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iommu: export iommu_area_reserve helper function

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x86 has set_bit_string() that does the exact same thing that
set_bit_area() in lib/iommu-helper.c does.

This patch exports set_bit_area() in lib/iommu-helper.c as
iommu_area_reserve(), converts GART, Calgary, and AMD IOMMU to use it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori
2008-09-22 22:35:07 +09:00
committed by Ingo Molnar
parent 832a90c304
commit d26dbc5cf9
5 changed files with 6 additions and 6 deletions
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arch/x86/kernel/amd_iommu.c
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@@ -572,7 +572,7 @@ static void dma_ops_reserve_addresses(struct dma_ops_domain *dom,
if (start_page + pages > last_page)
pages = last_page - start_page;
set_bit_string(dom->bitmap, start_page, pages);
iommu_area_reserve(dom->bitmap, start_page, pages);
}
static void dma_ops_free_pagetable(struct dma_ops_domain *dma_dom)