[Xen-devel] size of hypercall parameter

[Anh Dinh <ug93tad@xxxxxxxxx>]

I wrote a hypercall that takes in a pointer to memory region:

void do_test(char *p){

... // do something with the memory in the hypervisor space

}

and invoke it in both Dom0 and DomU through privcmd.Â

But when I pass a memory region of tens of KB (not very large), the system crashes and reboots.Â

Is there a limit to the memory region passed into the hypercall?

Cheers,

Anh.Â

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