Hi! > According to the ACPI spec, ACPI NVS memory region is required to > be saved/restored by OS during hibernation. > > Section 15.3.2 ACPI Spec 3.0b, > "OSPM will call the _PTS control method some time before entering > a sleeping state, to allow the platform???s AML code to update > this memory image before entering the sleeping state. > After the system awakes from an S4 state, OSPM will restore this > memory area and call the _WAK control method to enable the BIOS > to reclaim its memory image." > > This patch set add the mechanism to save/restore ACPI NVS memory > during hibernation. > > Patch 01: call platform_begin before swsusp_shrink_memory. > So that we can allocate enough pages for ACPI NVS memory > before shrink the memory. Why is it neccessary to allocate memory for a copy? We should be able to save ACPI NVS area same way we are saving kernel pages, no? -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
