On 2 October 2012 20:28, Will Deacon <will.deacon@xxxxxxx> wrote: > On Tue, Oct 02, 2012 at 07:31:43PM +0100, Peter Maydell wrote: >> We probably want to be passing in the "base of the cpu-internal >> peripherals", rather than "base of the GIC" specifically. For the >> A15 these are the same thing, but that's not inherent [compare the >> A9 which has more devices at fixed offsets from a configurable >> base address]. > > If you do that, userspace will need a way to probe the emulated CPU so > that is knows exactly which set of peripherals there are and which ones it > needs to emulate. This feels pretty nasty, given that the vgic is handled > more or less completely by the kernel-side of things. Userspace knows what the emulated CPU is because it tells the kernel which CPU to provide -- the kernel can say "yes" or "no" but it can't provide a different CPU to the one we ask for, or one with bits mising... -- PMM _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
