On machines with no 32-bit addressable RAM whatsoever, we shouldn't
even touch the v7s format as it's never going to work.
Fixes: e5fc9753b1a8 ("iommu/io-pgtable: Add ARMv7 short descriptor support")
Reported-by: Eric Auger <[email protected]>
Signed-off-by: Robin Murphy <[email protected]>
---
drivers/iommu/io-pgtable-arm-v7s.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c
b/drivers/iommu/io-pgtable-arm-v7s.c
index def8ca1c982d..b7759a48f4ed 100644
--- a/drivers/iommu/io-pgtable-arm-v7s.c
+++ b/drivers/iommu/io-pgtable-arm-v7s.c
@@ -633,6 +633,9 @@ static struct io_pgtable *arm_v7s_alloc_pgtable(struct
io_pgtable_cfg *cfg,
{
struct arm_v7s_io_pgtable *data;
+ if (upper_32_bits(PHYS_OFFSET))
+ return NULL;
+
if (cfg->ias > ARM_V7S_ADDR_BITS || cfg->oas > ARM_V7S_ADDR_BITS)
return NULL;
--
2.8.1.dirty
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