[SeaBIOS] ohci bulk?
avi at redhat.com
Tue Sep 28 11:35:36 CEST 2010
On 09/28/2010 02:30 AM, Kevin O'Connor wrote:
> On Mon, Sep 27, 2010 at 10:33:49AM -0700, H. Peter Anvin wrote:
> > On 09/27/2010 10:00 AM, Avi Kivity wrote:
> > > What about the ISA DMA engine?
> > >
> > The ISA DMA engine can only access the bottom 16 MiB since it only has
> > 24 address bits.
> > As far as KVM is concerned, if KVM doesn't wish to implement SMM (which
> > really isn't all that hard -- it's pretty much a matter of dumping the
> > state and undumping it on RSM; since SMM code is restricted to the
> > firmware it doesn't necessarily have to be compatible with the native
> > CPU) KVM could simply implement a custom memory-moving device -- which
> > would be faster to boot.
> I didn't think kvm uses ohci today. This issue isn't a problem at all
> with uhci or ehci.
Ok. virtio happens to use PIO so it's safe. lsi53c895a appears to dual
map its registers to both an mmio and io BAR.
We'll probably have a problem with assigned GPUs, but these have their
error compiling committee.c: too many arguments to function
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