Commit a3c0e7b1 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

More libnvdimm updates from Dan Williams:

 - Complete the reworks to interoperate with powerpc dynamic huge page
   sizes

 - Fix a crash due to missed accounting for the powerpc 'struct
   page'-memmap mapping granularity

 - Fix badblock initialization for volatile (DRAM emulated) pmem ranges

 - Stop triggering request_key() notifications to userspace when
   NVDIMM-security is disabled / not present

 - Miscellaneous small fixups

* tag 'libnvdimm-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm/region: Enable MAP_SYNC for volatile regions
  libnvdimm: prevent nvdimm from requesting key when security is disabled
  libnvdimm/region: Initialize bad block for volatile namespaces
  libnvdimm/nfit_test: Fix acpi_handle redefinition
  libnvdimm/altmap: Track namespace boundaries in altmap
  libnvdimm: Fix endian conversion issues 
  libnvdimm/dax: Pick the right alignment default when creating dax devices
  powerpc/book3s64: Export has_transparent_hugepage() related functions.
parents 939ca9f1 4c806b89
......@@ -254,7 +254,13 @@ extern void radix__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
extern pgtable_t radix__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
extern pmd_t radix__pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp);
extern int radix__has_transparent_hugepage(void);
static inline int radix__has_transparent_hugepage(void)
{
/* For radix 2M at PMD level means thp */
if (mmu_psize_defs[MMU_PAGE_2M].shift == PMD_SHIFT)
return 1;
return 0;
}
#endif
extern int __meminit radix__vmemmap_create_mapping(unsigned long start,
......
......@@ -406,6 +406,8 @@ int hash__has_transparent_hugepage(void)
return 1;
}
EXPORT_SYMBOL_GPL(hash__has_transparent_hugepage);
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#ifdef CONFIG_STRICT_KERNEL_RWX
......
......@@ -1027,13 +1027,6 @@ pmd_t radix__pmdp_huge_get_and_clear(struct mm_struct *mm,
return old_pmd;
}
int radix__has_transparent_hugepage(void)
{
/* For radix 2M at PMD level means thp */
if (mmu_psize_defs[MMU_PAGE_2M].shift == PMD_SHIFT)
return 1;
return 0;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
void radix__ptep_set_access_flags(struct vm_area_struct *vma, pte_t *ptep,
......
......@@ -172,6 +172,21 @@ static __meminit void vmemmap_list_populate(unsigned long phys,
vmemmap_list = vmem_back;
}
static bool altmap_cross_boundary(struct vmem_altmap *altmap, unsigned long start,
unsigned long page_size)
{
unsigned long nr_pfn = page_size / sizeof(struct page);
unsigned long start_pfn = page_to_pfn((struct page *)start);
if ((start_pfn + nr_pfn) > altmap->end_pfn)
return true;
if (start_pfn < altmap->base_pfn)
return true;
return false;
}
int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
struct vmem_altmap *altmap)
{
......@@ -194,7 +209,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
* fail due to alignment issues when using 16MB hugepages, so
* fall back to system memory if the altmap allocation fail.
*/
if (altmap) {
if (altmap && !altmap_cross_boundary(altmap, start, page_size)) {
p = altmap_alloc_block_buf(page_size, altmap);
if (!p)
pr_debug("altmap block allocation failed, falling back to system memory");
......
......@@ -392,9 +392,9 @@ static int btt_flog_write(struct arena_info *arena, u32 lane, u32 sub,
arena->freelist[lane].sub = 1 - arena->freelist[lane].sub;
if (++(arena->freelist[lane].seq) == 4)
arena->freelist[lane].seq = 1;
if (ent_e_flag(ent->old_map))
if (ent_e_flag(le32_to_cpu(ent->old_map)))
arena->freelist[lane].has_err = 1;
arena->freelist[lane].block = le32_to_cpu(ent_lba(ent->old_map));
arena->freelist[lane].block = ent_lba(le32_to_cpu(ent->old_map));
return ret;
}
......@@ -560,8 +560,8 @@ static int btt_freelist_init(struct arena_info *arena)
* FIXME: if error clearing fails during init, we want to make
* the BTT read-only
*/
if (ent_e_flag(log_new.old_map) &&
!ent_normal(log_new.old_map)) {
if (ent_e_flag(le32_to_cpu(log_new.old_map)) &&
!ent_normal(le32_to_cpu(log_new.old_map))) {
