1/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws 2 * which needs to alter them. */ 3 4static inline void smpboot_clear_io_apic_irqs(void) 5{ 6#ifdef CONFIG_X86_IO_APIC 7 io_apic_irqs = 0; 8#endif 9} 10 11static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip) 12{ 13 CMOS_WRITE(0xa, 0xf); 14 local_flush_tlb(); 15 pr_debug("1.\n"); 16 *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) = 17 start_eip >> 4; 18 pr_debug("2.\n"); 19 *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_low)) = 20 start_eip & 0xf; 21 pr_debug("3.\n"); 22} 23 24static inline void smpboot_restore_warm_reset_vector(void) 25{ 26 /* 27 * Install writable page 0 entry to set BIOS data area. 28 */ 29 local_flush_tlb(); 30 31 /* 32 * Paranoid: Set warm reset code and vector here back 33 * to default values. 34 */ 35 CMOS_WRITE(0, 0xf); 36 37 *((volatile long *)phys_to_virt(apic->trampoline_phys_low)) = 0; 38} 39 40static inline void __init smpboot_setup_io_apic(void) 41{ 42#ifdef CONFIG_X86_IO_APIC 43 /* 44 * Here we can be sure that there is an IO-APIC in the system. Let's 45 * go and set it up: 46 */ 47 if (!skip_ioapic_setup && nr_ioapics) 48 setup_IO_APIC(); 49 else { 50 nr_ioapics = 0; 51 localise_nmi_watchdog(); 52 } 53#endif 54} 55 56static inline void smpboot_clear_io_apic(void) 57{ 58#ifdef CONFIG_X86_IO_APIC 59 nr_ioapics = 0; 60#endif 61} 62