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This fixes the regression introduced by commit42590a7501("x86/agp: Fix agp_amd64_init and agp_amd64_cleanup"). The commit61684ceaadfixed the above regression but it's not enough. When amd64-agp is built as a module, AGP isn't initialized, iommu is initialized, all the aperture is owned by the iommu. Reported-by: Marin Mitov <mitov@issp.bas.bg> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by: Marin Mitov <mitov@issp.bas.bg> LKML-Reference: <20100204090802S.fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>