On 2015/1/17 2:13, Konrad Rzeszutek Wilk wrote: > On Thu, Jan 15, 2015 at 09:04:35PM +0800, Jiang Liu wrote: <snit> >> >> Note: we need to test this patch on those special AMD systems which >> override normal SCI GSI (9) with strange GSI (20). > > [ 0.000000] DMI: Supermicro X8DTN/X8DTN, BIOS 2.1c 10/28/2011 > .. > 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) > [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level) > [ 0.000000] ACPI: IRQ0 used by override. > .. > 6.358737] xen: registering gsi 20 triggering 0 polarity 1 > [ 6.358756] xen: --> pirq=20 -> irq=20 (gsi=20) > ... > -bash-4.1# cat /proc/interrupts |grep acpi > 20: 0 0 0 xen-pirq-ioapic-level acpi > Thanks Konrad, it works as expected. Previously IRQ9 was assigned to ACPI SCI GSI 20, now it assigns IRQ20. But that's OK, ACPI has no special requirement about the assigned IRQ number, we could assign any valid IRQ number for ACPI SCI GSI. Thanks! Gerry
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