[PATCH] xen/iommu: smmu: Use 1UL << 31 rather than 1 << 31

[Julien Grall <julien@xxxxxxx>]

From: Julien Grall <jgrall@xxxxxxxxxx>

Replace all the use of 1 << 31 with 1UL << 31 to prevent undefined
behavior in the SMMU driver.

Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
---
 xen/drivers/passthrough/arm/smmu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/drivers/passthrough/arm/smmu.c 
b/xen/drivers/passthrough/arm/smmu.c
index ed04d85e05e9..3e8aa378669b 100644
--- a/xen/drivers/passthrough/arm/smmu.c
+++ b/xen/drivers/passthrough/arm/smmu.c
@@ -405,7 +405,7 @@ static struct iommu_group *iommu_group_get(struct device 
*dev)
 #define ID0_NUMSMRG_SHIFT              0
 #define ID0_NUMSMRG_MASK               0xff
 
-#define ID1_PAGESIZE                   (1 << 31)
+#define ID1_PAGESIZE                   (1U << 31)
 #define ID1_NUMPAGENDXB_SHIFT          28
 #define ID1_NUMPAGENDXB_MASK           7
 #define ID1_NUMS2CB_SHIFT              16
@@ -438,7 +438,7 @@ static struct iommu_group *iommu_group_get(struct device 
*dev)
 
 /* Stream mapping registers */
 #define ARM_SMMU_GR0_SMR(n)            (0x800 + ((n) << 2))
-#define SMR_VALID                      (1 << 31)
+#define SMR_VALID                      (1U << 31)
 #define SMR_MASK_SHIFT                 16
 #define SMR_MASK_MASK                  0x7fff
 #define SMR_ID_SHIFT                   0
@@ -506,7 +506,7 @@ static struct iommu_group *iommu_group_get(struct device 
*dev)
 #define RESUME_RETRY                   (0 << 0)
 #define RESUME_TERMINATE               (1 << 0)
 
-#define TTBCR_EAE                      (1 << 31)
+#define TTBCR_EAE                      (1U << 31)
 
 #define TTBCR_PASIZE_SHIFT             16
 #define TTBCR_PASIZE_MASK              0x7
@@ -562,7 +562,7 @@ static struct iommu_group *iommu_group_get(struct device 
*dev)
 #define MAIR_ATTR_IDX_CACHE            1
 #define MAIR_ATTR_IDX_DEV              2
 
-#define FSR_MULTI                      (1 << 31)
+#define FSR_MULTI                      (1U << 31)
 #define FSR_SS                         (1 << 30)
 #define FSR_UUT                                (1 << 8)
 #define FSR_ASF                                (1 << 7)
-- 
2.17.1