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authorPaolo Bonzini <pbonzini@redhat.com>2021-11-23 03:50:35 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2021-11-30 11:54:14 +0300
commit10a37929efeb4c51a0069afdd537c4fa3831f6e5 (patch)
treeef056b1ae7077a9352a201a3cf5f22bfdd9ea6ce /arch
parent17d44a96f000fe1040d4ba1c34e458c63be6b7ce (diff)
downloadlinux-10a37929efeb4c51a0069afdd537c4fa3831f6e5.tar.xz
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: Sean Christopherson <seanjc@google.com> Message-Id: <20211123005036.2954379-12-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/svm/sev.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 89a716290fac..bbbf980c7e40 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -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);
}