intel-iommu: Clean up identity mapping code, remove CONFIG_DMAR_GFX_WA

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There's no need for the GFX workaround now we have 'iommu=pt' for the
cases where people really care about performance. There's no need to
have a special case for just one type of device.

This also speeds up the iommu=pt path and reduces memory usage by
setting up the si_domain _once_ and then using it for all devices,
rather than giving each device its own private page tables.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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This commit is contained in:

David Woodhouse 2009-06-26 19:10:36 +01:00

parent b213203e47

commit c7ab48d2ac

2 changed files with 34 additions and 88 deletions

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15

arch/x86/Kconfig

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107

drivers/pci/intel-iommu.c

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