| Message ID | 20230928071528.26258-5-yi.l.liu@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | iommufd support allocating nested parent domain | expand |
On 9/28/23 3:15 PM, Yi Liu wrote: > This extends IOMMU_HWPT_ALLOC to allocate domains used as parent (stage-2) > in nested translation. > > Signed-off-by: Yi Liu<yi.l.liu@intel.com> > --- > drivers/iommu/iommufd/hw_pagetable.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Best regards, baolu
> From: Liu, Yi L <yi.l.liu@intel.com> > Sent: Thursday, September 28, 2023 3:15 PM > > This extends IOMMU_HWPT_ALLOC to allocate domains used as parent > (stage-2) > in nested translation. > > Signed-off-by: Yi Liu <yi.l.liu@intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
diff --git a/drivers/iommu/iommufd/hw_pagetable.c b/drivers/iommu/iommufd/hw_pagetable.c index 5be7a31cbd9c..8b3d2875d642 100644 --- a/drivers/iommu/iommufd/hw_pagetable.c +++ b/drivers/iommu/iommufd/hw_pagetable.c @@ -83,6 +83,9 @@ iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas, lockdep_assert_held(&ioas->mutex); + if (flags && !ops->domain_alloc_user) + return ERR_PTR(-EOPNOTSUPP); + hwpt = iommufd_object_alloc(ictx, hwpt, IOMMUFD_OBJ_HW_PAGETABLE); if (IS_ERR(hwpt)) return hwpt; @@ -154,7 +157,7 @@ int iommufd_hwpt_alloc(struct iommufd_ucmd *ucmd) struct iommufd_ioas *ioas; int rc; - if (cmd->flags || cmd->__reserved) + if ((cmd->flags & (~IOMMU_HWPT_ALLOC_NEST_PARENT)) || cmd->__reserved) return -EOPNOTSUPP; idev = iommufd_get_device(ucmd, cmd->dev_id);
This extends IOMMU_HWPT_ALLOC to allocate domains used as parent (stage-2) in nested translation. Signed-off-by: Yi Liu <yi.l.liu@intel.com> --- drivers/iommu/iommufd/hw_pagetable.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)