[Spice-devel] "qxl: add optinal 64bit vram bar" patch significantly slows down Spice

[Avi Kivity]

On 04/16/2012 03:02 PM, Hans de Goede wrote:
>
> Could it be that the patch somehow causes seabios and/or Xorg to
> see the region as different wrt being cachable / uncachable or
> some such?

In general we ignore cacheability in kvm.  Most likely a but in the
memory core caused the region to be interpreted as mmio instead of RAM,
so every access costs a few microseconds to trap and emulate.

-- 
error compiling committee.c: too many arguments to function