On 03/12/15 11:23, Vitaly Kuznetsov wrote: > David Vrabel <david.vra...@citrix.com> writes: > >> Adding the rtc platform device when there are no legacy irqs (no >> legacy PIC) > > No PIC != No legacy IRQs, Hyper-V Gen2 represents such a platform (and > it has RTC on irq8). I've tested this patch against it and it appears to > work because the device is present in ACPI and we initialize it in > drivers/acpi/acpi_cmos_rtc.c, add_rtc_cmos() bails out in the very > beginning as we see PNP0b00 device.
It's not a legacy IRQ if it isn't going via the legacy PIC, it just happens to have the same number. I think it is safe to assume that any machine with a CMOS RTC but no PNP information is also going to have a legacy PIC. David _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
