Merge tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "Outside of the new ACPI-NFIT hot-add support this pull request is more
  notable for what it does not contain, than what it does.  There were a
  handful of development topics this cycle, dax get_user_pages, dax
  fsync, and raw block dax, that need more more iteration and will wait
  for 4.5.

  The patches to make devm and the pmem driver NUMA aware have been in
  -next for several weeks.  The hot-add support has not, but is
  contained to the NFIT driver and is passing unit tests.  The coredump
  support is straightforward and was looked over by Jeff.  All of it has
  received a 0day build success notification across 107 configs.

  Summary:

   - Add support for the ACPI 6.0 NFIT hot add mechanism to process
     updates of the NFIT at runtime.

   - Teach the coredump implementation how to filter out DAX mappings.

   - Introduce NUMA hints for allocations made by the pmem driver, and
     as a side effect all devm allocations now hint their NUMA node by
     default"

* tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  coredump: add DAX filtering for FDPIC ELF coredumps
  coredump: add DAX filtering for ELF coredumps
  acpi: nfit: Add support for hot-add
  nfit: in acpi_nfit_init, break on a 0-length table
  pmem, memremap: convert to numa aware allocations
  devm_memremap_pages: use numa_mem_id
  devm: make allocations numa aware by default
  devm_memremap: convert to return ERR_PTR
  devm_memunmap: use devres_release()
  pmem: kill memremap_pmem()
  x86, mm: quiet arch_add_memory()

1 files changed, 162 insertions, 2 deletions

diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index 021e6f97f33e..dce346aa94ea 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -17,8 +17,10 @@
 #include <linux/vmalloc.h>
 #include <linux/device.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/ndctl.h>
 #include <linux/sizes.h>
+#include <linux/list.h>
 #include <linux/slab.h>
 #include <nfit.h>
 #include <nd.h>
@@ -44,6 +46,15 @@
  * +------+  |                 blk5.0             |  pm1.0  |    3      region5
  *           +-------------------------+----------+-+-------+
  *
+ * +--+---+
+ * | cpu1 |
+ * +--+---+                   (Hotplug DIMM)
+ *    |      +----------------------------------------------+
+ * +--+---+  |                 blk6.0/pm7.0                 |    4      region6/7
+ * | imc0 +--+----------------------------------------------+
+ * +------+
+ *
+ *
  * *) In this layout we have four dimms and two memory controllers in one
  *    socket.  Each unique interface (BLK or PMEM) to DPA space
  *    is identified by a region device with a dynamically assigned id.
@@ -85,8 +96,8 @@
  *    reference an NVDIMM.
  */
 enum {
-        NUM_PM  = 2,
-        NUM_DCR = 4,
+        NUM_PM  = 3,
+        NUM_DCR = 5,
         NUM_BDW = NUM_DCR,
         NUM_SPA = NUM_PM + NUM_DCR + NUM_BDW,
         NUM_MEM = NUM_DCR + NUM_BDW + 2 /* spa0 iset */ + 4 /* spa1 iset */,
@@ -115,6 +126,7 @@ static u32 handle[NUM_DCR] = {
         [1] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 1),
         [2] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 0),
         [3] = NFIT_DIMM_HANDLE(0, 0, 1, 0, 1),
+        [4] = NFIT_DIMM_HANDLE(0, 1, 0, 0, 0),
 };
 
 struct nfit_test {
@@ -138,6 +150,7 @@ struct nfit_test {
         dma_addr_t *dcr_dma;
         int (*alloc)(struct nfit_test *t);
         void (*setup)(struct nfit_test *t);
+        int setup_hotplug;
 };
 
 static struct nfit_test *to_nfit_test(struct device *dev)
@@ -428,6 +441,10 @@ static int nfit_test0_alloc(struct nfit_test *t)
         if (!t->spa_set[1])
                 return -ENOMEM;
 
+        t->spa_set[2] = test_alloc_coherent(t, SPA0_SIZE, &t->spa_set_dma[2]);
+        if (!t->spa_set[2])
+                return -ENOMEM;
+
         for (i = 0; i < NUM_DCR; i++) {
                 t->dimm[i] = test_alloc(t, DIMM_SIZE, &t->dimm_dma[i]);
                 if (!t->dimm[i])
@@ -950,6 +967,126 @@ static void nfit_test0_setup(struct nfit_test *t)
         flush->hint_count = 1;
         flush->hint_address[0] = t->flush_dma[3];
 
