On Fri, 25 Jun 2021, Rahul Singh wrote: > 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 <[email protected]> > Signed-off-by: Sricharan R <[email protected]> > Signed-off-by: Will Deacon <[email protected]> > > Signed-off-by: Rahul Singh <[email protected]>
Acked-by: Stefano Stabellini <[email protected]> Tested-by: Stefano Stabellini <[email protected]> > --- > 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 >
