Commit 47bccd6b authored May 22, 2009 by Joerg Roedel

amd-iommu: don't free dma adresses below 512MB with CONFIG_IOMMU_STRESS



This will test the automatic aperture enlargement code. This is
important because only very few devices will ever trigger this code
path. So force it under CONFIG_IOMMU_STRESS.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

parent f5e9705c

arch/x86/kernel/amd_iommu.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -824,6 +824,11 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom,

		BUG_ON(i >= APERTURE_MAX_RANGES \|\| range == NULL);

		#ifdef CONFIG_IOMMU_STRESS
		if (i < 4)
		return;
		#endif

		if (address >= dom->next_address)
		dom->need_flush = true;