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-What: /sys/devices/system/memory/soft_offline_page
-Date: Sep 2009
-KernelVersion: 2.6.33
-Contact: andi@firstfloor.org
-Description:
- Soft-offline the memory page containing the physical address
- written into this file. Input is a hex number specifying the
- physical address of the page. The kernel will then attempt
- to soft-offline it, by moving the contents elsewhere or
- dropping it if possible. The kernel will then be placed
- on the bad page list and never be reused.
-
- The offlining is done in kernel specific granuality.
- Normally it's the base page size of the kernel, but
- this might change.
-
- The page must be still accessible, not poisoned. The
- kernel will never kill anything for this, but rather
- fail the offline. Return value is the size of the
- number, or a error when the offlining failed. Reading
- the file is not allowed.
-
-What: /sys/devices/system/memory/hard_offline_page
-Date: Sep 2009
-KernelVersion: 2.6.33
-Contact: andi@firstfloor.org
-Description:
- Hard-offline the memory page containing the physical
- address written into this file. Input is a hex number
- specifying the physical address of the page. The
- kernel will then attempt to hard-offline the page, by
- trying to drop the page or killing any owner or
- triggering IO errors if needed. Note this may kill
- any processes owning the page. The kernel will avoid
- to access this page assuming it's poisoned by the
- hardware.
-
- The offlining is done in kernel specific granuality.
- Normally it's the base page size of the kernel, but
- this might change.
-
- Return value is the size of the number, or a error when
- the offlining failed.
- Reading the file is not allowed.