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

Browse Source 
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.
This commit is contained in:
Linus Torvalds
2019-09-29 10:33:41 -07:00
parent 939ca9f175 4c806b897d
commit a3c0e7b1fe
15 changed files with 110 additions and 51 deletions
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2
arch/powerpc/mm/book3s64/hash_pgtable.c
View File

@@ -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

7
arch/powerpc/mm/book3s64/radix_pgtable.c
View File

@@ -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,

17
arch/powerpc/mm/init_64.c
View File

@@ -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");