Hi,
On 17/07/2015 20:05, Ting-Wei Lan wrote:
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 proper fix for this problem, this patch adds
iommu=igfx_off option that is similar to Linux intel_iommu=igfx_off for
users to manually workaround the problem.
I would prefer to see the introduction of intel_iommu parameter in the
vtd code rather than extending again the iommu parameter with intel
specific options in the common code which is both for ARM and x86.
Regards,
--
Julien Grall
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