1What:		/sys/devices/system/memory/soft_offline_page
2Date:		Sep 2009
3KernelVersion:	2.6.33
4Contact:	andi@firstfloor.org
5Description:
6		Soft-offline the memory page containing the physical address
7		written into this file. Input is a hex number specifying the
8		physical address of the page. The kernel will then attempt
9		to soft-offline it, by moving the contents elsewhere or
10		dropping it if possible. The kernel will then be placed
11		on the bad page list and never be reused.
12
13		The offlining is done in kernel specific granuality.
14		Normally it's the base page size of the kernel, but
15		this might change.
16
17		The page must be still accessible, not poisoned. The
18		kernel will never kill anything for this, but rather
19		fail the offline.  Return value is the size of the
20		number, or a error when the offlining failed.  Reading
21		the file is not allowed.
22
23What:		/sys/devices/system/memory/hard_offline_page
24Date:		Sep 2009
25KernelVersion:	2.6.33
26Contact:	andi@firstfloor.org
27Description:
28		Hard-offline the memory page containing the physical
29		address written into this file. Input is a hex number
30		specifying the physical address of the page. The
31		kernel will then attempt to hard-offline the page, by
32		trying to drop the page or killing any owner or
33		triggering IO errors if needed.  Note this may kill
34		any processes owning the page. The kernel will avoid
35		to access this page assuming it's poisoned by the
36		hardware.
37
38		The offlining is done in kernel specific granuality.
39		Normally it's the base page size of the kernel, but
40		this might change.
41
42		Return value is the size of the number, or a error when
43		the offlining failed.
44		Reading the file is not allowed.
45