On Wed, Oct 06, 2021 at 06:40:27PM +0100, Rahul Singh wrote: > ARM architecture does not implement I/O ports. Ignore this call on ARM > to avoid the overhead of making a hypercall just for Xen to return > -ENOSYS.
What is the cal trace of this function actually on Arm? AFAICT libxl will only call xc_domain_ioport_permission if there are IO ports explicitly defined in the guest configuration, or if any of the BARs of the PCI device is in the IO space, which is not possible on Arm. Thanks, Roger.
