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authorPaolo Bonzini <pbonzini@redhat.com>2017-08-02 17:55:54 +0200
committerRadim Krčmář <rkrcmar@redhat.com>2017-08-02 22:41:02 +0200
commit3898da947bbaf9e7fd5816e825978d360028bba2 (patch)
tree5af705bb61bbc9760de0fbc3d102227f0b21fed4 /arch/score
parentebd28fcb55e288030abb5bca4869603b3e1f5f7c (diff)
downloadlinux-3898da947bbaf9e7fd5816e825978d360028bba2.tar.bz2
KVM: avoid using rcu_dereference_protected
During teardown, accesses to memslots and buses are using rcu_dereference_protected with an always-true condition because these accesses are done outside the usual mutexes. This is because the last reference is gone and there cannot be any concurrent modifications, but rcu_dereference_protected is ugly and unobvious. Instead, check the refcount in kvm_get_bus and __kvm_memslots. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'arch/score')
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