19 Jan
2009
19 Jan
'09
3:49 p.m.
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
--
Henrique Rodrigues
http://sodki.org
Engenharia Informatica e de Computadores - Instituto Superior Tecnico
19 Jan
19 Jan
4:39 p.m.
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
5:01 p.m.
On Mon, January 19, 2009 16:39, Alain Knaff wrote:
Henrique Rodrigues wrote:
Thank you very much, that will be very helpful.
Best regards,
Henrique Rodrigues
--
Henrique Rodrigues
http://sodki.org
Engenharia Informatica e de Computadores - Instituto Superior Tecnico
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
16 Sep
16 Sep
noon
On Mon, January 19, 2009 17:39, Alain Knaff wrote:
Henrique Rodrigues wrote:
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
--
Henrique Rodrigues
http://sodki.org
Engenharia Informatica e de Computadores - Instituto Superior Tecnico
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
3 Nov
3 Nov
7:15 a.m.
Henrique Rodrigues wrote:
On Mon, January 19, 2009 17:39, Alain Knaff wrote:
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
Henrique Rodrigues wrote:
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
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
4778
days inactive
5066
days old
4 comments
2 participants
participants (2)
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Alain Knaff -
Henrique Rodrigues