It is valid for a PCI device to not have a legacy IRQ. In that case, do
not print an error to keep the logs clean.
This relies on pciback being updated to return -ENOENT for a missing
GSI.
Fixes: b93e5981d2 ("tools: Add new function to get gsi from dev")
Signed-off-by: Jason Andryuk <jason.andryuk@amd.com>
Reviewed-by: Anthony PERARD <anthony.perard@vates.tech>
On PVH dom0, when passthrough a device to domU, QEMU and xl tools
want to use gsi number to do pirq mapping, see QEMU code
xen_pt_realize->xc_physdev_map_pirq, and xl code
pci_add_dm_done->xc_physdev_map_pirq, but in current codes, the gsi
number is got from file /sys/bus/pci/devices/<sbdf>/irq, that is
wrong, because irq is not equal with gsi, they are in different
spaces, so pirq mapping fails.
And in current codes, there is no method to get gsi for userspace.
For above purpose, add new function to get gsi, and the
corresponding ioctl is implemented on linux kernel side.
Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Chen Jiqian <Jiqian.Chen@amd.com>
Reviewed-by: Anthony PERARD <anthony.perard@vates.tech>
Today tools/libxc needs to be built after tools/libs as libxenctrl is
depending on some libraries in tools/libs. This in turn blocks moving
other libraries depending on libxenctrl below tools/libs.
So carve out libxenctrl from tools/libxc and move it into
tools/libs/ctrl.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org> (stubdom parts)
Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> (python parts)
Acked-by: Wei Liu <wl@xen.org>
Jason Andryuk