[sisyphus] IQ: kernel-image-std-smp-2.6.24-alt0.3

[Led]

В сообщении от Wednesday 27 February 2008 16:12:55 вы написали:
> On [Wed, 27.02.2008 15:55], Led wrote:
> > Не знаю из-за этого или нет, но qemu-kvm в сизифе принудительно собран
> > gcc4.1, а не gcc3.4
>
> Этого делать нельзя.
>
> > Could someone please explain the issue with gcc4, please?  Or point me
> > to an existing explanation?
>
> The issue is that gcc4 optimizes better, but this breaks assumptions of
> QEmu.
>
> Example: The basic idea (simplified!) of QEmu is writing C functions which
> implement the instructions of the target CPU. Then, code to be emulated is
> translated by chaining the _compiled_ functions (corresponding to the
> target code) together, but _leaving_ out the return instruction at the end
> of the function (otherwise, the resulting code would return already after
> the first emulated instruction).
>
> Now, gcc4 can produce code with several return instructions (with no
> option to turn that of, as far as I understand). You cannot cut them out,
> and therefore you cannot chain the simple functions.
>
> There seem to be other issues, too, like not being able to correctly link
> the user emulation code, but I am not that sure about it.

qemu-kvm ничего практически не эмулирует, а использует аппаратную 
виртуализацию, поэтому он только для запуска x84_64 и x86_32

-- 
Led