On Fri, Jul 10, 2009 at 11:18:21AM -0500, James Bottomley wrote: > On Fri, 2009-07-10 at 11:55 -0400, John David Anglin wrote: ... > > Your comment would explain why I > > don't see this on c3750. Could this affect PA8700? > > In theory it would affect every box running a 64 bit kernel. Yes, regarding corrupting bit-44 but not U-bit. IIRC, only pa880 and pa8900 pay attention to the U-bit. I thought all the previous CPUs ignored U-bit. > We > actually set PAGE_NO_CACHE on ioremaps(), so it's spreading out from the > PCI device space. Yes - but only ZX1 chipset (e.g. rp3440 and C8000) uses IO space that is outside of F-space. F-space is hardwired to be uncachable by the CPU. hth, grant -- 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
