[Intel-gfx] [PATCH] iommu: export no_iommu and dmar_disabled symbols
dwmw2 at infradead.org
Wed Nov 23 21:36:00 CET 2011
On Wed, 2011-11-23 at 16:42 -0200, Eugeni Dodonov wrote:
> Those are needed by the rc6 and semaphores support in i915 driver.
> In i915 driver, we do not enable either rc6 or semaphores on SNB when dmar
> is enabled. So we use those variables to check the io remapping and iommu
This is horrid. In the general case, drivers have no business knowing
this. We need to properly identify what is wrong with this hardware, and
put in a quirk for it — perhaps refusing to enable the IOMMU at all on
the broken chipsets.
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