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amd-iommu: disable device isolation with CONFIG_IOMMU_STRESS

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

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-05-22 12:44:03 +02:00
parent 2be69c79e9
commit 2e8b569614
1 changed files with 6 additions and 0 deletions
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6
arch/x86/kernel/amd_iommu_init.c
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@ -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