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| author | Ralph Campbell <rcampbell@nvidia.com> | 2020-07-23 15:30:00 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-07-28 16:20:33 -0300 |
| commit | 5143192cd410c4fc83be09a2e73423765aee072b (patch) | |
| tree | e6943dd73d6cad7a9afc3fdeeb90542d5bef4a50 /lib | |
| parent | 1a77decd0caed0bc5b6f5e474981d574076f0841 (diff) | |
| download | linux-stable-5143192cd410c4fc83be09a2e73423765aee072b.tar.gz linux-stable-5143192cd410c4fc83be09a2e73423765aee072b.tar.bz2 linux-stable-5143192cd410c4fc83be09a2e73423765aee072b.zip | |
mm/migrate: add a flags parameter to migrate_vma
The src_owner field in struct migrate_vma is being used for two purposes,
it acts as a selection filter for which types of pages are to be migrated
and it identifies device private pages owned by the caller.
Split this into separate parameters so the src_owner field can be used
just to identify device private pages owned by the caller of
migrate_vma_setup().
Rename the src_owner field to pgmap_owner to reflect it is now used only
to identify which device private pages to migrate.
Link: https://lore.kernel.org/r/20200723223004.9586-3-rcampbell@nvidia.com
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_hmm.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/lib/test_hmm.c b/lib/test_hmm.c index 9aa577afc269..e78a1414f58e 100644 --- a/lib/test_hmm.c +++ b/lib/test_hmm.c @@ -585,15 +585,6 @@ static void dmirror_migrate_alloc_and_copy(struct migrate_vma *args, */ spage = migrate_pfn_to_page(*src); - /* - * Don't migrate device private pages from our own driver or - * others. For our own we would do a device private memory copy - * not a migration and for others, we would need to fault the - * other device's page into system memory first. - */ - if (spage && is_zone_device_page(spage)) - continue; - dpage = dmirror_devmem_alloc_page(mdevice); if (!dpage) continue; @@ -702,7 +693,8 @@ static int dmirror_migrate(struct dmirror *dmirror, args.dst = dst_pfns; args.start = addr; args.end = next; - args.src_owner = NULL; + args.pgmap_owner = NULL; + args.flags = MIGRATE_VMA_SELECT_SYSTEM; ret = migrate_vma_setup(&args); if (ret) goto out; @@ -1053,7 +1045,8 @@ static vm_fault_t dmirror_devmem_fault(struct vm_fault *vmf) args.end = args.start + PAGE_SIZE; args.src = &src_pfns; args.dst = &dst_pfns; - args.src_owner = dmirror->mdevice; + args.pgmap_owner = dmirror->mdevice; + args.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE; if (migrate_vma_setup(&args)) return VM_FAULT_SIGBUS; |