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Message-Id: <200709041932.21281.lenb@kernel.org> Date: Tue, 4 Sep 2007 19:32:20 -0400 From: Len Brown <lenb@...nel.org> To: linux-pm@...ts.linux-foundation.org Cc: "Rafael J. Wysocki" <rjw@...k.pl>, LKML <linux-kernel@...r.kernel.org>, Nigel Cunningham <nigel@...el.suspend2.net>, Pavel Machek <pavel@....cz> Subject: Re: Suspend and hibernation status report On Friday 27 July 2007 04:57, Rafael J. Wysocki wrote: Thanks for writing this, Rafael. > * system hibernation state - state, in which the system's processors are off and > its main memory is not powered, but the information necessary for continuing > the computations carried out when the system was last in a working state is > preserved in a storage space, such as a disk > * ACPI S4 state - system hibernation state, in which some information is > preserved by the ACPI platform, in accordance with the ACPI specification "some information is preserved by the ACPI platform" is sort of mis-leading. What ACPI adds to the hibernate flow is some platform hooks to handle wakeup devices, and a platform hook for the actual sleep request. I'm not aware of any information saved by ACPI during S4 that is not saved were the hibernate to be done with "acpi=off". thanks, -Len - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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