On Mon, Jan 04, 2021 at 03:12:02PM +0100, Roger Pau Monne wrote: > Current check for DM_OP availability in osdep_xendevicemodel_open will > always fail, because using DOMID_INVALID as the domain parameter will > make the hypervisor return -ESRCH, which will disable the usage of > the DOM_OP interface. > > Fix this by checking the errno code of the test ioctl against > the privcmd unimplemented errno.
Forget about this patch, it's my fault for not realizing Linux privcmd checks that the num is != 0 before issuing the hypercall. Sorry for the noise. Roger.
