On Tue, Nov 04, 2014 at 05:05:25PM +0000, Daniel Thompson wrote: > This week with the help of one of my colleagues (thanks Tixy) I have > been able to run some tests and figure out what it going on on vexpress-a9. > > The summary is that on some GICv1 implementations the bit to enable > group 1 interrupts cannot be accessed using secure memory accesses. More > specifically the presence/absence of the EnableGrp1 bit in the secure > version GICD_CTRL register is implementation defined. > > My original patches overlooked this and as a result the existing code > will migrate all interrupts to group but then cannot enable delivery of > group 1 interrupts. > > I'm planning to respin the code so it will automatically disable FIQ > support when the EnableGrp1 bit is not implemented. This means > vexpress-a9 will not benefit from FIQ support but will also not be > harmed by it.
That's good news, and it should mean that the Versatile Express starts booting on the nightly boot tests again. Thanks for looking into it. -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
