diff options
| -rw-r--r-- | arch/x86/Kconfig | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/jailhouse.c | 4 | ||||
| -rw-r--r-- | drivers/acpi/Kconfig | 32 |
3 files changed, 21 insertions, 16 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index fbea8d15fcfb..a936e29245d0 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -799,6 +799,7 @@ config PARAVIRT_CLOCK config JAILHOUSE_GUEST bool "Jailhouse non-root cell support" depends on X86_64 + select X86_PM_TIMER ---help--- This option allows to run Linux as guest in a Jailhouse non-root cell. You can leave this option disabled if you only want to start diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index 57f49963d8dc..21c107770d67 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -8,6 +8,7 @@ * Jan Kiszka <jan.kiszka@siemens.com> */ +#include <linux/acpi_pmtmr.h> #include <linux/kernel.h> #include <asm/apic.h> #include <asm/cpu.h> @@ -91,6 +92,9 @@ static void __init jailhouse_init_platform(void) if (setup_data.compatible_version > JAILHOUSE_SETUP_REQUIRED_VERSION) panic("Jailhouse: Unsupported setup data structure"); + + pmtmr_ioport = setup_data.pm_timer_address; + pr_debug("Jailhouse: PM-Timer IO Port: %#x\n", pmtmr_ioport); } bool jailhouse_paravirt(void) diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 46505396869e..d650c5b6ec90 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -361,22 +361,6 @@ config ACPI_PCI_SLOT i.e., segment/bus/device/function tuples, with physical slots in the system. If you are unsure, say N. -config X86_PM_TIMER - bool "Power Management Timer Support" if EXPERT - depends on X86 - default y - help - The Power Management Timer is available on all ACPI-capable, - in most cases even if ACPI is unusable or blacklisted. - - This timing source is not affected by power management features - like aggressive processor idling, throttling, frequency and/or - voltage scaling, unlike the commonly used Time Stamp Counter - (TSC) timing source. - - You should nearly always say Y here because many modern - systems require this timer. - config ACPI_CONTAINER bool "Container and Module Devices" default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU) @@ -564,3 +548,19 @@ config TPS68470_PMIC_OPREGION using this, are probed. endif # ACPI + +config X86_PM_TIMER + bool "Power Management Timer Support" if EXPERT + depends on X86 && (ACPI || JAILHOUSE_GUEST) + default y + help + The Power Management Timer is available on all ACPI-capable, + in most cases even if ACPI is unusable or blacklisted. + + This timing source is not affected by power management features + like aggressive processor idling, throttling, frequency and/or + voltage scaling, unlike the commonly used Time Stamp Counter + (TSC) timing source. + + You should nearly always say Y here because many modern + systems require this timer. |