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| author | Robin Murphy <robin.murphy@arm.com> | 2017-10-02 12:53:31 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-10-02 15:45:24 +0200 |
| commit | abbb8a09384f69f7bb05936879e51933c146afba (patch) | |
| tree | 87c6386f5fc66a308c55ccf8791ad4a2e5735106 /drivers/iommu/iova.c | |
| parent | iommu/iova: Try harder to allocate from rcache magazine (diff) | |
| download | linux-abbb8a09384f69f7bb05936879e51933c146afba.tar.xz linux-abbb8a09384f69f7bb05936879e51933c146afba.zip | |
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 <fengguang.wu@intel.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Fixes: bb68b2fbfbd6 ('iommu/iova: Add rbtree anchor node')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/iova.c')
| -rw-r--r-- | drivers/iommu/iova.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index b0ca23682008..3aee64b99df1 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", |