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iommu/vt-d: Make sure copied over IR entries are not reused
Walk over the copied entries and mark the present ones as allocated. Tested-by: ZhenHua Li <zhen-hual@hp.com> Tested-by: Baoquan He <bhe@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -451,6 +451,7 @@ static int iommu_load_old_irte(struct intel_iommu *iommu)
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{
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struct irte *old_ir_table;
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phys_addr_t irt_phys;
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unsigned int i;
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size_t size;
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u64 irta;
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@ -481,6 +482,15 @@ static int iommu_load_old_irte(struct intel_iommu *iommu)
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__iommu_flush_cache(iommu, iommu->ir_table->base, size);
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/*
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* Now check the table for used entries and mark those as
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* allocated in the bitmap
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*/
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for (i = 0; i < INTR_REMAP_TABLE_ENTRIES; i++) {
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if (iommu->ir_table->base[i].present)
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bitmap_set(iommu->ir_table->bitmap, i, 1);
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}
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return 0;
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}
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