diff options
| author | David Woodhouse <dwmw2@infradead.org> | 2008-09-04 09:54:37 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-05 20:20:25 +0200 |
| commit | e51af6630848406fc97adbd71443818cdcda297b (patch) | |
| tree | 6f25c35ad2a264e2ca8ad9bf0a4f8d2ac72d7a0c /include/asm-x86/iommu.h | |
| parent | cf169702ba6928cee9d4f4adf3e932b643b8db7a (diff) | |
x86: blacklist DMAR on Intel G31/G33 chipsets
Some BIOSes (the Intel DG33BU, for example) wrongly claim to have DMAR
when they don't. Avoid the resulting crashes when it doesn't work as
expected.
I'd still be grateful if someone could test it on a DG33BU with the old
BIOS though, since I've killed mine. I tested the DMI version, but not
this one.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/iommu.h')
| -rw-r--r-- | include/asm-x86/iommu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86/iommu.h b/include/asm-x86/iommu.h index 5f888cc5be4..621a1af94c4 100644 --- a/include/asm-x86/iommu.h +++ b/include/asm-x86/iommu.h @@ -6,6 +6,7 @@ extern void no_iommu_init(void); extern struct dma_mapping_ops nommu_dma_ops; extern int force_iommu, no_iommu; extern int iommu_detected; +extern int dmar_disabled; extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len); |