[RFC PATCH v2 03/11] KVM: Introduce kvm_vm_has_run_once
From: Raghavendra Rao Ananta <hidden>
Date: 2021-11-13 01:22:55
Also in:
kvm, kvmarm, lkml
Subsystem:
kernel virtual machine (kvm), the rest · Maintainers:
Paolo Bonzini, Linus Torvalds
The upcoming patches need a way to detect if the VM, as a whole, has started. Hence, unionize kvm_vcpu_has_run_once() of all the vcpus of the VM and build kvm_vm_has_run_once() to achieve the functionality. No functional change intended. Signed-off-by: Raghavendra Rao Ananta <redacted> --- include/linux/kvm_host.h | 2 ++ virt/kvm/kvm_main.c | 17 +++++++++++++++++ 2 files changed, 19 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index b373929c71eb..102e00c0e21c 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h@@ -1854,4 +1854,6 @@ static inline bool kvm_vcpu_has_run_once(struct kvm_vcpu *vcpu) return vcpu->has_run_once; } +bool kvm_vm_has_run_once(struct kvm *kvm); + #endif
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 1ec8a8e959b2..3d8d96e8f61d 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c@@ -4339,6 +4339,23 @@ static int kvm_vm_ioctl_get_stats_fd(struct kvm *kvm) return fd; } +bool kvm_vm_has_run_once(struct kvm *kvm) +{ + int i, ret = false; + struct kvm_vcpu *vcpu; + + mutex_lock(&kvm->lock); + + kvm_for_each_vcpu(i, vcpu, kvm) { + ret = kvm_vcpu_has_run_once(vcpu); + if (ret) + break; + } + + mutex_unlock(&kvm->lock); + return ret; +} + static long kvm_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) {
--
2.34.0.rc1.387.gb447b232ab-goog
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