On Fri, Oct 20, 2006 at 02:12:11PM -0700, Linus Torvalds wrote: > On Fri, 20 Oct 2006, Russell King wrote: > > Well, looking at do_wp_page() I'm now quite concerned about ARM and COW. > > I can't see how this code could _possibly_ work with a virtually indexed > > cache as it stands. Yet, the kernel does appear to work. > > It really shouldn't need any extra code, exactly because by the time it > hits any page-fault, the caches had better be in sync with the physical > page contents _anyway_ (yes, being virtual, the caches will _duplicate_ > the contents, but since the pages are read-only, that aliasing should be > perfectly fine).
Oh, of course! That explains why it actually works as expected! Thanks for filling back in that bit of swapped-out-years-ago-and-lost information. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
