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Date: Fri, 11 Oct 2013 10:44:09 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] PPC: Timer issues with git master
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To: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: "qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>, qemu-devel <qemu-devel@nongnu.org>, alex@alex.org.uk, Alexander Graf <agraf@suse.de>

Il 11/10/2013 00:27, Mark Cave-Ayland ha scritto:
> 
> I've just upgraded my git repository from around the 1.6 release
> timeframe to git master and I'm seeing some strange timing issues
> running through my OpenBIOS test suite which weren't there before my git
> update.
> 
> The two most noticeable changes are in FreeBSD and HelenOS; the
> countdown timer in the FreeBSD bootloader used to count down in seconds
> whereas now it whizzes down to zero, and HelenOS now takes a very very
> long time to boot.
> 
> In order to reproduce from git master download the appropriate ISOs and
> launch QEMU like this:
> 
> ./qemu-system-ppc -cdrom
> /home/build/src/qemu/image/ppc/FreeBSD-9.1-RC2-powerpc-release.iso -M
> mac99 -m 512 -boot d
> 
> ./qemu-system-ppc -cdrom
> /home/build/src/qemu/image/ppc/HelenOS-0.4.2-ppc32.iso -m 512 -boot d
> 
> Paulo/Alex B - I know you've been working with timers, so wondered if
> this is related to some of the changes you've been making? I've also
> copied Alex Graf in case this is somehow related to how the timer code
> interacts with the PPC timebase-frequency.

Can you bisect them?

Paolo