Re: [Qemu-devel] [PATCH v1 8/8] usb/ehci: Put RAM in undefined MMIO regions

[Avi Kivity]

On 10/25/2012 03:12 PM, Peter Maydell wrote:
>  (2) what should the memory system do for accesses where there is
>  no memory region? This is really system specific as it depends
>  what the bus fabric does. For ARM the usual thing would be to
>  generate a decode error response which will result in the guest
>  CPU taking a data abort or prefetch abort. I don't think our
>  memory system currently has any way of saying "for this access
>  generate an exception"...
> 

You could easily have the top-level container have ->ops that generate
an exception.


>  (3) I don't think "qemu segfaults" is a good response to bad
>  guest behaviour so that needs fixing somehow even if we can't
>  model what the h/w does :-)

Right, a stack trace (or a patch) would be appreciated.

-- 
error compiling committee.c: too many arguments to function