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 / PM: Fix unused function warnings for CONFIG_PM_SLEEP	2012-08-10 13:35:32 +02:00
acpi_i2c.c	i2c / ACPI: add ACPI enumeration support	2012-11-23 12:23:40 +01:00
acpi_ipmi.c	IPMI/ACPI: Add the IPMI opregion driver to enable ACPI to access BMC controller	2010-12-14 00:22:14 -05:00
acpi_memhotplug.c	ACPI / memhotplug: remove redundant logic of acpi memory hotadd	2013-01-03 13:10:21 +01:00
acpi_pad.c	ACPI: strict_strtoul() and printk() cleanup in acpi_pad	2012-11-15 00:16:00 +01:00
acpi_platform.c	ACPI / platform: include missed header into acpi_platform.c	2012-11-27 13:44:58 +01:00
battery.c	ACPI / battery: Correct battery capacity values on Thinkpads	2012-11-16 22:28:58 +01:00
bgrt.c	efi: Fix the ACPI BGRT driver for images located in EFI boot services memory	2012-09-29 12:21:03 -07:00
blacklist.c	acpi: delete module.h include from files explicitly not needing it	2011-10-31 19:30:33 -04:00
bus.c	ACPI / PM: Add check preventing transitioning to non-D0 state from D3.	2012-11-16 02:46:28 +01:00
button.c	ACPI/button: convert to module_acpi_driver()	2012-09-21 13:38:29 -04:00
cm_sbs.c	ACPI: Move definition of PREFIX from acpi_bus.h to internal..h	2009-08-28 19:57:27 -04:00
container.c	ACPI: Update Container hotplug error messages	2012-11-21 23:20:23 +01:00
custom_method.c	ACPI: Split out custom_method functionality into an own driver	2011-05-29 01:50:40 -04:00
debugfs.c	acpi: add export.h to files using THIS_MODULE/EXPORT_SYMBOL	2011-10-31 19:30:34 -04:00
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	ACPI: Update Dock hotplug error messages	2012-11-21 23:20:23 +01:00
ec_sys.c	simple_open: automatically convert to simple_open()	2012-04-05 15:25:50 -07:00
ec.c	ACPI / EC: Don't count a SCI interrupt as a false one	2012-11-15 00:15:59 +01:00
event.c	acpi: add export.h to files using THIS_MODULE/EXPORT_SYMBOL	2011-10-31 19:30:34 -04:00
fan.c	ACPI/fan: convert to module_acpi_driver()	2012-09-21 13:39:03 -04:00
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	Merge branch 'acpi-dev-pm' into acpi-enumeration	2012-11-27 13:42:42 +01:00
numa.c	ACPI: Only count valid srat memory structures	2012-08-03 00:15:53 -04:00
nvs.c	ACPI / PM: print physical addresses consistently with other parts of kernel	2012-03-30 02:46:57 -04:00
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	Merge branch 'pci/misc' into next	2012-11-13 14:34:06 -07:00
pci_irq.c	PCI changes for the v3.8 merge window:	2012-12-13 12:14:47 -08:00
pci_link.c	acpi: use KERN_CONT in printk() continuation lines	2012-05-08 08:55:26 -07:00
pci_root.c	PCI changes for the v3.8 merge window:	2012-12-13 12:14:47 -08:00
pci_slot.c	PCI/ACPI: Use acpi_pci_root info rather than looking it up again	2012-09-24 15:29:40 -06:00
power.c	ACPI / power: Remove useless message from device registering routine	2013-01-03 13:10:22 +01:00
proc.c	ACPI: drop unnecessary local variable from acpi_system_write_wakeup_device()	2012-11-22 23:20:31 +01:00
processor_core.c	cpufreq / ACPI: Fix not loading acpi-cpufreq driver regression	2012-07-12 22:39:32 +02:00
processor_driver.c	ACPI: Update CPU hotplug error messages	2012-11-21 23:20:22 +01:00
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	ACPI: Do cpufreq clamping for throttling per package v2	2012-03-22 02:16:14 -04:00
processor_throttling.c	ACPI throttling: fix endian bug in acpi_read_throttling_status()	2012-03-30 16:06:12 -04:00
reboot.c	Revert "ACPI: ignore FADT reset-reg-sup flag"	2012-04-20 11:19:35 -07:00
resource.c	ACPI: remove unnecessary INIT_LIST_HEAD	2012-11-27 13:49:36 +01:00
sbs.c	ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP	2012-08-10 13:35:32 +02:00
sbshc.c	ACPI/sbshc: convert to module_acpi_driver()	2012-09-21 13:39:40 -04:00
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	ACPI: static sleep_states[] and acpi_gts_bfs_check	2010-10-19 13:44:37 -04:00
sysfs.c	ACPICA: Fix AcpiSrc caused divergences.	2012-11-15 00:31:23 +01:00
tables.c	ACPI: Harden acpi_table_parse_entries() against BIOS bug	2012-10-06 15:51:49 -04:00
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	ACPI: Add acpi_handle_<level>() interfaces	2012-11-21 23:20:22 +01:00
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	ACPI / Wakeup: Enable button GPEs unconditionally during initialization	2011-02-12 01:39:53 +01:00