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Commit 2e8b5696 authored by Joerg Roedel's avatar Joerg Roedel
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amd-iommu: disable device isolation with CONFIG_IOMMU_STRESS 



With device isolation disabled we can test better for race conditions in
dma_ops related code.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 2be69c79

arch/x86/kernel/amd_iommu_init.c

+6 −0
Original line number Diff line number Diff line
@@ -124,8 +124,14 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have 
LIST_HEAD(amd_iommu_unity_map);		/* a list of required unity mappings

					   we find in ACPI */

unsigned amd_iommu_aperture_order = 26; /* size of aperture in power of 2 */



#ifdef CONFIG_IOMMU_STRESS

bool amd_iommu_isolate = false;

#else

bool amd_iommu_isolate = true;		/* if true, device isolation is

					   enabled */

#endif



bool amd_iommu_unmap_flush;		/* if true, flush on every unmap */



LIST_HEAD(amd_iommu_list);		/* list of all AMD IOMMUs in the