Re: [regression] commit 6a4f3b52 causes invalid memtype

[Xiaotian Feng <dfeng@redhat.com>]

On 07/05/2010 03:51 PM, Ali Gholami Rudi wrote:
> Hi,
>
> In -rc4 kernel these messages appear in my dmesg (complete dmesg
> at the end of this mail):
>
> 	[    0.400777] swapper:1 freeing invalid memtype e0000000-e0040000
> 	...
> 	[    0.453489] swapper:1 freeing invalid memtype e0000000-e0010000
> 	[    0.453585] swapper:1 freeing invalid memtype e0041000-e0045000
> 	[    0.453673] swapper:1 freeing invalid memtype e0045000-e0049000
> 	...
> 	[   12.662571] fbpad:980 conflicting memory types e0049000-e0549000 uncached-minus<->write-combining
> 	[   12.662579] reserve_memtype failed 0xe0049000-0xe0549000, track uncached-minus, req uncached-minus
> 	[   13.303389] fbpad:980 map pfn expected mapping type uncached-minus for e0049000-e0549000, got write-combining
>
> The last 3 lines appear when mmap()ing nouveau framebuffer.
>
> I reverted this commit and everything seems ok once more:
>
> 	commit 6a4f3b523779b67e7d560ed42652f8a59f2f9782
> 	Author: Venkatesh Pallipadi<venki@google.com>
> 	Date:   Thu Jun 10 17:45:01 2010 -0700
> 	
> 	    x86, pat: Proper init of memtype subtree_max_end
>
> Thanks,
> Ali

Could you please try following commit in -tip tree?

commit 2463eb8b3093995e09a0d41b3d78ee0cf5fb4249
Author: Peter Zijlstra <peterz@infradead.org>
Date:   Sat May 29 15:31:43 2010 +0200

     rbtree: Undo augmented trees performance damage

Thanks
Xiaotian