diff options
Diffstat (limited to 'drivers/vfio/vfio_iommu_type1.c')
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 0d2f805468e1..d662aa9d1b4b 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -514,6 +514,7 @@ static int follow_fault_pfn(struct vm_area_struct *vma, struct mm_struct *mm, bool write_fault) { pte_t *ptep; + pte_t pte; spinlock_t *ptl; int ret; @@ -536,10 +537,12 @@ static int follow_fault_pfn(struct vm_area_struct *vma, struct mm_struct *mm, return ret; } - if (write_fault && !pte_write(*ptep)) + pte = ptep_get(ptep); + + if (write_fault && !pte_write(pte)) ret = -EFAULT; else - *pfn = pte_pfn(*ptep); + *pfn = pte_pfn(pte); pte_unmap_unlock(ptep, ptl); return ret; @@ -562,7 +565,7 @@ static int vaddr_get_pfns(struct mm_struct *mm, unsigned long vaddr, mmap_read_lock(mm); ret = pin_user_pages_remote(mm, vaddr, npages, flags | FOLL_LONGTERM, - pages, NULL, NULL); + pages, NULL); if (ret > 0) { int i; @@ -2729,7 +2732,7 @@ static int vfio_iommu_iova_build_caps(struct vfio_iommu *iommu, static int vfio_iommu_migration_build_caps(struct vfio_iommu *iommu, struct vfio_info_cap *caps) { - struct vfio_iommu_type1_info_cap_migration cap_mig; + struct vfio_iommu_type1_info_cap_migration cap_mig = {}; cap_mig.header.id = VFIO_IOMMU_TYPE1_INFO_CAP_MIGRATION; cap_mig.header.version = 1; |