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vfio/type1: Convert to iommu_group_has_isolated_msi() 

Trivially use the new API.

Link: https://lore.kernel.org/r/3-v3-3313bb5dd3a3+10f11-secure_msi_jgg@nvidia.com
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Jason Gunthorpe 2022-12-08 11:10:55 -04:00
parent efc30a8f15
commit 6b1a7a0042
1 changed files with 3 additions and 13 deletions
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16
drivers/vfio/vfio_iommu_type1.c
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@ -37,7 +37,6 @@
#include <linux/vfio.h>
#include <linux/workqueue.h>
#include <linux/notifier.h>
#include <linux/irqdomain.h>
#include "vfio.h"
#define DRIVER_VERSION "0.2"
@ -2160,12 +2159,6 @@ static void vfio_iommu_iova_insert_copy(struct vfio_iommu *iommu,
list_splice_tail(iova_copy, iova);
}
/* Redundantly walks non-present capabilities to simplify caller */
static int vfio_iommu_device_capable(struct device *dev, void *data)
{
return device_iommu_capable(dev, (enum iommu_cap)data);
}
static int vfio_iommu_domain_alloc(struct device *dev, void *data)
{
struct iommu_domain **domain = data;
@ -2180,7 +2173,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
struct vfio_iommu *iommu = iommu_data;
struct vfio_iommu_group *group;
struct vfio_domain *domain, *d;
bool resv_msi, msi_remap;
bool resv_msi;
phys_addr_t resv_msi_base = 0;
struct iommu_domain_geometry *geo;
LIST_HEAD(iova_copy);
@ -2278,11 +2271,8 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
INIT_LIST_HEAD(&domain->group_list);
list_add(&group->next, &domain->group_list);
msi_remap = irq_domain_check_msi_remap() ||
iommu_group_for_each_dev(iommu_group, (void *)IOMMU_CAP_INTR_REMAP,
vfio_iommu_device_capable);
if (!allow_unsafe_interrupts && !msi_remap) {
if (!allow_unsafe_interrupts &&
!iommu_group_has_isolated_msi(iommu_group)) {
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;