svn commit: r209371 - in head/sys: amd64/amd64 amd64/include conf dev/acpica i386/i386 i386/include isa kern pc98/cbus sys x86/isa x86/x86

[John Baldwin]

On Monday 21 June 2010 4:08:33 pm Alexander Motin wrote:
> Kostik Belousov wrote:
> > On Sun, Jun 20, 2010 at 09:33:29PM +0000, Alexander Motin wrote:
> >> Author: mav
> >> Date: Sun Jun 20 21:33:29 2010
> >> New Revision: 209371
> >> URL: http://svn.freebsd.org/changeset/base/209371
> >>
> >> Log:
> >>   Implement new event timers infrastructure. It provides unified APIs for
> >>   writing event timer drivers, for choosing best possible drivers by 
machine
> >>   independent code and for operating them to supply kernel with 
hardclock(),
> >>   statclock() and profclock() events in unified fashion on various 
hardware.
> > 
> > This broke QEMU for me. I cannot boot FreeBSD guest under QEMU anymore.
> > QEMU (not FreeBSD kernel) panics with
> > qemu: level-triggered hpet not supported
> > message.
> 
> According to specification, it is not optional. No more cookies!

Why do you even need a level triggered interrupt?  The FSB interrupt is not 
shared with anything else, so it can be edge triggered just fine.  We set all 
MSI interrupts to edge triggered on x86.

-- 
John Baldwin