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Date:      Tue, 25 Jan 2005 11:19:40 +0900
From:      takawata@jp.freebsd.org
To:        Christian Laursen <xi@borderworlds.dk>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Resuming from a crashdump
Message-ID:  <200501250219.LAA27674@axe-inc.co.jp>
In-Reply-To: Your message of "24 Jan 2005 20:22:27 %2B0100." <86pszu639o.fsf@borg.borderworlds.dk>

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In message <86pszu639o.fsf@borg.borderworlds.dk>, Christian Laursen wrote:
>I was thinking about software suspend and got this crazy idea.

Not so crazy Idea.

>I have no idea if this is possible or total madness but here
>goes anyway.
>
>The idea would be to force the system to "crash" and make a
>dump on a dedicated partition. On boot after initializing devices
>but before mounting /, the kernel would check that partition and
>if it found a dump there restore it to the machine's memory,
>reinitialize devices and continue where it left off.
>
>Any thoughts? Could this be done or would an entirely different
>approach be better?

OS-initiated ACPI S4 sleep may be implemented in the way like this.




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