[Qemu-devel] [rfc patch qemu 0/4] s3 improvements

[Gerd Hoffmann]

  Hi,

This patch series (and the seabios patch series following in a minute)
improve s3 support in qemu.

The patches allocates a bunch of acpi gpe bits for s3 wakeup of piix
chipset devices (ps/2 keyboard, ps/2 mouse, serial port, uhci
controller) and does the windup needed so the guest can enable+disable
wakeup per device using apci.

With this patch series applied /proc/acpi/wakeup inside the guest looks
like this ...

    Device  S-state   Status   Sysfs node
    UHCI      S3    *enabled   pci:0000:00:01.2
    KBD       S3    *enabled   pnp:00:02
    MOU       S3    *disabled  pnp:00:03
    COM1      S3    *disabled  pnp:00:05

... and you can use "echo $device > /proc/acpi/wakeup" to toggle
enabled/disabled.

comments?
  Gerd

Gerd Hoffmann (4):
  wakeup: add acpi gpe wakeup reasons
  wakeup: make ps/2 configurable
  wakeup: make serial configurable
  wakeup: uhci support

 hw/acpi.c         |   26 ++++++++++++++++++++++++++
 hw/ps2.c          |    4 ++--
 hw/serial.c       |   10 +++++++++-
 hw/usb/hcd-uhci.c |   35 +++++++++++++++++++++++++++++++++++
 sysemu.h          |    4 ++++
 5 files changed, 76 insertions(+), 3 deletions(-)