Re: [Qemu-devel] Main loop

[malc <av1474@comtv.ru>]

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On Sun, 27 Sep 2009, Blue Swirl wrote:

> On Sun, Sep 27, 2009 at 2:55 AM, malc <av1474@comtv.ru> 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.
> >
> > Apart from obvious KVM bits, other things were not implemented (yet)
> > either: proper VM stop/resume, GDB, etc.
> >
> > Diffstat relative to c2b023b62707f5dc73497dc03f3764f145a29785 (plus
> > one somewhat unrelated local commit) is bellow.
> >
> >  Makefile        |    1 -
> >  configure       |    8 -
> >  cpu-defs.h      |    2 -
> >  cpu-exec.c      |    3 +
> >  hw/xenfb.c      |    2 +-
> >  qemu-options.hx |    9 -
> >  qemu-thread.c   |  163 ------
> >  qemu-thread.h   |   40 --
> >  sysemu.h        |    2 +-
> >  vl.c            | 1650 ++++++++++++++++++++-----------------------------------
> >  10 files changed, 593 insertions(+), 1287 deletions(-)
> >
> > Comments?
> 
> +extern void ontb (CPUState *env);
> +

It's for local debugging only.

> 
> Please try to avoid prototypes outside header files. The name does not
> tell what the function does.
> 
>      if (delta < MIN_TIMER_REARM_US)
>          delta = MIN_TIMER_REARM_US;
> +    if (delta > MIN_TIMER_REARM_US)
> +        delta = MIN_TIMER_REARM_US;
> 
> The above four lines are equal to
>      delta = MIN_TIMER_REARM_US;
> 
> Maybe the latter two should use MAX_TIMER_REARM_US?
> 

And this is a leftover from local debugging which is already gone:
http://repo.or.cz/w/qemu/malc.git?a=commit;h=f48b6952e1f61ba2fffc1a5bbe06db942b1c0c72
Was trying to find out why -smp N boot times were so slow.

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