__npte = PM_LEVEL_PDE(level, iommu_virt_to_phys(page));
/* pte could have been changed somewhere. */
- if (cmpxchg64(pte, __pte, __npte) != __pte)
+ if (!try_cmpxchg64(pte, &__pte, __npte))
free_page((unsigned long)page);
else if (IOMMU_PTE_PRESENT(__pte))
*updated = true;
u64 *pt;
int mode;
- while (cmpxchg64(pte, pteval, 0) != pteval) {
+ while (!try_cmpxchg64(pte, &pteval, 0))
pr_warn("AMD-Vi: IOMMU pte changed since we read it\n");
- pteval = *pte;
- }
if (!IOMMU_PTE_PRESENT(pteval))
return;