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authorPaolo Bonzini <pbonzini@redhat.com>2014-09-24 13:02:46 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2014-09-24 14:06:36 +0200
commit3c3c29fd0d7cddc32862c350d0700ce69953e3bd (patch)
tree69a96edbbe94bb5ab6ad6c3f239b72eda13f7593 /virt/kvm/vfio.h
parent29f1b65b5984c1e35e2d60d1416d03cee0b91ee2 (diff)
downloadlinux-3c3c29fd0d7cddc32862c350d0700ce69953e3bd.tar.gz
kvm-vfio: do not use module_init
/me got confused between the kernel and QEMU. In the kernel, you can only have one module_init function, and it will prevent unloading the module unless you also have the corresponding module_exit function. So, commit 80ce1639727e (KVM: VFIO: register kvm_device_ops dynamically, 2014-09-02) broke unloading of the kvm module, by adding a module_init function and no module_exit. Repair it by making kvm_vfio_ops_init weak, and checking it in kvm_init. Cc: Will Deacon <will.deacon@arm.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: Alex Williamson <Alex.Williamson@redhat.com> Fixes: 80ce1639727e9d38729c34f162378508c307ca25 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm/vfio.h')
-rw-r--r--virt/kvm/vfio.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/virt/kvm/vfio.h b/virt/kvm/vfio.h
new file mode 100644
index 000000000000..92eac75d6b62
--- /dev/null
+++ b/virt/kvm/vfio.h
@@ -0,0 +1,13 @@
+#ifndef __KVM_VFIO_H
+#define __KVM_VFIO_H
+
+#ifdef CONFIG_KVM_VFIO
+int kvm_vfio_ops_init(void);
+#else
+static inline int kvm_vfio_ops_init(void)
+{
+ return 0;
+}
+#endif
+
+#endif