iommu: iommu-debug: limit memory address exposure
Update pte and dma atos debugfs nodes to be inline
with other iommu debugfs nodes and only expose memory
addresses when kptr_restrict is disabled.
Change-Id: I46d5de498b811b4874be570aea7b41461b9a1a98
Signed-off-by: Liam Mark <lmark@codeaurora.org>
diff --git a/drivers/iommu/iommu-debug.c b/drivers/iommu/iommu-debug.c
index b3865b9..25b85ab 100644
--- a/drivers/iommu/iommu-debug.c
+++ b/drivers/iommu/iommu-debug.c
@@ -1488,6 +1488,10 @@
ssize_t retval;
size_t buflen;
+ if (kptr_restrict != 0) {
+ pr_err("kptr_restrict needs to be disabled.\n");
+ return -EPERM;
+ }
if (!dev->archdata.mapping) {
pr_err("No mapping. Did you already attach?\n");
return -EINVAL;
@@ -1607,6 +1611,10 @@
ssize_t retval;
size_t buflen;
+ if (kptr_restrict != 0) {
+ pr_err("kptr_restrict needs to be disabled.\n");
+ return -EPERM;
+ }
if (!dev->archdata.mapping) {
pr_err("No mapping. Did you already attach?\n");
return -EINVAL;