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| author | Dan Williams <dan.j.williams@intel.com> | 2015-12-11 00:14:20 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-12-11 00:14:20 +0100 |
| commit | 9f1e8cee7742cadbe6b97f2c80b787b4ee067bae (patch) | |
| tree | 077abb728be88ea9f82a0d7288141e1d003e1a6f | |
| parent | nvdimm: do not show pfn_seed for non pmem regions (diff) | |
| download | linux-9f1e8cee7742cadbe6b97f2c80b787b4ee067bae.tar.xz linux-9f1e8cee7742cadbe6b97f2c80b787b4ee067bae.zip | |
libnvdimm, pfn: kill ND_PFN_ALIGN
The alignment constraint isn't necessary now that devm_memremap_pages()
allows for unaligned mappings.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | drivers/nvdimm/nd.h | 7 | ||||
| -rw-r--r-- | drivers/nvdimm/pfn_devs.c | 11 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 15 |
3 files changed, 1 insertions, 32 deletions
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index 417e521d299c..2ce428e9b584 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -29,13 +29,6 @@ enum { ND_MAX_LANES = 256, SECTOR_SHIFT = 9, INT_LBASIZE_ALIGNMENT = 64, -#if IS_ENABLED(CONFIG_NVDIMM_PFN) - ND_PFN_ALIGN = PAGES_PER_SECTION * PAGE_SIZE, - ND_PFN_MASK = ND_PFN_ALIGN - 1, -#else - ND_PFN_ALIGN = 0, - ND_PFN_MASK = 0, -#endif }; struct nvdimm_drvdata { diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index 71805a1aa0f3..96c122918ee1 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -241,10 +241,6 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn) if (!is_nd_pmem(nd_pfn->dev.parent)) return -ENODEV; - /* section alignment for simple hotplug */ - if (nvdimm_namespace_capacity(ndns) < ND_PFN_ALIGN) - return -ENODEV; - if (nvdimm_read_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb))) return -ENXIO; @@ -286,12 +282,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn) */ offset = le64_to_cpu(pfn_sb->dataoff); nsio = to_nd_namespace_io(&ndns->dev); - if (nsio->res.start & ND_PFN_MASK) { - dev_err(&nd_pfn->dev, - "init failed: %s not section aligned\n", - dev_name(&ndns->dev)); - return -EBUSY; - } else if (offset >= resource_size(&nsio->res)) { + if (offset >= resource_size(&nsio->res)) { dev_err(&nd_pfn->dev, "pfn array size exceeds capacity of %s\n", dev_name(&ndns->dev)); return -EBUSY; diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 8ee79893d2f5..520c00321dad 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -241,11 +241,6 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn) if (rc == 0 || rc == -EBUSY) return rc; - /* section alignment for simple hotplug */ - if (nvdimm_namespace_capacity(ndns) < ND_PFN_ALIGN - || pmem->phys_addr & ND_PFN_MASK) - return -ENODEV; - nd_region = to_nd_region(nd_pfn->dev.parent); if (nd_region->ro) { dev_info(&nd_pfn->dev, @@ -326,16 +321,6 @@ static int nvdimm_namespace_attach_pfn(struct nd_namespace_common *ndns) if (rc) return rc; - if (PAGE_SIZE != SZ_4K) { - dev_err(dev, "only supported on systems with 4K PAGE_SIZE\n"); - return -ENXIO; - } - if (nsio->res.start & ND_PFN_MASK) { - dev_err(dev, "%s not memory hotplug section aligned\n", - dev_name(&ndns->dev)); - return -ENXIO; - } - pfn_sb = nd_pfn->pfn_sb; offset = le64_to_cpu(pfn_sb->dataoff); nd_pfn->mode = le32_to_cpu(nd_pfn->pfn_sb->mode); |