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authorDan Williams <dan.j.williams@intel.com>2016-01-15 16:56:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-15 17:56:32 -0800
commitd2c0f041e1bb1260629ecea2161adb9778945aa3 (patch)
treeea5872316fdab194db4faa7a322c6d50652a1c72 /arch
parent4b94ffdc4163bae1ec73b6e977ffb7a7da3d06d3 (diff)
downloadop-kernel-dev-d2c0f041e1bb1260629ecea2161adb9778945aa3.zip
op-kernel-dev-d2c0f041e1bb1260629ecea2161adb9778945aa3.tar.gz
libnvdimm, pfn, pmem: allocate memmap array in persistent memory
Use the new vmem_altmap capability to enable the pmem driver to arrange for a struct page memmap to be established in persistent memory. [linux@roeck-us.net: mn10300: declare __pfn_to_phys() to fix build error] Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/include/asm/page.h1
-rw-r--r--arch/mn10300/include/asm/page.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/page.h b/arch/ia64/include/asm/page.h
index ec48bb9..e8c486e 100644
--- a/arch/ia64/include/asm/page.h
+++ b/arch/ia64/include/asm/page.h
@@ -105,6 +105,7 @@ extern struct page *vmem_map;
#ifdef CONFIG_DISCONTIGMEM
# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn) (vmem_map + (pfn))
+# define __pfn_to_phys(pfn) PFN_PHYS(pfn)
#else
# include <asm-generic/memory_model.h>
#endif
diff --git a/arch/mn10300/include/asm/page.h b/arch/mn10300/include/asm/page.h
index 8288e12..3810a6f 100644
--- a/arch/mn10300/include/asm/page.h
+++ b/arch/mn10300/include/asm/page.h
@@ -107,6 +107,7 @@ static inline int get_order(unsigned long size)
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
#define pfn_to_page(pfn) (mem_map + ((pfn) - __pfn_disp))
#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + __pfn_disp)
+#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
#define pfn_valid(pfn) \
({ \
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