From: Robin Murphy Date: Mon, 2 Oct 2017 10:53:31 +0000 (+0100) Subject: iommu/iova: Don't try to copy anchor nodes X-Git-Tag: v4.19~2208^2^5~1^6~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=abbb8a09384f69f7bb05936879e51933c146afba;p=platform%2Fkernel%2Flinux-rpi.git iommu/iova: Don't try to copy anchor nodes 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 Signed-off-by: Robin Murphy Fixes: bb68b2fbfbd6 ('iommu/iova: Add rbtree anchor node') Signed-off-by: Joerg Roedel --- diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index b0ca236..3aee64b 100644 --- a/drivers/iommu/iova.c +++ b/drivers/iommu/iova.c @@ -704,6 +704,9 @@ 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",