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Commit 7c3c9876 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

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: default avatarZhenHua Li <zhen-hual@hp.com>
Tested-by: default avatarBaoquan He <bhe@redhat.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent af3b358e

drivers/iommu/intel_irq_remapping.c

+10 −0
Original line number Diff line number Diff line
@@ -451,6 +451,7 @@ static int iommu_load_old_irte(struct intel_iommu *iommu) 
{

	struct irte *old_ir_table;

	phys_addr_t irt_phys;

	unsigned int i;

	size_t size;

	u64 irta;
@@ -481,6 +482,15 @@ static int iommu_load_old_irte(struct intel_iommu *iommu) 


	__iommu_flush_cache(iommu, iommu->ir_table->base, size);



	/*

	 * Now check the table for used entries and mark those as

	 * allocated in the bitmap

	 */

	for (i = 0; i < INTR_REMAP_TABLE_ENTRIES; i++) {

		if (iommu->ir_table->base[i].present)

			bitmap_set(iommu->ir_table->bitmap, i, 1);

	}



	return 0;

}