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KVM: Introduce kvm_get_kvm_safe()

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Introduce this safe version of kvm_get_kvm() so that it can be called even
during vm destruction.  Use it in kvm_debugfs_open() and remove the verbose
comment.  Prepare to be used elsewhere.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210625153214.43106-3-peterx@redhat.com>
[Preserve the comment in kvm_debugfs_open. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu
2021-06-25 11:32:07 -04:00
committed by Paolo Bonzini
parent 1694caef42
commit 605c713023
2 changed files with 16 additions and 5 deletions
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include/linux/kvm_host.h
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@@ -755,6 +755,7 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
void kvm_exit(void);
void kvm_get_kvm(struct kvm *kvm);
bool kvm_get_kvm_safe(struct kvm *kvm);
void kvm_put_kvm(struct kvm *kvm);
bool file_is_kvm(struct file *file);
void kvm_put_kvm_no_destroy(struct kvm *kvm);