This allows to make use of the VFIO_IOMMU_TYPE1 driver with platform
devices on ARM in addition to PCI. This is required in order to use the
Exynos SMMU, or ARM SMMU driver with VFIO_IOMMU_TYPE1.
Signed-off-by: Antonios Motakis <a.motakis@xxxxxxxxxxxxxxxxxxxxxx>
---
drivers/vfio/Kconfig | 2 +-
drivers/vfio/vfio_iommu_type1.c | 5 ++++-
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig
index af7b204..3a598ed 100644
--- a/drivers/vfio/Kconfig
+++ b/drivers/vfio/Kconfig
@@ -11,7 +11,7 @@ config VFIO_IOMMU_SPAPR_TCE
menuconfig VFIO
tristate "VFIO Non-Privileged userspace driver framework"
depends on IOMMU_API
- select VFIO_IOMMU_TYPE1 if X86
+ select VFIO_IOMMU_TYPE1 if X86 || ARM
select VFIO_IOMMU_SPAPR_TCE if (PPC_POWERNV || PPC_PSERIES)
select ANON_INODES
help
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 1f90344..4dc989d 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -30,6 +30,7 @@
#include <linux/iommu.h>
#include <linux/module.h>
#include <linux/mm.h>
+#include <linux/pci.h> /* pci_bus_type */
#include <linux/rbtree.h>
#include <linux/sched.h>
#include <linux/slab.h>
@@ -721,13 +722,15 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
INIT_LIST_HEAD(&domain->group_list);
list_add(&group->next, &domain->group_list);
- if (!allow_unsafe_interrupts &&
+#ifdef CONFIG_PCI
+ if (bus == &pci_bus_type && !allow_unsafe_interrupts &&
!iommu_domain_has_cap(domain->domain, IOMMU_CAP_INTR_REMAP)) {
pr_warn("%s: No interrupt remapping support. Use the module param \"allow_unsafe_interrupts\" to enable VFIO IOMMU support on this platform\n",
__func__);
ret = -EPERM;
goto out_detach;
}
+#endif
if (iommu_domain_has_cap(domain->domain, IOMMU_CAP_CACHE_COHERENCY))
domain->prot |= IOMMU_CACHE;
--
1.8.3.2
--
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