From: "Max Dmitrichenko" <dmitrmax@xxxxxxxxx> Date: Fri, 31 Oct 2008 16:09:48 +0300 Please post sparc patches to the sparclinux mailing list, CC:'d > There is a problem discovered in recent versions of ATI Mach64 driver > in X.org on sparc64 architecture. In short, the driver fails to mmap > MMIO aperture (PCI resource #2). > > I've found that kernel's __pci_mmap_make_offset() returns EINVAL. It > checks whether user attempts to mmap more than the resource length, > which is 0x1000 bytes in our case. But PAGE_SIZE on SPARC64 is 0x2000 > and this is what actually is being mmaped. So __pci_mmap_make_offset() > failed for this PCI resource. > > Signed-off-by: Max Dmitrichenko <dmitrmax@xxxxxxxxx> > > Code seems to be rather old. At least it was the same in 2.6.24. I > have no explanation why this bug exposed only now. May be before X.org > used to use some other method to mmap PCI resource into userspace (now > it uses libpciaccess). > > The patch is against 2.6.26. Greg, please consider to include it into > the stable trees. No, the sparc maintainer (that's me) will submit this patch to -stable if it is correct and appropriate. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
