From: Joerg Roedel Date: Fri, 22 May 2009 10:44:03 +0000 (+0200) Subject: amd-iommu: disable device isolation with CONFIG_IOMMU_STRESS X-Git-Tag: firefly_0821_release~13675^2~13^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2e8b569614b89c9b1b85cba37db36daeeeff744e;p=firefly-linux-kernel-4.4.55.git 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: Joerg Roedel --- diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index b90a78cfdcb8..66941129e9c7 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -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