Messages in this thread | | | From | Michael Kerrisk <> | Date | Sat, 19 Jun 2010 16:17:24 +0200 | Subject | Re: [PATCH] [31/31] HWPOISON: Add a madvise() injector for soft page offlining |
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Hi Andi,
On Sat, Jun 19, 2010 at 4:09 PM, Andi Kleen <andi@firstfloor.org> wrote: > On Sat, Jun 19, 2010 at 03:43:28PM +0200, Michael Kerrisk wrote: >> Is there a userspace operation to unpoison (i.e., reverse MADV_SOFT_OFFLINE)? > > Yes, but it's only a debugfs interface currently.
Okay -- thanks.
>> I ask because I wondered if there is something additional to be documented. > > I don't think debugfs needs manpages atm.
Okay.
I edited your text somewhat. Could you please review the below.
Cheers,
Michael
.TP .BR MADV_SOFT_OFFLINE " (Since Linux 2.6.33) Soft offline the pages in the range specified by .I addr and .IR length . This memory of each page in the specified range is copied to a new page, and the original page is offlined (i.e., no longer used, and taken out of normal memory management). The effect of the .B MADV_SOFT_OFFLINE operation is normally invisible to (i.e., does not change the semantics of) the calling process. This feature is intended for testing of memory error-handling code; it is only available if the kernel was configured with .BR CONFIG_MEMORY_FAILURE .
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