On Mon, Dec 22, 2008 at 04:43:36PM -0600, James Bottomley wrote: > Actually, it should bug more often. This function: > flush_user_cache_page_non_current() is very rarely called (which is > hopefully why you don't see an increase in bugs). However, this is a > kernel function ... if you call load_context() here, you'll get the user > protection IDs in the register and it will immediately fault when it > returns to the kernel. All it should be doing (which is what it > currently does) is to set up sr3 to allow the kernel to poke into a user > address space, which is the design of the function. > Well, it will work by accident, since the other 3 (or 7) prot id registers will still be zeroed, since we only ever touch %cr8... -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
