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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-11-17 15:09:20 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2008-11-18 15:44:31 +0100 |
| commit | 3ce1f93c6d53c3f91c3846cf66b018276c8ac2e7 (patch) | |
| tree | b6dd5e06c031f03aa7c81da818e90c52569707f9 /arch/x86/kernel | |
| parent | e5e1f606ecbf67e52ebe2df5d14f8b94ec6544d0 (diff) | |
| download | blackbird-op-linux-3ce1f93c6d53c3f91c3846cf66b018276c8ac2e7.tar.gz blackbird-op-linux-3ce1f93c6d53c3f91c3846cf66b018276c8ac2e7.zip | |
AMD IOMMU: enable device isolation per default
Impact: makes device isolation the default for AMD IOMMU
Some device drivers showed double-free bugs of DMA memory while testing
them with AMD IOMMU. If all devices share the same protection domain
this can lead to data corruption and data loss. Prevent this by putting
each device into its own protection domain per default.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 838a2e1d5bb2..595edd2befc6 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -121,7 +121,7 @@ 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 */ -int amd_iommu_isolate; /* if 1, device isolation is enabled */ +int amd_iommu_isolate = 1; /* if 1, device isolation is enabled */ bool amd_iommu_unmap_flush; /* if true, flush on every unmap */ LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the |
