diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2015-04-03 12:05:28 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-05-27 21:46:05 -0400 |
| commit | ad5fb870c486d932a1749d7853dd70f436a7e03f (patch) | |
| tree | 68998840d8d8219e959e966c11c78f73327f7adf /arch/ia64 | |
| parent | f3b6ced236259a87829b829e8e542ff53bfb9a4f (diff) | |
e820, efi: add ACPI 6.0 persistent memory types
ACPI 6.0 formalizes e820-type-7 and efi-type-14 as persistent memory.
Mark it "reserved" and allow it to be claimed by a persistent memory
device driver.
This definition is in addition to the Linux kernel's existing type-12
definition that was recently added in support of shipping platforms with
NVDIMM support that predate ACPI 6.0 (which now classifies type-12 as
OEM reserved).
Note, /proc/iomem can be consulted for differentiating legacy
"Persistent Memory (legacy)" E820_PRAM vs standard "Persistent Memory"
E820_PMEM.
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Tested-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/efi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index c52d7540dc05..5f6be9dd6968 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -1223,6 +1223,10 @@ efi_initialize_iomem_resources(struct resource *code_resource, flags |= IORESOURCE_DISABLED; break; + case EFI_PERSISTENT_MEMORY: + name = "Persistent Memory"; + break; + case EFI_RESERVED_TYPE: case EFI_RUNTIME_SERVICES_CODE: case EFI_RUNTIME_SERVICES_DATA: |