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intel-iommu: Kill DMAR_BROKEN_GFX_WA option.

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Just make it depend on BROKEN for now, in case people scream really loud
about it (and because we might want to keep some of this logic for an
upcoming BIOS workaround, so I don't just want to rip it out entirely
just yet). But for graphics devices, it really ought to be unnecessary.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-09-19 09:37:23 -07:00
parent 64de5af000
commit 0c02a20ff7
2 changed files with 2 additions and 6 deletions
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6
Documentation/Intel-IOMMU.txt
View file

@ -56,11 +56,7 @@ Graphics Problems?
------------------
If you encounter issues with graphics devices, you can try adding
option intel_iommu=igfx_off to turn off the integrated graphics engine.
If it happens to be a PCI device included in the INCLUDE_ALL Engine,
then try enabling CONFIG_DMAR_GFX_WA to setup a 1-1 map. We hear
graphics drivers may be in process of using DMA api's in the near
future and at that time this option can be yanked out.
If this fixes anything, please ensure you file a bug reporting the problem.
Some exceptions to IOVA
-----------------------

2
arch/x86/Kconfig
View file

@ -1916,7 +1916,7 @@ config DMAR_DEFAULT_ON
config DMAR_BROKEN_GFX_WA
def_bool n
prompt "Workaround broken graphics drivers (going away soon)"
depends on DMAR
depends on DMAR && BROKEN
---help---
Current Graphics drivers tend to use physical address
for DMA and avoid using DMA APIs. Setting this config