Messages in this thread Patch in this message | | | From | Robin Murphy <> | Subject | [PATCH] iommu/iova: Don't try to copy anchor nodes | Date | Mon, 2 Oct 2017 11:53:31 +0100 |
| |
Anchor nodes are not reserved IOVAs in the way that copy_reserved_iova() cares about - while the failure from reserve_iova() is benign since the target domain will already have its own anchor, we still don't want to be triggering spurious warnings.
Reported-by: kernel test robot <fengguang.wu@intel.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- drivers/iommu/iova.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index bd854ca9fa80..c258ba84ee62 100644 --- a/drivers/iommu/iova.c +++ b/drivers/iommu/iova.c @@ -705,6 +705,9 @@ copy_reserved_iova(struct iova_domain *from, struct iova_domain *to) struct iova *iova = rb_entry(node, struct iova, node); struct iova *new_iova; + if (iova->pfn_lo == IOVA_ANCHOR) + continue; + new_iova = reserve_iova(to, iova->pfn_lo, iova->pfn_hi); if (!new_iova) printk(KERN_ERR "Reserve iova range %lx@%lx failed\n", -- 2.13.4.dirty
| |