arena->freelist[i].has_err = 1;
ret = arena_clear_freelist_error(arena, i);
if (ret)
......
......@@ -180,7 +180,7 @@ static int nvdimm_clear_badblocks_region(struct device *dev, void *data)
sector_t sector;
/* make sure device is a region */
if (!is_nd_pmem(dev))
if (!is_memory(dev))
return 0;
nd_region = to_nd_region(dev);
......
......@@ -1987,7 +1987,7 @@ static struct device *create_namespace_pmem(struct nd_region *nd_region,
nd_mapping = &nd_region->mapping[i];
label_ent = list_first_entry_or_null(&nd_mapping->labels,
typeof(*label_ent), list);
label0 = label_ent ? label_ent->label : 0;
label0 = label_ent ? label_ent->label : NULL;
if (!label0) {
WARN_ON(1);
......@@ -2322,8 +2322,9 @@ static struct device **scan_labels(struct nd_region *nd_region)
continue;
/* skip labels that describe extents outside of the region */
if (nd_label->dpa < nd_mapping->start || nd_label->dpa > map_end)
continue;
if (__le64_to_cpu(nd_label->dpa) < nd_mapping->start ||
__le64_to_cpu(nd_label->dpa) > map_end)
continue;
i = add_namespace_resource(nd_region, nd_label, devs, count);
if (i < 0)
......
......@@ -289,11 +289,7 @@ static inline struct device *nd_btt_create(struct nd_region *nd_region)
struct nd_pfn *to_nd_pfn(struct device *dev);
#if IS_ENABLED(CONFIG_NVDIMM_PFN)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define PFN_DEFAULT_ALIGNMENT HPAGE_PMD_SIZE
#else
#define PFN_DEFAULT_ALIGNMENT PAGE_SIZE
#endif
#define MAX_NVDIMM_ALIGN 4
int nd_pfn_probe(struct device *dev, struct nd_namespace_common *ndns);
bool is_nd_pfn(struct device *dev);
......
......@@ -103,39 +103,42 @@ static ssize_t align_show(struct device *dev,
return sprintf(buf, "%ld\n", nd_pfn->align);
}
static const unsigned long *nd_pfn_supported_alignments(void)
static unsigned long *nd_pfn_supported_alignments(unsigned long *alignments)
{
/*
* This needs to be a non-static variable because the *_SIZE
* macros aren't always constants.
*/
const unsigned long supported_alignments[] = {
PAGE_SIZE,
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
HPAGE_PMD_SIZE,
#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
HPAGE_PUD_SIZE,
#endif
#endif
0,
};
static unsigned long data[ARRAY_SIZE(supported_alignments)];
memcpy(data, supported_alignments, sizeof(data));
alignments[0] = PAGE_SIZE;
if (has_transparent_hugepage()) {
alignments[1] = HPAGE_PMD_SIZE;
if (IS_ENABLED(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD))
alignments[2] = HPAGE_PUD_SIZE;
}
return alignments;
}
/*
* Use pmd mapping if supported as default alignment
*/
static unsigned long nd_pfn_default_alignment(void)
{
return data;
if (has_transparent_hugepage())
return HPAGE_PMD_SIZE;
return PAGE_SIZE;
}
static ssize_t align_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
struct nd_pfn *nd_pfn = to_nd_pfn_safe(dev);
unsigned long aligns[MAX_NVDIMM_ALIGN] = { [0] = 0, };
ssize_t rc;
nd_device_lock(dev);
nvdimm_bus_lock(dev);
rc = nd_size_select_store(dev, buf, &nd_pfn->align,
nd_pfn_supported_alignments());
nd_pfn_supported_alignments(aligns));
dev_dbg(dev, "result: %zd wrote: %s%s", rc, buf,
buf[len - 1] == '\n' ? "" : "\n");
nvdimm_bus_unlock(dev);
......@@ -259,7 +262,10 @@ static DEVICE_ATTR_RO(size);
static ssize_t supported_alignments_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return nd_size_select_show(0, nd_pfn_supported_alignments(), buf);
unsigned long aligns[MAX_NVDIMM_ALIGN] = { [0] = 0, };
return nd_size_select_show(0,
nd_pfn_supported_alignments(aligns), buf);
}
static DEVICE_ATTR_RO(supported_alignments);
......@@ -302,7 +308,7 @@ struct device *nd_pfn_devinit(struct nd_pfn *nd_pfn,
return NULL;
nd_pfn->mode = PFN_MODE_NONE;
nd_pfn->align = PFN_DEFAULT_ALIGNMENT;
nd_pfn->align = nd_pfn_default_alignment();
dev = &nd_pfn->dev;
device_initialize(&nd_pfn->dev);
if (ndns && !__nd_attach_ndns(&nd_pfn->dev, ndns, &nd_pfn->ndns)) {
......@@ -412,6 +418,21 @@ static int nd_pfn_clear_memmap_errors(struct nd_pfn *nd_pfn)
return 0;
}
static bool nd_supported_alignment(unsigned long align)
{
int i;
unsigned long supported[MAX_NVDIMM_ALIGN] = { [0] = 0, };
