On Fri, 5 Jan 2024, Jiqian Chen wrote: > In PVH dom0, it uses the linux local interrupt mechanism, > when it allocs irq for a gsi, it is dynamic, and follow > the principle of applying first, distributing first. And > the irq number is alloced from small to large, but the > applying gsi number is not, may gsi 38 comes before gsi > 28, that causes the irq number is not equal with the gsi > number. And when passthrough a device, xl wants to use > gsi to map pirq, see pci_add_dm_done->xc_physdev_map_pirq, > but the gsi number is got from file > /sys/bus/pci/devices/<sbdf>/irq in current code, so it > will fail when mapping. > > So, use real gsi number read from gsi sysfs. > > Co-developed-by: Huang Rui <ray.hu...@amd.com> > Signed-off-by: Jiqian Chen <jiqian.c...@amd.com>
Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
