Re: [RFC] QEMU KVM target -> Anthony

["Dâniel Fraga" <fragabr-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On Sun, 18 Mar 2007 16:08:21 -0700
"Ed Swierk" <eswierk-t4QvRbHP2kpBDgjK7y7TUQ@public.gmane.org> wrote:

> Please read this email thread if you want to know why your assumption
> is incorrect:
> http://lists.gnu.org/archive/html/qemu-devel/2006-10/msg00175.html

	I read everything. The last message by Paul Brook:

"- qemu makes assumptions about the layout of the code gcc generates.
This works by chance on older gcc. This effects all hosts, and is not a gcc bug.

- qemu reserves several registers for its own use. On architecturally crippled 
hosts (ie. x86) this means we hit really obscure gcc bugs on x86 because gcc 
runs out of registers. This is a gcc bug, but is also relatively easy to 
workaround".

	He even proposes a solution:

https://nowt.dyndns.org/

	And even this way, nobody agreed with each other...

	So I ask: if Paul Brook could fix this, why it isn't merged? A
solution should be applied. What we can't do is keep discussing forever
this and the previous message is realy annoying:

"Basically, gcc changed in a way that broke qemu.  There's been an open
bug report in gcc ever since, but the GCC developers really aren't interested in 
backwards compatability.  (Heck, gcc 4.0 breaks building bash 2.05b).  The 
qemu developers aren't interested in applying ugly patches to support gcc 4.x 
until gcc 3.x becomes so obsolete nobody ships it anymore.  (And considering 
that there are still some niche embedded boards that have hacked up versions 
of gcc 2.95 targeting them and nothing else, I wouldn't be surprised if in 
five years we have your main compiler and the compiler to build qemu, ala 
kgcc under Red Hat 7.  *shrug*)"

	It's like saying: "we don't care. Keep using gcc3". :(

-- 
http://u-br.net
Linux 2.6.20: Homicidal Dwarf Hamster
gcc (GCC) 4.1.2


-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV