Device generic type case added for migrate_vma_pages and migrate_vma_check_page helpers. Both, generic and private device types have the same conditions to decide to migrate pages from/to device memory.
Signed-off-by: Alex Sierra alex.sierra@amd.com --- mm/migrate.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c index e3a10e2a1bb3..f9e6bfa2867c 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2565,7 +2565,7 @@ static bool migrate_vma_check_page(struct page *page) * FIXME proper solution is to rework migration_entry_wait() so * it does not need to take a reference on page. */ - return is_device_private_page(page); + return is_device_page(page); }
/* For file back page */ @@ -2854,7 +2854,7 @@ EXPORT_SYMBOL(migrate_vma_setup); * handle_pte_fault() * do_anonymous_page() * to map in an anonymous zero page but the struct page will be a ZONE_DEVICE - * private page. + * private or generic page. */ static void migrate_vma_insert_page(struct migrate_vma *migrate, unsigned long addr, @@ -2925,10 +2925,14 @@ static void migrate_vma_insert_page(struct migrate_vma *migrate,
swp_entry = make_device_private_entry(page, vma->vm_flags & VM_WRITE); entry = swp_entry_to_pte(swp_entry); + } else if (is_device_page(page)) { + entry = mk_pte(page, vma->vm_page_prot); + if (vma->vm_flags & VM_WRITE) + entry = pte_mkwrite(pte_mkdirty(entry)); } else { /* - * For now we only support migrating to un-addressable - * device memory. + * We support migrating to private and generic types for device + * zone memory. */ pr_warn_once("Unsupported ZONE_DEVICE page type.\n"); goto abort; @@ -3034,10 +3038,10 @@ void migrate_vma_pages(struct migrate_vma *migrate) mapping = page_mapping(page);
if (is_zone_device_page(newpage)) { - if (is_device_private_page(newpage)) { + if (is_device_page(newpage)) { /* - * For now only support private anonymous when - * migrating to un-addressable device memory. + * For now only support private and generic + * anonymous when migrating to device memory. */ if (mapping) { migrate->src[i] &= ~MIGRATE_PFN_MIGRATE;