if (align == 0)
return false;
nd_pfn_supported_alignments(supported);
for (i = 0; supported[i]; i++)
if (align == supported[i])
return true;
return false;
}
/**
* nd_pfn_validate - read and validate info-block
* @nd_pfn: fsdax namespace runtime state / properties
......@@ -496,6 +517,18 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
return -EOPNOTSUPP;
}
/*
* Check whether the we support the alignment. For Dax if the
* superblock alignment is not matching, we won't initialize
* the device.
*/
if (!nd_supported_alignment(align) &&
!memcmp(pfn_sb->signature, DAX_SIG, PFN_SIG_LEN)) {
dev_err(&nd_pfn->dev, "init failed, alignment mismatch: "
"%ld:%ld\n", nd_pfn->align, align);
return -EOPNOTSUPP;
}
if (!nd_pfn->uuid) {
/*
* When probing a namepace via nd_pfn_probe() the uuid
......@@ -639,9 +672,11 @@ static int __nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap)
struct nd_namespace_common *ndns = nd_pfn->ndns;
struct nd_namespace_io *nsio = to_nd_namespace_io(&ndns->dev);
resource_size_t base = nsio->res.start + start_pad;
resource_size_t end = nsio->res.end - end_trunc;
struct vmem_altmap __altmap = {
.base_pfn = init_altmap_base(base),
.reserve = init_altmap_reserve(base),
.end_pfn = PHYS_PFN(end),
};
memcpy(res, &nsio->res, sizeof(*res));
......
......@@ -34,7 +34,7 @@ static int nd_region_probe(struct device *dev)
if (rc)
return rc;
if (is_nd_pmem(&nd_region->dev)) {
if (is_memory(&nd_region->dev)) {
struct resource ndr_res;
if (devm_init_badblocks(dev, &nd_region->bb))
......@@ -123,7 +123,7 @@ static void nd_region_notify(struct device *dev, enum nvdimm_event event)
struct nd_region *nd_region = to_nd_region(dev);
struct resource res;
if (is_nd_pmem(&nd_region->dev)) {
if (is_memory(&nd_region->dev)) {
res.start = nd_region->ndr_start;
res.end = nd_region->ndr_start +
nd_region->ndr_size - 1;
......
......@@ -632,11 +632,11 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
if (!is_memory(dev) && a == &dev_attr_dax_seed.attr)
return 0;
if (!is_nd_pmem(dev) && a == &dev_attr_badblocks.attr)
if (!is_memory(dev) && a == &dev_attr_badblocks.attr)
return 0;
if (a == &dev_attr_resource.attr) {
if (is_nd_pmem(dev))
if (is_memory(dev))
return 0400;
else
return 0;
......@@ -1168,6 +1168,9 @@ EXPORT_SYMBOL_GPL(nvdimm_has_cache);
bool is_nvdimm_sync(struct nd_region *nd_region)
{
if (is_nd_volatile(&nd_region->dev))
return true;
return is_nd_pmem(&nd_region->dev) &&
!test_bit(ND_REGION_ASYNC, &nd_region->flags);
}
......
......@@ -177,6 +177,10 @@ static int __nvdimm_security_unlock(struct nvdimm *nvdimm)
|| !nvdimm->sec.flags)
return -EIO;
/* No need to go further if security is disabled */
if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags))
return 0;
if (test_bit(NDD_SECURITY_OVERWRITE, &nvdimm->flags)) {
dev_dbg(dev, "Security operation in progress.\n");
return -EBUSY;
......
......@@ -108,7 +108,12 @@ static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
if (transparent_hugepage_flags & (1 << TRANSPARENT_HUGEPAGE_FLAG))
return true;
/*
* For dax vmas, try to always use hugepage mappings. If the kernel does
* not support hugepages, fsdax mappings will fallback to PAGE_SIZE
* mappings, and device-dax namespaces, that try to guarantee a given
* mapping size, will fail to enable
*/
if (vma_is_dax(vma))
return true;
......
......@@ -17,6 +17,7 @@ struct device;
*/
struct vmem_altmap {
const unsigned long base_pfn;
const unsigned long end_pfn;
const unsigned long reserve;
unsigned long free;
unsigned long align;
......
......@@ -4,6 +4,7 @@
*/
#ifndef __NFIT_TEST_H__
#define __NFIT_TEST_H__
#include <linux/acpi.h>
#include <linux/list.h>
#include <linux/uuid.h>
#include <linux/ioport.h>
......@@ -202,9 +203,6 @@ struct nd_intel_lss {
__u32 status;
} __packed;
union acpi_object;
typedef void *acpi_handle;
typedef struct nfit_test_resource *(*nfit_test_lookup_fn)(resource_size_t);
typedef union acpi_object *(*nfit_test_evaluate_dsm_fn)(acpi_handle handle,
const guid_t *guid, u64 rev, u64 func,
......
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