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| author | Andi Kleen <andi@firstfloor.org> | 2009-09-16 11:50:17 +0200 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2009-09-16 11:50:17 +0200 |
| commit | 9893e49d64a4874ea67849ee2cfbf3f3d6817573 (patch) | |
| tree | 2bf3c7950cdae1c1ed03a513a6690d95f0c02d5c /mm/Kconfig | |
| parent | f590f333fb15444d2971f979d434ecad56c09698 (diff) | |
| download | lwn-9893e49d64a4874ea67849ee2cfbf3f3d6817573.tar.gz lwn-9893e49d64a4874ea67849ee2cfbf3f3d6817573.zip | |
HWPOISON: Add madvise() based injector for hardware poisoned pages v4
Impact: optional, useful for debugging
Add a new madvice sub command to inject poison for some
pages in a process' address space. This is useful for
testing the poison page handling.
This patch can allow root to tie up large amounts of memory.
I got feedback from container developers and they didn't see any
problem.
v2: Use write flag for get_user_pages to make sure to always get
a fresh page
v3: Don't request write mapping (Fengguang Wu)
v4: Move MADV_* number to avoid conflict with KSM (Hugh Dickins)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/Kconfig')
0 files changed, 0 insertions, 0 deletions