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Joseph Cihula 86886e55b2 x86, intel_txt: Intel TXT Sx shutdown support 
Support for graceful handling of sleep states (S3/S4/S5) after an Intel(R) TXT launch.

Without this patch, attempting to place the system in one of the ACPI sleep
states (S3/S4/S5) will cause the TXT hardware to treat this as an attack and
will cause a system reset, with memory locked.  Not only may the subsequent
memory scrub take some time, but the platform will be unable to enter the
requested power state.

This patch calls back into the tboot so that it may properly and securely clean
up system state and clear the secrets-in-memory flag, after which it will place
the system into the requested sleep state using ACPI information passed by the kernel.

 arch/x86/kernel/smpboot.c     |    2 ++
 drivers/acpi/acpica/hwsleep.c |    3 +++
 kernel/cpu.c                  |    7 ++++++-
 3 files changed, 11 insertions(+), 1 deletion(-)

Signed-off-by: Joseph Cihula <joseph.cihula@intel.com>
Signed-off-by: Shane Wang <shane.wang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-21 11:50:04 -07:00
..
acpica x86, intel_txt: Intel TXT Sx shutdown support 2009-07-21 11:50:04 -07:00
ac.c ACPI: ac: use .notify method instead of installing handler directly 2009-06-18 00:13:14 -04:00
acpi_memhotplug.c
battery.c ACPI: battery: fix CONFIG_ACPI_PROCFS_POWER=n build warning 2009-06-18 00:38:27 -04:00
blacklist.c ACPI: DMI to disable Vista compatibility on some Sony laptops 2009-06-23 23:32:47 -04:00
bus.c ACPI: use handle, not device, in system notification path 2009-06-18 00:13:15 -04:00
button.c ACPI: button: remove control method/fixed hardware distinctions 2009-04-11 00:36:41 -04:00
cm_sbs.c
container.c
debug.c Merge branch 'acpi-modparam' into release 2009-04-05 01:45:50 -04:00
dock.c Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
ec.c ACPI: EC: Fix ACPI EC resume non-query interrupt message 2009-04-23 23:56:57 -04:00
event.c
fan.c Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
glue.c ACPI: kill acpi_get_physical_pci_device() 2009-06-17 23:32:24 -04:00
internal.h ACPI: call acpi_wakeup_device_init() explicitly rather than as initcall 2009-03-27 12:51:31 -04:00
Kconfig PCI: drivers/pci/slot.c should depend on CONFIG_SYSFS 2009-06-18 13:57:24 -07:00
Makefile Merge branch 'async-battery' into release 2009-04-05 01:48:46 -04:00
numa.c x86, ACPI: add support for x2apic ACPI extensions 2009-04-03 20:08:12 -04:00
osl.c ACPI: fix a deadlock in hotplug case 2009-06-23 23:23:14 -04:00
pci_bind.c ACPI: kill acpi_get_pci_id 2009-06-17 23:32:23 -04:00
pci_irq.c Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', 'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release 2009-06-24 01:19:50 -04:00
pci_link.c ACPI: pci_link: simplify list of link devices 2009-03-17 01:53:29 -04:00
pci_root.c ACPI: video: prevent NULL deref in acpi_get_pci_dev() 2009-06-26 00:23:42 -04:00
pci_slot.c PCI: pci_slot: grab refcount on slot's bus 2009-04-06 11:31:14 -07:00
power.c ACPI: don't check power state after _ON/_OFF 2009-05-27 21:45:53 -04:00
proc.c ACPI: convert acpi_device_lock spinlock to mutex 2009-04-07 00:02:40 -04:00
processor_core.c Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', 'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release 2009-06-24 01:19:50 -04:00
processor_idle.c Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', 'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release 2009-06-24 01:19:50 -04:00
processor_perflib.c ACPI: sanity check _PSS frequency to prevent cpufreq crash 2009-05-29 20:45:58 -04:00
processor_thermal.c Merge branch 'constify' into release 2009-04-05 01:51:16 -04:00
processor_throttling.c ACPI processor: remove spurious newline from warning message 2009-05-29 21:26:26 -04:00
reboot.c
sbs.c Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
sbshc.c
sbshc.h
scan.c Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', 'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release 2009-06-24 01:19:50 -04:00
sleep.c Merge branch 'bugzilla-13041' into release 2009-04-24 01:35:24 -04:00
sleep.h ACPI: convert acpi_device_lock spinlock to mutex 2009-04-07 00:02:40 -04:00
system.c ACPI: add /sys/firmware/acpi/interrupts/sci_not counter 2009-04-21 00:35:47 -04:00
tables.c Merge branch 'linus' into release 2009-04-05 02:14:15 -04:00
thermal.c thermal: Fix polling frequency for systems without passive cooling 2009-04-18 01:05:23 -04:00
utils.c
video_detect.c ACPI: video: convert to acpi_get_pci_dev 2009-06-17 23:32:23 -04:00
video.c Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', 'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release 2009-06-24 01:19:50 -04:00
wakeup.c ACPI: convert acpi_device_lock spinlock to mutex 2009-04-07 00:02:40 -04:00