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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#ifndef _DMA_REMAPPING_H
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#define _DMA_REMAPPING_H
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/*
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* VT-d hardware uses 4KiB page size regardless of host page size.
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*/
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#define VTD_PAGE_SHIFT (12)
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#define VTD_PAGE_SIZE (1UL << VTD_PAGE_SHIFT)
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#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
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#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
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#define VTD_STRIDE_SHIFT (9)
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#define VTD_STRIDE_MASK (((u64)-1) << VTD_STRIDE_SHIFT)
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#define DMA_PTE_READ (1)
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#define DMA_PTE_WRITE (2)
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#define DMA_PTE_LARGE_PAGE (1 << 7)
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#define DMA_PTE_SNP (1 << 11)
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#define CONTEXT_TT_MULTI_LEVEL 0
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#define CONTEXT_TT_DEV_IOTLB 1
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#define CONTEXT_TT_PASS_THROUGH 2
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/* Extended context entry types */
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#define CONTEXT_TT_PT_PASID 4
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#define CONTEXT_TT_PT_PASID_DEV_IOTLB 5
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#define CONTEXT_TT_MASK (7ULL << 2)
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#define CONTEXT_DINVE (1ULL << 8)
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#define CONTEXT_PRS (1ULL << 9)
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#define CONTEXT_PASIDE (1ULL << 11)
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struct intel_iommu;
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struct dmar_domain;
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struct root_entry;
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#ifdef CONFIG_INTEL_IOMMU
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extern int iommu_calculate_agaw(struct intel_iommu *iommu);
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extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
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extern int dmar_disabled;
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extern int intel_iommu_enabled;
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#else
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static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
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{
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return 0;
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}
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static inline int iommu_calculate_max_sagaw(struct intel_iommu *iommu)
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{
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return 0;
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}
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#define dmar_disabled (1)
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#define intel_iommu_enabled (0)
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#endif
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#endif
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