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    SubjectRe: [PATCH] iommu/intel: Fix build failure with intel-gtt and !intel-iommu
    On Fri, 2011-11-11 at 14:48 +0100, Joerg Roedel wrote:
    > +#define intel_iommu_gfx_mapped 1

    That ought to be zero; if the IOMMU code isn't present, it's
    *definitely* not mapped through the IOMMU :)

    But I'm fairly sure this was already noticed and a patch is on its way
    upstream already.

    It's my fault — my original testing patches to expose this information
    from the IOMMU code did put it into a header file, but when I sent it
    upstream I missed that part of the patch, thus leading to the horrid
    'extern int intel_iommu_gfx_mapped;' in intel-gtt.c that your patch

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