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Re: [PATCH] PM / hibernate: Image data protection during restoration

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  Re: [PATCH] PM / hibernate: Image data protection during restoration Pavel Machek <pavel@ucw.cz> - 2016-08-05 15:50 +0200

#1457111 — Re: [PATCH] PM / hibernate: Image data protection during restoration

On Tue 2016-07-05 14:34:38, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> 
> Make it possible to protect all pages holding image data during
> hibernate image restoration by marking them read-only (so as to
> catch attempts to write to those pages after image data have been
> stored in them).
> 
> This adds overhead to image restoration code (it may cause large
> page mappings to be split as a result of page flags changes) and
> the errors it protects against should never happen in theory, so
> the feature is only active after passing hibernate=protect_image
> to the command line of the restore kernel.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Acked-by: Pavel Machek <pavel@ucw.cz>

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