From: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> virt inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IBMHO0 CVE: NA -------------------------------- Provide interfaces to get/put pinned VMIDs from KVM VMID allocator. This will be used by SMMUv3 driver in subsequent patch. Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com> Signed-off-by: lishusen <lishusen2@huawei.com> --- arch/arm64/kvm/Kconfig | 1 + arch/arm64/kvm/arm.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 52edbd7f6340..d4740f693fdf 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -44,6 +44,7 @@ menuconfig KVM select GUEST_PERF_EVENTS if PERF_EVENTS select INTERVAL_TREE select XARRAY_MULTI + select HAVE_KVM_PINNED_VMID help Support hosting virtualized guest machines. diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index d0d4e6bdc06b..08cfe550c155 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -892,6 +892,20 @@ int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu) return ret; } +int kvm_arch_pinned_vmid_get(struct kvm *kvm) +{ + int vmid; + + vmid = kvm_arm_pinned_vmid_get(&kvm->arch.mmu.vmid); + + return (vmid == 0) ? -EINVAL : vmid; +} + +void kvm_arch_pinned_vmid_put(struct kvm *kvm) +{ + kvm_arm_pinned_vmid_put(&kvm->arch.mmu.vmid); +} + bool kvm_arch_intc_initialized(struct kvm *kvm) { return vgic_initialized(kvm); -- 2.33.0