[Udpcast] UDP Cast ready-made boot images and i686 issues

[Alain Knaff]

Henrique Rodrigues wrote:
> On Mon, January 19, 2009 17:39, Alain Knaff wrote:
>> Henrique Rodrigues wrote:
>>> Hello,
>>>
>>> I've been using UDP Cast extensively for a while now and I love it, but
>>> I
>>> had an issue last week and I want to share it witou you.
>>>
>>> The UDP Cast website provides handy ready-made boot images. Apparently,
>>> those images are compiled for i686 and I couldn't make them work on an
>>> older machine because the processor doesn't implement the CMOV
>>> operation.
>>> The problem seem to belong to GCC, because it thinks that every i686
>>> processor implements the optional CMOV operation, which is not true.
>>>
>>> I solved the problem by compiling my own UDP Cast kernel, but I suggest
>>> that the next UDP Cast ready-made boot images drop the i686 requirement
>>> and stick to i386, for compatibility reasons.
>>>
>>> Is this a reasonable request?
>>>
>>> Thank you and best regards,
>>>
>>> Henrique Rodrigues
>>>
>> I'll take note of this for the next release
>>
>> Alain
> 
> 
> Hello,
> 
> I just want to remind that this is still a problem. The issue can be
> reproduced with QEMU. Example:
> 
> $ qemu -cpu 486 -boot d -cdrom /home/hmr/udpcd.iso
> 
> With my custom kernel, compiled for i386, it works fine.
> 
> Best regards,
> Henrique Rodrigues
> 

This is now fixed with the new 2.6.31 kernel in 20091031. There is some
memory issue however (needs 192 Megs in qemu/kvm), which will be
hopefully addressed in the next version.

Regards,

Alain