On Tue, Oct 27, 2009 at 08:37:09PM -0700, David Miller wrote: > On sparc64, in order to make debugging easier, we trap any time > the kernel does a userspace access to a compat task and any > of the upper 32-bits are non-zero.
Interesting. That definitely means Dave needs a special path. > > However some architectures need special operations on compat pointers > > (s390 iirc), but if you don't support those it might be reasonable > > to not support that. > > s390 has to sign extend all 32-bit compat process pointers when > processing them in the 64-bit s390 kernel. I think one other > architecture has this kind of situation too. Which other architure? I reviewed all the definitions in tree and don't see any other than s390 doing magic there. -Andi -- a...@linux.intel.com -- Speaking for myself only. ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
