[PATCH] xen/arm: smmuv1: Set privileged attr to 'default'

[Rahul Singh <rahul.singh@xxxxxxx>]

Backport commit e19898077cfb642fe151ba22981e795c74d9e114
"iommu/arm-smmu: Set privileged attribute to 'default' instead of
'unprivileged'"

Original commit message:
    Currently the driver sets all the device transactions privileges
    to UNPRIVILEGED, but there are cases where the iommu masters wants
    to isolate privileged supervisor and unprivileged user.
    So don't override the privileged setting to unprivileged, instead
    set it to default as incoming and let it be controlled by the
    pagetable settings.

    Acked-by: Will Deacon <will.deacon@xxxxxxx>
    Signed-off-by: Sricharan R <sricharan@xxxxxxxxxxxxxx>
    Signed-off-by: Will Deacon <will.deacon@xxxxxxx>

Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx>
---
 xen/drivers/passthrough/arm/smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/arm/smmu.c 
b/xen/drivers/passthrough/arm/smmu.c
index 1a68c2ab3b..d9a3a0cbf6 100644
--- a/xen/drivers/passthrough/arm/smmu.c
+++ b/xen/drivers/passthrough/arm/smmu.c
@@ -1566,7 +1566,7 @@ static int arm_smmu_domain_add_master(struct 
arm_smmu_domain *smmu_domain,
                        continue;
 
                s2cr[idx].type = type ;
-               s2cr[idx].privcfg = S2CR_PRIVCFG_UNPRIV;
+               s2cr[idx].privcfg = S2CR_PRIVCFG_DEFAULT;
                s2cr[idx].cbndx = cbndx;
                arm_smmu_write_s2cr(smmu, idx);
        }
-- 
2.17.1