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author | Thomas Gleixner <tglx@linutronix.de> | 2018-01-15 12:24:34 +0300 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2018-01-15 12:26:18 +0300 |
commit | be6d447e4f9c5cc6d48aabc3ec362b6a559c3fd7 (patch) | |
tree | 0bbab8b49e0b64e521374cac9385d047ff0086af /arch/x86 | |
parent | a0c01e4bb92d085462c293091a521cb9e7000371 (diff) | |
download | linux-be6d447e4f9c5cc6d48aabc3ec362b6a559c3fd7.tar.xz |
x86/jailhouse: Hide x2apic code when CONFIG_X86_X2APIC=n
x2apic_phys is not available when CONFIG_X86_X2APIC=n and the code is not
optimized out resulting in a build fail:
jailhouse.c: In function ‘jailhouse_get_smp_config’:
jailhouse.c:73:3: error: ‘x2apic_phys’ undeclared (first use in this function)
Fixes: 11c8dc419bbc ("x86/jailhouse: Enable APIC and SMP support")
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: jailhouse-dev@googlegroups.com
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/kernel/jailhouse.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index d6d5976a9b51..7ade152133c7 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -52,6 +52,24 @@ static unsigned long jailhouse_get_tsc(void) return precalibrated_tsc_khz; } +static void __init jailhouse_x2apic_init(void) +{ +#ifdef CONFIG_X86_X2APIC + if (!x2apic_enabled()) + return; + /* + * We do not have access to IR inside Jailhouse non-root cells. So + * we have to run in physical mode. + */ + x2apic_phys = 1; + /* + * This will trigger the switch to apic_x2apic_phys. Empty OEM IDs + * ensure that only this APIC driver picks up the call. + */ + default_acpi_madt_oem_check("", ""); +#endif +} + static void __init jailhouse_get_smp_config(unsigned int early) { struct ioapic_domain_cfg ioapic_cfg = { @@ -65,20 +83,7 @@ static void __init jailhouse_get_smp_config(unsigned int early) }; unsigned int cpu; - if (x2apic_enabled()) { - /* - * We do not have access to IR inside Jailhouse non-root cells. - * So we have to run in physical mode. - */ - x2apic_phys = 1; - - /* - * This will trigger the switch to apic_x2apic_phys. - * Empty OEM IDs ensure that only this APIC driver picks up - * the call. - */ - default_acpi_madt_oem_check("", ""); - } + jailhouse_x2apic_init(); register_lapic_address(0xfee00000); |