #define PSCI_1_0_FEATURES_CPU_SUSPEND_PF_SHIFT 1 |