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[Qemu-devel] Re: Main loop


From: malc
Subject: [Qemu-devel] Re: Main loop
Date: Mon, 28 Sep 2009 14:19:01 +0400 (MSD)

On Mon, 28 Sep 2009, Juan Quintela wrote:

> malc <address@hidden> wrote:
> > On Mon, 28 Sep 2009, Juan Quintela wrote:
> >
> >> malc <address@hidden> wrote:
> >> > At http://repo.or.cz/w/qemu/malc.git?a=shortlog;h=refs/heads/mtloop you
> >> > can find the branch which refactors main execution loop somewhat, effects
> >> > include:
> >> >
> >> > a. Host alarm timers are gone
> >> > b. IO thread is replaced (now Windows is supported too)
> >> >
> >> > I have no means of testing the KVM/Xen bits (both are likely to be broken
> >> > by this), and since testing was only done on Linux/X86-64[1],PPC and 
> >> > Windows/i386 chances are good that something might be not so great in
> >> > BSD/Solairs/MacOS X lands.
> >> 
> >> No cookie:
> >> It don't work in kvm mode.
> 
> > Didn't i say that i have no means of testing it? Even x86 box yields:
> 
> I read it as that you wanted people to test it :p

I must have expressed myself poorly, what was meant:
KVM/Xen are quite lilely broken (truth)
I have no means of testing _and_ fixing it
Testing _without_ those is nice, fixing those is better still

> 
> > ~$ uname -a
> > Linux laptop 2.6.31 #7 SMP PREEMPT Sun Sep 13 10:59:44 MSD 2009 x86_64 AMD 
> > Athlon(tm)64 X2 Dual Core Processor  3800+ AuthenticAMD GNU/Linux
> > ~$ egrep '^flags.*(vmx|svm)' /proc/cpuinfo 
> > ~$
> >
> > Help is needed with that.
> 
> on the "I like side" of the patch:
> - timers (clocks or whatever) are gone!!!!!
> - differences beteween io_thread/no io_thread also gone
> - pthread wrappers are gone
> on the "I don't like"
> - calling "minor refactoring" to a single patch that remove all the
>   clocks, remove io thread, remove pthread wrappers, and some other
>   things in one go

grumble, grubmble

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