Re: [Xen-devel] [PATCH v4] VT-d: add iommu=igfx option to workaround graphics issues

2015-08-06 Thread Ian Campbell
On Thu, 2015-08-06 at 09:25 +0100, Wei Liu wrote: > On Thu, Aug 06, 2015 at 12:49:51AM +, Tian, Kevin wrote: > > > From: Ting-Wei Lan [mailto:lant...@gmail.com] > > > Sent: Thursday, August 06, 2015 1:10 AM > > > > > > When using Linux >= 3.19 (commit 47591df) as dom0 on some Intel > > > Iron

Re: [Xen-devel] [PATCH v4] VT-d: add iommu=igfx option to workaround graphics issues

2015-08-06 Thread Wei Liu
On Thu, Aug 06, 2015 at 12:49:51AM +, Tian, Kevin wrote: > > From: Ting-Wei Lan [mailto:lant...@gmail.com] > > Sent: Thursday, August 06, 2015 1:10 AM > > > > When using Linux >= 3.19 (commit 47591df) as dom0 on some Intel Ironlake > > devices, It is possible to encounter graphics issues that

Re: [Xen-devel] [PATCH v4] VT-d: add iommu=igfx option to workaround graphics issues

2015-08-05 Thread Tian, Kevin
> From: Ting-Wei Lan [mailto:lant...@gmail.com] > Sent: Thursday, August 06, 2015 1:10 AM > > When using Linux >= 3.19 (commit 47591df) as dom0 on some Intel Ironlake > devices, It is possible to encounter graphics issues that make screen > unreadable or crash the system. It was reported in freede

[Xen-devel] [PATCH v4] VT-d: add iommu=igfx option to workaround graphics issues

2015-08-05 Thread Ting-Wei Lan
When using Linux >= 3.19 (commit 47591df) as dom0 on some Intel Ironlake devices, It is possible to encounter graphics issues that make screen unreadable or crash the system. It was reported in freedesktop bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90037 As we still cannot find a prop