Merge tag 'libnvdimm-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "The libnvdimm pull request is relatively small this time around due to
  some development topics being deferred to 4.11.

  As for this pull request the bulk of it has been in -next for several
  releases leading to one late fix being added (commit 868f036fee4b
  ("libnvdimm: fix mishandled nvdimm_clear_poison() return value")). It
  has received a build success notification from the 0day-kbuild robot
  and passes the latest libnvdimm unit tests.

  Summary:

   - Dynamic label support: To date namespace label support has been
     limited to disambiguating cases where PMEM (direct load/store) and
     BLK (mmio aperture) accessed-capacity alias on the same DIMM. Since
     4.9 added support for multiple namespaces per PMEM-region there is
     value to support namespace labels even in the non-aliasing case.
     The presence of a valid namespace index block force-enables label
     support when the kernel would otherwise rely on region boundaries,
     and permits the region to be sub-divided.

   - Handle media errors in namespace metadata: Complement the error
     handling for media errors in namespace data areas with support for
     clearing errors on writes, and downgrading potential machine-check
     exceptions to simple i/o errors on read.

   - Device-DAX region attributes: Add 'align', 'id', and 'size' as
     attributes for device-dax regions. In particular this enables
     userspace tooling to generically size memory mapping and i/o
     operations. Prevent userspace from growing assumptions /
     dependencies about the parent device topology for a dax region. A
     libnvdimm namespace may not always be the parent device of a dax
     region.

   - Various cleanups and small fixes"

* tag 'libnvdimm-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  dax: add region 'id', 'size', and 'align' attributes
  libnvdimm: fix mishandled nvdimm_clear_poison() return value
  libnvdimm: replace mutex_is_locked() warnings with lockdep_assert_held
  libnvdimm, pfn: fix align attribute
  libnvdimm, e820: use module_platform_driver
  libnvdimm, namespace: use octal for permissions
  libnvdimm, namespace: avoid multiple sector calculations
  libnvdimm: remove else after return in nsio_rw_bytes()
  libnvdimm, namespace: fix the type of name variable
  libnvdimm: use consistent naming for request_mem_region()
  nvdimm: use the right length of "pmem"
  libnvdimm: check and clear poison before writing to pmem
  tools/testing/nvdimm: dynamic label support
  libnvdimm: allow a platform to force enable label support
  libnvdimm: use generic iostat interfaces

1 files changed, 23 insertions, 7 deletions

diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index 71620fa95953..45be8b55a663 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -125,12 +125,13 @@ struct nfit_test_dcr {
 	(((node & 0xfff) << 16) | ((socket & 0xf) << 12) \
 	 | ((imc & 0xf) << 8) | ((chan & 0xf) << 4) | (dimm & 0xf))
 
-static u32 handle[NUM_DCR] = {
+static u32 handle[] = {
 	[0] = NFIT_DIMM_HANDLE(0, 0, 0, 0, 0),
 	[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),
+	[5] = NFIT_DIMM_HANDLE(1, 0, 0, 0, 0),
 };
 
 static unsigned long dimm_fail_cmd_flags[NUM_DCR];
@@ -142,6 +143,7 @@ struct nfit_test {
 	void *nfit_buf;
 	dma_addr_t nfit_dma;
 	size_t nfit_size;
+	int dcr_idx;
 	int num_dcr;
 	int num_pm;
 	void **dimm;
@@ -426,11 +428,11 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
 			break;
 		case ND_CMD_GET_CONFIG_DATA:
 			rc = nfit_test_cmd_get_config_data(buf, buf_len,
-				t->label[i]);
+				t->label[i - t->dcr_idx]);
 			break;
 		case ND_CMD_SET_CONFIG_DATA:
 			rc = nfit_test_cmd_set_config_data(buf, buf_len,
-				t->label[i]);
+				t->label[i - t->dcr_idx]);
 			break;
 		case ND_CMD_SMART:
 			rc = nfit_test_cmd_smart(buf, buf_len);
@@ -682,7 +684,7 @@ static int nfit_test0_alloc(struct nfit_test *t)
 	if (!t->spa_set[2])
 		return -ENOMEM;
 
