diff options
Diffstat (limited to 'arch/x86/kernel/apic/apic.c')
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 564d584c8b99..6eee777ca73c 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -99,6 +99,11 @@ static bool virt_ext_dest_id __ro_after_init; /* For parallel bootup. */ unsigned long apic_mmio_base __ro_after_init; +static inline bool apic_accessible(void) +{ + return x2apic_mode || apic_mmio_base; +} + /* * Map cpu index to physical APIC ID */ @@ -199,8 +204,6 @@ unsigned int lapic_timer_period = 0; static void apic_pm_activate(void); -static unsigned long apic_phys __ro_after_init; - /* * Get the LAPIC version */ @@ -1127,8 +1130,7 @@ void clear_local_APIC(void) int maxlvt; u32 v; - /* APIC hasn't been mapped yet */ - if (!x2apic_mode && !apic_phys) + if (!apic_accessible()) return; maxlvt = lapic_get_maxlvt(); @@ -1218,8 +1220,7 @@ void apic_soft_disable(void) */ void disable_local_APIC(void) { - /* APIC hasn't been mapped yet */ - if (!x2apic_mode && !apic_phys) + if (!apic_accessible()) return; apic_soft_disable(); @@ -2142,7 +2143,7 @@ void __init init_apic_mappings(void) static __init void apic_set_fixmap(void) { set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr); - apic_phys = apic_mmio_base = APIC_BASE; + apic_mmio_base = APIC_BASE; apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n", apic_mmio_base, mp_lapic_addr); apic_read_boot_cpu_id(false); @@ -2896,11 +2897,11 @@ early_param("apic", apic_set_verbosity); static int __init lapic_insert_resource(void) { - if (!apic_phys) + if (!apic_mmio_base) return -1; /* Put local APIC into the resource map. */ - lapic_resource.start = apic_phys; + lapic_resource.start = apic_mmio_base; lapic_resource.end = lapic_resource.start + PAGE_SIZE - 1; insert_resource(&iomem_resource, &lapic_resource); |