On Sat, Feb 05, 2005 at 03:27:52PM -0800, David S. Miller wrote: > However, from another perspective it does make some sense. > I only know of a cpu type or two that really provide strong > address space protection for accidental supervisor mode accesses > to user space. I know sparc64 provides this for sure, and I > think parisc has something similar as well.
Yes, we essentially have a 4G/4G split on PA. We rather abuse addr_limit though. I'm not particularly happy with the current uaccess code and it's something I plan to clean up long-term. -- "Next the statesmen will invent cheap lies, putting the blame upon the nation that is attacked, and every man will be glad of those conscience-soothing falsities, and will diligently study them, and refuse to examine any refutations of them; and thus he will by and by convince himself that the war is just, and will thank God for the better sleep he enjoys after this process of grotesque self-deception." -- Mark Twain
