diff options
| author | Jean-Philippe Brucker | 2021-12-01 17:33:23 +0000 |
|---|---|---|
| committer | Joerg Roedel | 2021-12-06 15:03:05 +0100 |
| commit | 5610979415649f3743a7c3de03ab46c9a3bfff16 (patch) | |
| tree | 29a5494191ae089f4c3d68e3fbac9f10be18cf20 /drivers/iommu | |
| parent | f0f07a8462dc2a889745b9e436b4d86d66ccc787 (diff) | |
iommu/virtio: Sort reserved regions
To ease identity mapping support, keep the list of reserved regions
sorted.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20211201173323.1045819-4-jean-philippe@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/virtio-iommu.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c index 14dfee76fd19..1b3c1f2741c6 100644 --- a/drivers/iommu/virtio-iommu.c +++ b/drivers/iommu/virtio-iommu.c @@ -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(®ion->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(®ion->list, &next->list); return 0; } |