diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-04-27 17:33:14 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-04-27 17:33:14 +0200 |
| commit | c24a7be2110ddac2ab75abcded76c62dccb6b1f0 (patch) | |
| tree | cb4ef87091258db6b0f94cf2d4bd938eae1e26de /arch/arm/kvm/psci.c | |
| parent | kvm: nVMX: Remove superfluous VMX instruction fault checks (diff) | |
| parent | ARM: KVM: Fix idmap stub entry when running Thumb-2 code (diff) | |
| download | linux-c24a7be2110ddac2ab75abcded76c62dccb6b1f0.tar.xz linux-c24a7be2110ddac2ab75abcded76c62dccb6b1f0.zip | |
Merge tag 'kvm-arm-for-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/ARM Changes for v4.12.
Changes include:
- Using the common sysreg definitions between KVM and arm64
- Improved hyp-stub implementation with support for kexec and kdump on the 32-bit side
- Proper PMU exception handling
- Performance improvements of our GIC handling
- Support for irqchip in userspace with in-kernel arch-timers and PMU support
- A fix for a race condition in our PSCI code
Conflicts:
Documentation/virtual/kvm/api.txt
include/uapi/linux/kvm.h
Diffstat (limited to 'arch/arm/kvm/psci.c')
| -rw-r--r-- | arch/arm/kvm/psci.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c index c2b131527a64..a08d7a93aebb 100644 --- a/arch/arm/kvm/psci.c +++ b/arch/arm/kvm/psci.c @@ -208,9 +208,10 @@ int kvm_psci_version(struct kvm_vcpu *vcpu) static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) { - int ret = 1; + struct kvm *kvm = vcpu->kvm; unsigned long psci_fn = vcpu_get_reg(vcpu, 0) & ~((u32) 0); unsigned long val; + int ret = 1; switch (psci_fn) { case PSCI_0_2_FN_PSCI_VERSION: @@ -230,7 +231,9 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) break; case PSCI_0_2_FN_CPU_ON: case PSCI_0_2_FN64_CPU_ON: + mutex_lock(&kvm->lock); val = kvm_psci_vcpu_on(vcpu); + mutex_unlock(&kvm->lock); break; case PSCI_0_2_FN_AFFINITY_INFO: case PSCI_0_2_FN64_AFFINITY_INFO: @@ -279,6 +282,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu) { + struct kvm *kvm = vcpu->kvm; unsigned long psci_fn = vcpu_get_reg(vcpu, 0) & ~((u32) 0); unsigned long val; @@ -288,7 +292,9 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu) val = PSCI_RET_SUCCESS; break; case KVM_PSCI_FN_CPU_ON: + mutex_lock(&kvm->lock); val = kvm_psci_vcpu_on(vcpu); + mutex_unlock(&kvm->lock); break; default: val = PSCI_RET_NOT_SUPPORTED; |