[Qemu-devel] Re: [CFT PATCH 00/12] Tricky parts of my iothread-for-win32 stuff

[Jan Kiszka <jan.kiszka@web.de>]

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On 2011-02-08 18:18, Paolo Bonzini wrote:
> Ok, so let's start the dance...
> 
> These are the generic parts of the iothread-for-win32 work I made
> last year, rebased to today's qemu (qemu-kvm.git/uq/master merged
> with qemu.git/master, because it conflicts with some patches from Jan).

More breakage to come :). But that can be sorted out.

> I never tested them too much, and that's one of the reasons why I never
> submitted the stuff.  Perhaps with some help they can make it this time.
> 
> Testing I made now is still a bit limited, but the patches can boot
> RHEL and Fedora under both Windows iothread and Linux iothread.  FWIW,
> under Wine I need iothread to boot Linux.
> 
> The main idea is to replace timedwaits with waits.  First because the
> timedwaits were such only out of laziness; second because timedwait
> is a pain to implement for Win32 where we have to manually implement
> condvars.

I bet that timed polling was just to work around early fragility of the
iothread code /wrt TCG. qemu-kvm does not poll either (but uses an
"interesting" mixture of !IOTHREAD and private code instead...). The
conversion makes sense, though I haven't looked at every detail.

Jan


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