+        if (t->setup_hotplug) {
+                offset = offset + sizeof(struct acpi_nfit_flush_address) * 4;
+                /* dcr-descriptor4 */
+                dcr = nfit_buf + offset;
+                dcr->header.type = ACPI_NFIT_TYPE_CONTROL_REGION;
+                dcr->header.length = sizeof(struct acpi_nfit_control_region);
+                dcr->region_index = 4+1;
+                dcr->vendor_id = 0xabcd;
+                dcr->device_id = 0;
+                dcr->revision_id = 1;
+                dcr->serial_number = ~handle[4];
+                dcr->windows = 1;
+                dcr->window_size = DCR_SIZE;
+                dcr->command_offset = 0;
+                dcr->command_size = 8;
+                dcr->status_offset = 8;
+                dcr->status_size = 4;
+
+                offset = offset + sizeof(struct acpi_nfit_control_region);
+                /* bdw4 (spa/dcr4, dimm4) */
+                bdw = nfit_buf + offset;
+                bdw->header.type = ACPI_NFIT_TYPE_DATA_REGION;
+                bdw->header.length = sizeof(struct acpi_nfit_data_region);
+                bdw->region_index = 4+1;
+                bdw->windows = 1;
+                bdw->offset = 0;
+                bdw->size = BDW_SIZE;
+                bdw->capacity = DIMM_SIZE;
+                bdw->start_address = 0;
+
+                offset = offset + sizeof(struct acpi_nfit_data_region);
+                /* spa10 (dcr4) dimm4 */
+                spa = nfit_buf + offset;
+                spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
+                spa->header.length = sizeof(*spa);
+                memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_DCR), 16);
+                spa->range_index = 10+1;
+                spa->address = t->dcr_dma[4];
+                spa->length = DCR_SIZE;
+
+                /*
+                 * spa11 (single-dimm interleave for hotplug, note storage
+                 * does not actually alias the related block-data-window
+                 * regions)
+                 */
+                spa = nfit_buf + offset + sizeof(*spa);
+                spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
+                spa->header.length = sizeof(*spa);
+                memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_PM), 16);
+                spa->range_index = 11+1;
+                spa->address = t->spa_set_dma[2];
+                spa->length = SPA0_SIZE;
+
+                /* spa12 (bdw for dcr4) dimm4 */
+                spa = nfit_buf + offset + sizeof(*spa) * 2;
+                spa->header.type = ACPI_NFIT_TYPE_SYSTEM_ADDRESS;
+                spa->header.length = sizeof(*spa);
+                memcpy(spa->range_guid, to_nfit_uuid(NFIT_SPA_BDW), 16);
+                spa->range_index = 12+1;
+                spa->address = t->dimm_dma[4];
+                spa->length = DIMM_SIZE;
+
+                offset = offset + sizeof(*spa) * 3;
+                /* mem-region14 (spa/dcr4, dimm4) */
+                memdev = nfit_buf + offset;
+                memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
+                memdev->header.length = sizeof(*memdev);
+                memdev->device_handle = handle[4];
+                memdev->physical_id = 4;
+                memdev->region_id = 0;
+                memdev->range_index = 10+1;
+                memdev->region_index = 4+1;
+                memdev->region_size = 0;
+                memdev->region_offset = 0;
+                memdev->address = 0;
+                memdev->interleave_index = 0;
+                memdev->interleave_ways = 1;
+
+                /* mem-region15 (spa0, dimm4) */
+                memdev = nfit_buf + offset +
+                                sizeof(struct acpi_nfit_memory_map);
+                memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
+                memdev->header.length = sizeof(*memdev);
+                memdev->device_handle = handle[4];
+                memdev->physical_id = 4;
+                memdev->region_id = 0;
+                memdev->range_index = 11+1;
+                memdev->region_index = 4+1;
+                memdev->region_size = SPA0_SIZE;
+                memdev->region_offset = t->spa_set_dma[2];
+                memdev->address = 0;
+                memdev->interleave_index = 0;
+                memdev->interleave_ways = 1;
+
+                /* mem-region16 (spa/dcr4, dimm4) */
+                memdev = nfit_buf + offset +
+                                sizeof(struct acpi_nfit_memory_map) * 2;
+                memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
+                memdev->header.length = sizeof(*memdev);
+                memdev->device_handle = handle[4];
+                memdev->physical_id = 4;
+                memdev->region_id = 0;
+                memdev->range_index = 12+1;
+                memdev->region_index = 4+1;
+                memdev->region_size = 0;
+                memdev->region_offset = 0;
+                memdev->address = 0;
+                memdev->interleave_index = 0;
+                memdev->interleave_ways = 1;
+
+                offset = offset + sizeof(struct acpi_nfit_memory_map) * 3;
+                /* flush3 (dimm4) */
+                flush = nfit_buf + offset;
+                flush->header.type = ACPI_NFIT_TYPE_FLUSH_ADDRESS;
+                flush->header.length = sizeof(struct acpi_nfit_flush_address);
+                flush->device_handle = handle[4];
+                flush->hint_count = 1;
+                flush->hint_address[0] = t->flush_dma[4];
+        }
+
         acpi_desc = &t->acpi_desc;
         set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_dsm_force_en);
         set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_dsm_force_en);
@@ -1108,6 +1245,29 @@ static int nfit_test_probe(struct platform_device *pdev)
         if (!acpi_desc->nvdimm_bus)
                 return -ENXIO;
 
+        INIT_LIST_HEAD(&acpi_desc->spa_maps);
+        INIT_LIST_HEAD(&acpi_desc->spas);
+        INIT_LIST_HEAD(&acpi_desc->dcrs);
+        INIT_LIST_HEAD(&acpi_desc->bdws);
+        INIT_LIST_HEAD(&acpi_desc->idts);
+        INIT_LIST_HEAD(&acpi_desc->flushes);
+        INIT_LIST_HEAD(&acpi_desc->memdevs);
+        INIT_LIST_HEAD(&acpi_desc->dimms);
+        mutex_init(&acpi_desc->spa_map_mutex);
+        mutex_init(&acpi_desc->init_mutex);
+
+        rc = acpi_nfit_init(acpi_desc, nfit_test->nfit_size);
+        if (rc) {
+                nvdimm_bus_unregister(acpi_desc->nvdimm_bus);
+                return rc;
+        }
+
+        if (nfit_test->setup != nfit_test0_setup)
+                return 0;
+
+        nfit_test->setup_hotplug = 1;
+        nfit_test->setup(nfit_test);
+
         rc = acpi_nfit_init(acpi_desc, nfit_test->nfit_size);
         if (rc) {
                 nvdimm_bus_unregister(acpi_desc->nvdimm_bus);