Commit 56109794 authored by Jean-Philippe Brucker's avatar Jean-Philippe Brucker Committed by Joerg Roedel
Browse files

iommu/virtio: Sort reserved regions 



To ease identity mapping support, keep the list of reserved regions
sorted.

Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Signed-off-by: default avatarJean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20211201173323.1045819-4-jean-philippe@linaro.org


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent f0f07a84

drivers/iommu/virtio-iommu.c

+7 −2
Original line number Diff line number Diff line
@@ -423,7 +423,7 @@ static int viommu_add_resv_mem(struct viommu_endpoint *vdev, 
	size_t size;

	u64 start64, end64;

	phys_addr_t start, end;

	struct iommu_resv_region *region = NULL;

	struct iommu_resv_region *region = NULL, *next;

	unsigned long prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO;



	start = start64 = le64_to_cpu(mem->start);
@@ -454,7 +454,12 @@ static int viommu_add_resv_mem(struct viommu_endpoint *vdev, 
	if (!region)

		return -ENOMEM;



	list_add(&region->list, &vdev->resv_regions);

	/* Keep the list sorted */

	list_for_each_entry(next, &vdev->resv_regions, list) {

		if (next->start > region->start)

			break;

	}

	list_add_tail(&region->list, &next->list);

	return 0;

}