[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2] xen: arm: context switch vtimer PPI state.
On Tue, 2015-11-10 at 16:20 +0000, Ian Campbell wrote: > ... instead of artificially masking the timer interrupt in the timer > state Julien pointed out IRL that this now causesÂvgic_{enable,disable}_irqs to call into the h/w driver for that irq, which is new for a PPI. The GICv3 hook for enable/disable will write to the local redistributor, but a cpu is entitled to do write to another vcpus GICR, for the banked registers associated with PPIs. The upshot is that we will enable/disable the local PPI instead of the remote one as expected. This will require some thought (or if I'm really lucky some careful reading of the spec to turn this into the expected behaviour for such banked registers, doubtful...)... Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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