Re: [Qemu-devel] QEMU Roadmap for 2009 -- Status

[Martin Mohring]

Miklos Vajna wrote:
> On Mon, Dec 15, 2008 at 12:18:17PM -0600, Prince Riley <address@hidden> wrote:
>   
>> Current QEMU limitations:
>>
>>    - No SSE/MMX support (yet).
>>    - No x86-64 support.
>>    - IPC syscalls are missing.
>>     
Kirill A. Shutemov sent patches for most IPC calls in user mode, but
only a few were accepted for some unknown to me reason.
>>    - The x86 segment limits and access rights are not tested at every memory
>>    access (yet). Hopefully, very few OSes seem to rely on that for normal 
>> use.
>>    - On non x86 host CPUs, doubles are used instead of the non standard 10
>>    byte long doubles of x86 for floating point emulation to get maximum
>>    performances.
>>     
>
> I don't know if this fits in this list or not, but given that user mode
> emulation supports NPTL only on arm/sh, most of today's binaries (think
> or a shell, for example) can't be run.
>   
They do in fact not run powerpc in user mode. To run modern powerpc
binaries, also two other missing syscalls are needed.
> I think this would be really nice to have on common targets like x86 or
> PPC.
>   
yes, definititely.

Martin