tree 6c234e07d3c34e633e29d62702c60638abb5303e
parent 61b7b67df2ed10ff5ab0dcc649080bca782fdc5e
author Jan Kiszka <jan.kiszka@siemens.com> 1328124698 +0100
committer Anthony Liguori <aliguori@us.ibm.com> 1329494302 -0600

hpet: Save/restore cached RTC IRQ level

In legacy mode, the HPET suppresses the RTC interrupt delivery via IRQ
8 but keeps track of the RTC output level and applies it when legacy
mode is turned off again. This value has to be preserved across save/
restore as it cannot be reconstructed otherwise.

To document that a raised rtc_irq_level won't survive a vmload without
a hpet/rtc_irq_level subsection, add an explicit clearing to the reset
handler.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>