On 08/23/2012 10:49 AM, Pandarathil, Vijaymohan R wrote:
> Hi,
>
> I am looking for the recommended approach for accessing KVM driver data from other kernel components. In my case, I need to set some global variable/state in KVM driver from one of the NMI handlers. I see that using kvm_x86_ops is one option. I can define a new function as part of kvm_x86_ops and invoke that function from the NMI handler as below.
>
> nmi_handler() {
>
> ...
> If (kvm_x86_ops) {
> kvm_x86_ops->new_fn();
>
> }
>
> after adding new_func() to struct kvm_x86_ops.
>
> Is this the right approach ?
No, kvm_x86_ops is not available to the core kernel code.
> Or is there some other existing mechanism ? Is KVM driver always loaded ?
No.
> I am fairly new to KVM and so any guidance is very much appreciated.
Do something like
void nmi_xyz_register(struct nmi_xyz *x);
void nmi_xyz_unregister(struct nmi_xyz *x);
struct nmi_xyz {
void (*nmi)(void);
};
then add code to kvm to use nmi_xyz (whatever that is).
--
error compiling committee.c: too many arguments to function
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