Messages in this thread | | | Date | Tue, 01 May 2012 22:05:55 +0400 | From | Konstantin Khlebnikov <> | Subject | Re: [PATCH RFC 3/3] proc/smaps: show amount of hwpoison pages |
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KOSAKI Motohiro wrote: > On Mon, Apr 30, 2012 at 7:29 AM, Konstantin Khlebnikov > <khlebnikov@openvz.org> wrote: >> This patch adds line "HWPoinson:<size> kB" into /proc/pid/smaps if >> CONFIG_MEMORY_FAILURE=y and some HWPoison pages were found. >> This may be useful for searching applications which use a broken memory. > > I dislike "maybe useful" claim. If we don't know exact motivation of a feature, > we can't maintain them especially when a bugfix can't avoid ABI change. > > Please write down exact use case.
I don't know how to exactly use this hw-poison stuff, but smaps suppose to export state of ptes in vma. It seems to rational to show also hw-poisoned ptes, since kernel has this feature and pte can be in hw-poisoned state.
and now everyone can easily find them: # sudo grep HWPoison /proc/*/smaps
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