From bb11edcec1a953ce590da797b0d005cd60f21e83 Mon Sep 17 00:00:00 2001 From: Rahul Singh Date: Fri, 25 Jun 2021 17:37:27 +0100 Subject: [PATCH] xen/arm: smmuv1: Set privileged attr to 'default' 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 Signed-off-by: Sricharan R Signed-off-by: Will Deacon Signed-off-by: Rahul Singh Acked-by: Stefano Stabellini Tested-by: Stefano Stabellini --- 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 05c2d238b3..da2cd457d7 100644 --- a/xen/drivers/passthrough/arm/smmu.c +++ b/xen/drivers/passthrough/arm/smmu.c @@ -1567,7 +1567,7 @@ 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); } -- 2.39.5