-	for (i = 0; i < NUM_DCR; i++) {
+	for (i = 0; i < t->num_dcr; i++) {
 		t->dimm[i] = test_alloc(t, DIMM_SIZE, &t->dimm_dma[i]);
 		if (!t->dimm[i])
 			return -ENOMEM;
@@ -699,7 +701,7 @@ static int nfit_test0_alloc(struct nfit_test *t)
 			return -ENOMEM;
 	}
 
-	for (i = 0; i < NUM_DCR; i++) {
+	for (i = 0; i < t->num_dcr; i++) {
 		t->dcr[i] = test_alloc(t, LABEL_SIZE, &t->dcr_dma[i]);
 		if (!t->dcr[i])
 			return -ENOMEM;
@@ -728,6 +730,7 @@ static int nfit_test1_alloc(struct nfit_test *t)
 	size_t nfit_size = sizeof(struct acpi_nfit_system_address) * 2
 		+ sizeof(struct acpi_nfit_memory_map)
 		+ offsetof(struct acpi_nfit_control_region, window_size);
+	int i;
 
 	t->nfit_buf = test_alloc(t, nfit_size, &t->nfit_dma);
 	if (!t->nfit_buf)
@@ -738,6 +741,13 @@ static int nfit_test1_alloc(struct nfit_test *t)
 	if (!t->spa_set[0])
 		return -ENOMEM;
 
+	for (i = 0; i < t->num_dcr; i++) {
+		t->label[i] = test_alloc(t, LABEL_SIZE, &t->label_dma[i]);
+		if (!t->label[i])
+			return -ENOMEM;
+		sprintf(t->label[i], "label%d", i);
+	}
+
 	t->spa_set[1] = test_alloc(t, SPA_VCD_SIZE, &t->spa_set_dma[1]);
 	if (!t->spa_set[1])
 		return -ENOMEM;
@@ -1450,7 +1460,7 @@ static void nfit_test1_setup(struct nfit_test *t)
 	memdev = nfit_buf + offset;
 	memdev->header.type = ACPI_NFIT_TYPE_MEMORY_MAP;
 	memdev->header.length = sizeof(*memdev);
-	memdev->device_handle = 0;
+	memdev->device_handle = handle[5];
 	memdev->physical_id = 0;
 	memdev->region_id = 0;
 	memdev->range_index = 0+1;
@@ -1472,7 +1482,7 @@ static void nfit_test1_setup(struct nfit_test *t)
 			window_size);
 	dcr->region_index = 0+1;
 	dcr_common_init(dcr);
-	dcr->serial_number = ~0;
+	dcr->serial_number = ~handle[5];
 	dcr->code = NFIT_FIC_BYTE;
 	dcr->windows = 0;
 
@@ -1483,6 +1493,9 @@ static void nfit_test1_setup(struct nfit_test *t)
 	set_bit(ND_CMD_ARS_START, &acpi_desc->bus_cmd_force_en);
 	set_bit(ND_CMD_ARS_STATUS, &acpi_desc->bus_cmd_force_en);
 	set_bit(ND_CMD_CLEAR_ERROR, &acpi_desc->bus_cmd_force_en);
+	set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en);
+	set_bit(ND_CMD_GET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
+	set_bit(ND_CMD_SET_CONFIG_DATA, &acpi_desc->dimm_cmd_force_en);
 }
 
 static int nfit_test_blk_do_io(struct nd_blk_region *ndbr, resource_size_t dpa,
@@ -1886,12 +1899,15 @@ static __init int nfit_test_init(void)
 		switch (i) {
 		case 0:
 			nfit_test->num_pm = NUM_PM;
+			nfit_test->dcr_idx = 0;
 			nfit_test->num_dcr = NUM_DCR;
 			nfit_test->alloc = nfit_test0_alloc;
 			nfit_test->setup = nfit_test0_setup;
 			break;
 		case 1:
 			nfit_test->num_pm = 1;
+			nfit_test->dcr_idx = NUM_DCR;
+			nfit_test->num_dcr = 1;
 			nfit_test->alloc = nfit_test1_alloc;
 			nfit_test->setup = nfit_test1_setup;
 			break;