On 2011-08-25 09:19, Avi Kivity wrote: > On 08/22/2011 08:12 PM, Jan Kiszka wrote: >> Most VGA memory access modes require MMIO handling as they demand weird >> logic to get a byte from or into the video RAM. However, there is one >> exception: chain 4 mode with all memory planes enabled for writing. This >> mode actually allows lineary mapping, which can then be combined with >> dirty logging to accelerate KVM. >> >> This patch accelerates specifically VBE accesses like they are used by >> grub in graphical mode. Not only the standard VGA adapter benefits from >> this, also vmware and spice in VGA mode. >> >> > > On which version of grub does this work? This isn't having any effect > on my Fedora grub.
It's both grub1 (0.97) in graphical mode as used by OpenSUSE 11.4 and grub2 (1.99-rc1) of Ubuntu 11.04. Is Fedora's grub still slow or was it already fast before? Which Fedora? Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
