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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2017-11-27 09:11:48 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-01-14 21:11:55 +0100 |
| commit | 87e65d05bb0a18e00655a58159790bc8d38e219e (patch) | |
| tree | c18d6ffbc972e2de1017efcdf5c57fdef952bdb4 /arch | |
| parent | 11c8dc419bbc7b5acef812043feefc53c45ef558 (diff) | |
| download | linux-stable-87e65d05bb0a18e00655a58159790bc8d38e219e.tar.gz linux-stable-87e65d05bb0a18e00655a58159790bc8d38e219e.tar.bz2 linux-stable-87e65d05bb0a18e00655a58159790bc8d38e219e.zip | |
x86/jailhouse: Enable PMTIMER
Jailhouse exposes the PMTIMER as only reference clock to all cells. Pick
up its address from the setup data. Allow to enable the Linux support of
it by relaxing its strict dependency on ACPI.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: jailhouse-dev@googlegroups.com
Link: https://lkml.kernel.org/r/6d5c3fadd801eb3fba9510e2d3db14a9c404a1a0.1511770314.git.jan.kiszka@siemens.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/jailhouse.c | 4 |
2 files changed, 5 insertions, 0 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) |