Re: [Qemu-devel] [Qemu-discuss] error - Guest has not initialized the display yet.

[Peter Maydell <peter.maydell@linaro.org>]

On 26 March 2015 at 20:31, Mark Cave-Ayland
<mark.cave-ayland@ilande.co.uk> wrote:
> I've just done some testing here and I see exactly the same issue -
> something is preventing OpenBIOS from executing. A quick session with
> git bisect points to the following:
>
>
> c3c1bb99d1c11978d9ce94d1bdcf0705378c1459 is the first bad commit
> commit c3c1bb99d1c11978d9ce94d1bdcf0705378c1459
> Author: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
> Date:   Mon Mar 16 22:35:54 2015 -0700
>
>     exec: Respect as_tranlsate_internal length clamp
>
>     address_space_translate_internal will clamp the *plen length argument
>     based on the size of the memory region being queried. The iommu walker
>     logic in addresss_space_translate was ignoring this by discarding the
>     post fn call value of *plen. Fix by just always using *plen as the
>     length argument throughout the fn, removing the len local variable.
>
>     This fixes a bootloader bug when a single elf section spans multiple
>     QEMU memory regions.
>
>     Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
>     Message-Id:
> <1426570554-15940-1-git-send-email-peter.crosthwaite@xilinx.com>
>     Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>
>
> Reproduction is easy with the command line given below:
>
>   ./qemu-system-ppc -prom-env 'auto-boot?=false'

I feel like we're recapitulating history here -- is
c3c1bb99d undoing the fix that a87f39543a made for when we
tried this a year ago in 360e607, or is there something
more subtle going on ?

-- PMM