Stefan Bader 9855d8ce41 ACPI: Check MSR valid bit before using P-state frequencies ... To fix incorrect P-state frequencies which can happen on some AMD systems f594065faf "ACPI: Add fixups for AMD P-state figures" introduced a quirk to obtain the correct values by reading from AMD specific MSRs. This did cause a regression when running a kernel using that quirk under Xen which does (currently) not pass through MSR reads to the HW. Instead the guest gets a 0 in return. And this seems to cause a failure to initialize the ondemand governour (hard to say for sure as all P-states appear to run at the same frequency). While this should also be fixed in the hypervisor (to allow a guest to read that MSR), this patch is intended to work around the issue in the meantime. In discussion it turned out that indeed real HW/BIOSes may choose to not set the valid bit and thus mark the P-state as invalid. So this could be considered a fix for broken BIOSes that also works around the issue on Xen. Signed-off-by: Stefan Bader <stefan.bader@canonical.com> Cc: 3.7+ <stable@vger.kernel.org> Acked-by: Borislav Petkov <bp@suse.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2013-01-22 13:37:21 +01:00
..
acpica	ACPICA: Remove useless mini-C library.	2013-01-03 13:09:10 +01:00
apei	ACPI, APEI: Fixup incorrect 64-bit access width firmware bug	2013-01-19 01:34:43 +01:00
ac.c
acpi_i2c.c
acpi_ipmi.c
acpi_memhotplug.c	ACPI / memhotplug: remove redundant logic of acpi memory hotadd	2013-01-03 13:10:21 +01:00
acpi_pad.c
acpi_platform.c
battery.c
bgrt.c
blacklist.c
bus.c
button.c
cm_sbs.c
container.c
custom_method.c
debugfs.c
device_pm.c	ACPI / PM: Do not apply ACPI_SUCCESS() to acpi_bus_get_device() result	2013-01-03 13:10:21 +01:00
dock.c
ec_sys.c
ec.c
event.c
fan.c
glue.c	ACPI / glue: Fix build with ACPI_GLUE_DEBUG set	2013-01-12 14:00:06 +01:00
hed.c	Driver core updates for 3.8-rc1	2012-12-11 13:13:55 -08:00
internal.h	Merge branch 'acpi-general'	2012-11-29 21:43:06 +01:00
Kconfig	Merge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-14 10:03:23 -08:00
Makefile
numa.c
nvs.c
osl.c	Merge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-14 10:03:23 -08:00
pci_bind.c
pci_irq.c	PCI changes for the v3.8 merge window:	2012-12-13 12:14:47 -08:00
pci_link.c
pci_root.c	PCI changes for the v3.8 merge window:	2012-12-13 12:14:47 -08:00
pci_slot.c
power.c	ACPI / power: Remove useless message from device registering routine	2013-01-03 13:10:22 +01:00
proc.c
processor_core.c
processor_driver.c
processor_idle.c	ACPI / processor: Get power info before updating the C-states	2013-01-19 00:28:22 +01:00
processor_perflib.c	ACPI: Check MSR valid bit before using P-state frequencies	2013-01-22 13:37:21 +01:00
processor_thermal.c
processor_throttling.c
reboot.c
resource.c
sbs.c
sbshc.c
sbshc.h
scan.c	ACPI / scan: Do not use dummy HID for system bus ACPI nodes	2013-01-04 23:00:54 +01:00
sleep.c	Merge branch 'acpi-general'	2012-12-04 13:46:08 +01:00
sleep.h
sysfs.c
tables.c
thermal.c	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2012-12-12 07:57:13 -08:00
utils.c
video_detect.c	ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist	2012-11-30 13:02:50 +01:00
video.c	ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000	2012-12-04 23:30:19 +01:00
wakeup.c