From 6b1a7a00427cb54a99237c5f27f1a2875c9960b0 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Thu, 8 Dec 2022 11:10:55 -0400 Subject: [PATCH] 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 Reviewed-by: Kevin Tian Reviewed-by: Lu Baolu Signed-off-by: Jason Gunthorpe --- drivers/vfio/vfio_iommu_type1.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 23c24fe..393b27a 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -37,7 +37,6 @@ #include #include #include -#include #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; -- 2.7.4