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authorGregory Haskins <ghaskins@novell.com>2009-07-07 17:08:44 -0400
committerAvi Kivity <avi@redhat.com>2009-09-10 01:33:12 -0400
commit090b7aff27120cdae76a346a70db394844fea598 (patch)
tree4676410f57a44d7c0fba9d791fc77d7850ad1d51 /include/linux/kvm_host.h
parentfef07aae9cd9ed82f94228c311b35360f1f38902 (diff)
KVM: make io_bus interface more robust
Today kvm_io_bus_regsiter_dev() returns void and will internally BUG_ON if it fails. We want to create dynamic MMIO/PIO entries driven from userspace later in the series, so we need to enhance the code to be more robust with the following changes: 1) Add a return value to the registration function 2) Fix up all the callsites to check the return code, handle any failures, and percolate the error up to the caller. 3) Add an unregister function that collapses holes in the array Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
-rw-r--r--include/linux/kvm_host.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 077e8bb875a9..983b0bdeb3ff 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -64,10 +64,14 @@ int kvm_io_bus_write(struct kvm_io_bus *bus, gpa_t addr, int len,
64 const void *val); 64 const void *val);
65int kvm_io_bus_read(struct kvm_io_bus *bus, gpa_t addr, int len, 65int kvm_io_bus_read(struct kvm_io_bus *bus, gpa_t addr, int len,
66 void *val); 66 void *val);
67void __kvm_io_bus_register_dev(struct kvm_io_bus *bus, 67int __kvm_io_bus_register_dev(struct kvm_io_bus *bus,
68 struct kvm_io_device *dev);
69int kvm_io_bus_register_dev(struct kvm *kvm, struct kvm_io_bus *bus,
70 struct kvm_io_device *dev);
71void __kvm_io_bus_unregister_dev(struct kvm_io_bus *bus,
72 struct kvm_io_device *dev);
73void kvm_io_bus_unregister_dev(struct kvm *kvm, struct kvm_io_bus *bus,
68 struct kvm_io_device *dev); 74 struct kvm_io_device *dev);
69void kvm_io_bus_register_dev(struct kvm *kvm, struct kvm_io_bus *bus,
70 struct kvm_io_device *dev);
71 75
72struct kvm_vcpu { 76struct kvm_vcpu {
73 struct kvm *kvm; 77 struct kvm *kvm;