Ralf Baechle wrote: > On Tue, Oct 10, 2006 at 06:04:53PM +0200, Franck Bui-Huu wrote: > >> ok, and does the trick on KSEG0/XKPHYS really worth ? I mean what is >> the size code gain ? > > Gcc / gas generate a 6 instruction sequence to load something from a > 64-bit address, basically lui, add, dsll16, add, dsll16, add. It's > just 2 instructions for 32-bit addresses. This boils down to space > savings in the hundred of kilobytes for a kernel. > ok, the hack seems to worth it... Franck
