Matthew Garrett 2a6b69765a ACPI: Store NVS state even when entering suspend to RAM
https://bugzilla.kernel.org/show_bug.cgi?id=13931 describes a bug where
a system fails to successfully resume after the second suspend. Maxim
Levitsky discovered that this could be rectified by forcibly saving
and restoring the ACPI non-volatile state. The spec indicates that this
is only required for S4, but testing the behaviour of Windows by adding
an ACPI NVS region to qemu's e820 map and registering a custom memory
read/write handler reveals that it's saved and restored even over suspend
to RAM. We should mimic that behaviour to avoid other broken platforms.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2010-06-10 11:03:15 -04:00
..
2010-05-20 01:02:55 -04:00
2010-04-04 00:50:01 -04:00
2010-04-23 02:08:44 +02:00