Jivin Ralf Baechle lays it down ... > On Wed, Nov 22, 2006 at 12:31:10PM -0800, Trevor Hamm wrote: > > > The source of the problem seems to be with squashfs. When I compare booting a kernel using squashfs to one using cramfs (which always seems to boot successfully on power-up), both are reading the troublesome page from /lib/ld-uClibc.so, and both are calling flush_dcache_page() on this page. But in the case of cramfs, flush_dcache_page() causes an immediate cache flush of that page (mapping_mapped(mapping) in __flush_dcache_page() is returning non-zero), while squashfs just marks the page as dirty and defers the cache flush (mapping_mapped(mapping) is returning zero). I have no idea what causes this difference in behaviour, but right now it appears to be a bug in squashfs rather than the linux-mips kernel. > > There are a few other potencial and real bugs me and Atsushi have found > in squashfs. Guess there is a reason why it's not yet in the kernel ... > I'm still waiting for feedback from the squashfs author. Not sure if it helps much, but we run squashfs (with 7zip patch) on ARM9, ARM10, SuperH and x86 without problems. I haven't had any issues with it so far on the au1500 either, Cheers, Davidm -- David McCullough, david_mccullough@xxxxxxxxxxxxxxxxxxx, Ph:+61 734352815 Secure Computing - SnapGear http://www.uCdot.org http://www.cyberguard.com
