return ret;
}
-static inline bool
-nouveau_dmem_page(struct nouveau_drm *drm, struct page *page)
-{
- return is_device_private_page(page) && drm->dmem == page_to_dmem(page);
-}
-
void
nouveau_dmem_convert_pfn(struct nouveau_drm *drm,
struct hmm_range *range)
if (!is_device_private_page(page))
continue;
- if (!nouveau_dmem_page(drm, page)) {
- WARN(1, "Some unknown device memory !\n");
- range->pfns[i] = 0;
- continue;
- }
-
addr = nouveau_dmem_page_addr(page);
range->pfns[i] &= ((1UL << range->pfn_shift) - 1);
range->pfns[i] |= (addr >> PAGE_SHIFT) << range->pfn_shift;
* @pfn_flags_mask: allows to mask pfn flags so that only default_flags matter
* @pfn_shifts: pfn shift value (should be <= PAGE_SHIFT)
* @valid: pfns array did not change since it has been fill by an HMM function
+ * @dev_private_owner: owner of device private pages
*/
struct hmm_range {
struct mmu_interval_notifier *notifier;
uint64_t default_flags;
uint64_t pfn_flags_mask;
uint8_t pfn_shift;
+ void *dev_private_owner;
};
/*
unsigned long end, uint64_t *pfns, pmd_t pmd);
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
+static inline bool hmm_is_device_private_entry(struct hmm_range *range,
+ swp_entry_t entry)
+{
+ return is_device_private_entry(entry) &&
+ device_private_entry_to_page(entry)->pgmap->owner ==
+ range->dev_private_owner;
+}
+
static inline uint64_t pte_to_hmm_pfn_flags(struct hmm_range *range, pte_t pte)
{
if (pte_none(pte) || !pte_present(pte) || pte_protnone(pte))
* Never fault in device private pages pages, but just report
* the PFN even if not present.
*/
- if (is_device_private_entry(entry)) {
+ if (hmm_is_device_private_entry(range, entry)) {
*pfn = hmm_device_entry_from_pfn(range,
swp_offset(entry));
*pfn |= range->flags[HMM_PFN_VALID];