From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arvind R <arvino55@gmail.com>
Subject: Re: [Patch RFC] ttm: nouveau accelerated on Xen pv-ops
	kernel
Date: Fri, 12 Mar 2010 10:57:58 +0530
Message-ID: <d799c4761003112127o29b76177r9fbbaf4ddc8e644@mail.gmail.com>
References: <d799c4761003100521h663c82eepda85f3f0309828c2@mail.gmail.com>
	<20100311130258.49dc04bd@farn>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <20100311130258.49dc04bd@farn>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Pekka Paalanen <pq@iki.fi>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

On Thu, Mar 11, 2010 at 4:32 PM, Pekka Paalanen <pq@iki.fi> wrote:
> I'm adding dri-devel@ to CC, since this suggested patch touches
> TTM code, and none of the Nouveau code. TTM patches go via
> dri-devel@.
>
> Thanks.
>
>
> On Wed, 10 Mar 2010 18:51:21 +0530
> Arvind R <arvino55@gmail.com> wrote:
>
>> Hi,
>> Following is a simple patch that is needed in nouveau to get
>> accelerated X on a Xen dom0 pv_ops kernel. The kernel is jeremy's
>> 2.6.31.6 as of 20100222. The whole gpu tree of nouveau (which is
>> almost the mainline merge), was substituted into the kernel-tree.
>> All components of X (mesa, Xorg-server-7.5, xf86-nouveau, libdrm)
>> used of the same day.
>>
>> Patch:
>> diff -Naur nouveau-kernel.orig/drivers/gpu/drm/ttm/ttm_bo_vm.c
>> nouveau-kernel.new/drivers/gpu/drm/ttm/ttm_bo_vm.c
>> --- nouveau-kernel.orig/drivers/gpu/drm/ttm/ttm_bo_vm.c 2010-01-27
>> 10:19:28.000000000 +0530
>> +++ nouveau-kernel.new/drivers/gpu/drm/ttm/ttm_bo_vm.c =A02010-03-10
>> 17:28:59.000000000 +0530
>> @@ -271,7 +271,10 @@
>> =A0 =A0 =A0 =A0 =A0*/
>>
>> =A0 =A0 =A0 =A0 vma->vm_private_data =3D bo;
>> - =A0 =A0 =A0 vma->vm_flags |=3D VM_RESERVED | VM_IO | VM_MIXEDMAP |
>> VM_DONTEXPAND;
>> + =A0 =A0 =A0 vma->vm_flags |=3D VM_RESERVED | VM_MIXEDMAP |
>> VM_DONTEXPAND;
>> + =A0 =A0 =A0 if (!((bo->mem.placement & TTM_PL_MASK_MEM) &
>> TTM_PL_FLAG_TT))
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 vma->vm_flags |=3D VM_IO;
>> + =A0 =A0 =A0 vma->vm_page_prot =3D vma_get_vm_prot(vma->vm_flags);
>> =A0 =A0 =A0 =A0 return 0;
>> =A0out_unref:
>> =A0 =A0 =A0 =A0 ttm_bo_unref(&bo);
>>
Sorry for the typo: in the last added line,
vma_get_vm_prot(vma->vm_flags) should be vma->vm_get_page_prot(vma->vm_flag=
s)

Arvind