[SeaBIOS] [PATCH] KVM vcpu hotplug seabios infrastructure

Kevin O'Connor kevin at koconnor.net
Fri Jul 9 02:31:14 CEST 2010

On Thu, Jul 08, 2010 at 08:52:19PM +0800, Liu, Jinsong wrote:
> Kevin O'Connor wrote:
> > I've also noticed this patch increases the seabios build size by 18K.
> > This isn't great because it is 18K that then can't be used by option
> > roms, and it brings seabios very close to its current 128K limit (124K
> > when full debugging enabled).
> Can the limitation 128K be increased?

Now that qemu doesn't directly place option roms in the c/d segments,
it can probably be increased to 256K.  I don't know if qemu changes
would be needed (it doesn't seem like it).  Expanding beyond 256K
would be a bit of work.

The limit due to option roms is more restrictive.  The rom space (at
least on FC13) for vgabios, e1000 gpxe, and vapic comes to 116.5KiB -
add another 8KiB for additional gpxe roms and we're basically back to
the 128KiB limit.


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