Re: [Xen-devel] Question about ARM GIC

[Josh Zhao <joshsystem@xxxxxxxxx>]

I got it,  thanks!

2013/8/16 Julien Grall <julien.grall@xxxxxxxxxx>:
> On 08/16/2013 10:46 AM, Josh Zhao wrote:
>> Hi,
>
> Hi,
>
>> Anyone can help me understand that the Dom0 and DomU will initialize
>> GICD in booting stage, but I don't see any code to  remap GICD for
>> guest OS. I am wondering how it works?
>
> The GIC doesn't handle the virtualization for the distributor, so it's
> emulated by Xen. All accesses to the GICD will trap and redirect to
> xen/arch/arm/vgic.c.
> You can look at vgic_distr_mmio_{read,write} in the previous file.
>
> Cheers,
>
> --
> Julien Grall

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