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

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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: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-12-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2021-11-22 19:50:35 -05:00
parent 17d44a96f0
commit 10a37929ef
1 changed files with 0 additions and 4 deletions
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4
arch/x86/kvm/svm/sev.c
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@ -2048,8 +2048,6 @@ void sev_vm_destroy(struct kvm *kvm)
return; return;
} }
mutex_lock(&kvm->lock);
/* /*
* Ensure that all guest tagged cache entries are flushed before * Ensure that all guest tagged cache entries are flushed before
* releasing the pages back to the system for use. CLFLUSH will * 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_unbind_asid(kvm, sev->handle);
sev_asid_free(sev); sev_asid_free(sev);
} }