-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 13/04/12 12:45, Steven Newbury wrote: > On Fri, 13 Apr 2012, 09:26:55 BST, Yinghai Lu <yinghai@xxxxxxxxxx> > wrote: > >> On Thu, Apr 12, 2012 at 9:40 AM, Steven Newbury >> <steve@xxxxxxxxxxxxxxx> wrote: >>>>> >>>>> It would be useful to preserve as much low PCI memory >>>>> address space as possible for hotplug devices (like my >>>>> Radeon), but the other problem is small regions get >>>>> allocated at the bottom, resulting in the inability to find >>>>> large aligned regions later on. I see code to default to >>>>> top-down allocation was reverted, I guess I'm going to have >>>>> to dig into the archive to find out why... >> >> Please check attached patches that will find_resource with fit. >> It may leave space for your hotplug devices. >> >> PCI: Should add children device res to fail list PCI: Try to >> allocate mem64 above 4G at first intel-gtt: Read 64bit for >> gmar_bus_addr PCI: Make sure assign same align with large size >> resource at first resource: make find_resource could return just >> fit resource PCI: Don't allocate small resource in big empty >> space. resource: only return range with needed align >> >> You can get them from >> >> >> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git >> >> for-pci-res-alloc > > I pulled this in on top of a branch with any of the prior PCI > patches since they conflict anyway. > > It's not stable, crashes soon after GMA comes up. (Could be > unrelated breakage in linus/master? Probably not but I will > verify.) I noticed the high allocations are occuring from the top > of 64-bit address-space, whilst /proc/cpuinfo shows only 48 bits of > virtual addressing. Could that be why..? To reply to myself again, I should have said crashes shortly after Xorg initialises using the intel driver, in both cases! I'm building a kernel now without the patch set to see if it's unrelated. If it still dies I'll try applying your patch set to a branch without the changes from linus/master... (should have done that anyway...) > > Also, when not docked GMA still isn't mapped high so there's no > room for the 256M radeon pref mem. > > Attached /proc/iomem output for docked and undocked. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk+IFPcACgkQGcb56gMuC61f9ACfQc9AqY5YVMEDAvdufMkSpg9b cbsAnRm6sA7VGfmzTyOldSJfV6Qt6ea8 =RGn5 -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
