diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index bebe728019af..897940c79a54 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1342,7 +1342,8 @@ static u64 *alloc_pte(struct protection_domain *domain, __npte = PM_LEVEL_PDE(level, virt_to_phys(page)); - if (cmpxchg64(pte, __pte, __npte)) { + /* pte could have been changed somewhere. */ + if (cmpxchg64(pte, __pte, __npte) != __pte) { free_page((unsigned long)page); continue; } |