Commit 10a37929 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

KVM: SEV: do not take kvm->lock when destroying 



Taking the lock is useless since there are no other references,
and there are already accesses (e.g. to sev->enc_context_owner)
that do not take it.  So get rid of it.

Reviewed-by: default avatarSean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-12-pbonzini@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 17d44a96

arch/x86/kvm/svm/sev.c

+0 −4
Original line number Diff line number Diff line
@@ -2048,8 +2048,6 @@ void sev_vm_destroy(struct kvm *kvm) 
		return;

	}



	mutex_lock(&kvm->lock);



	/*

	 * Ensure that all guest tagged cache entries are flushed before

	 * releasing the pages back to the system for use. CLFLUSH will
@@ -2069,8 +2067,6 @@ void sev_vm_destroy(struct kvm *kvm) 
		}

	}



	mutex_unlock(&kvm->lock);



	sev_unbind_asid(kvm, sev->handle);

	sev_asid_free(sev);

}