I compared the performance of X11 on two otherwise idle machines.
Hardware
Both have
identical mainboards (Aopen i915GMm-hfs),
identical memory and BIOS setup.
Both cpus are Intel Pentium M mobile (Dothan).
One runs at 1.86 Mhz, the other runs at 2.00 MHz
Software
===
1.86 MHz system
The PCI matching cleanup is most welcome and that does appear to be the
least invasive method of not sending invalid render programs and commands
to gen7. Bring on the change!
Driver+backend initialisation is a mess, but that is a much larger
patchset...
-Chris
--
Chris Wilson, Intel Open Source