Remove APIC version/cpu capability mpparse checking/printing ACPI went to great trouble to get the APIC version and CPU capabilities of different CPUs before passing them to the mpparser. But all that data was used was to print it out. Actually it even faked some data based on the boot cpu, not on the actual CPU being booted. Remove all this code because it's not needed. Cc: len.brown@intel.com Signed-off-by: Andi Kleen --- arch/x86_64/kernel/io_apic.c | 13 ---------- arch/x86_64/kernel/mpparse.c | 52 ++++++++++++++----------------------------- 2 files changed, 17 insertions(+), 48 deletions(-) Index: linux/arch/x86_64/kernel/io_apic.c =================================================================== --- linux.orig/arch/x86_64/kernel/io_apic.c +++ linux/arch/x86_64/kernel/io_apic.c @@ -1748,19 +1748,6 @@ device_initcall(ioapic_init_sysfs); #define IO_APIC_MAX_ID 0xFE -int __init io_apic_get_version (int ioapic) -{ - union IO_APIC_reg_01 reg_01; - unsigned long flags; - - spin_lock_irqsave(&ioapic_lock, flags); - reg_01.raw = io_apic_read(ioapic, 1); - spin_unlock_irqrestore(&ioapic_lock, flags); - - return reg_01.bits.version; -} - - int __init io_apic_get_redir_entries (int ioapic) { union IO_APIC_reg_01 reg_01; Index: linux/arch/x86_64/kernel/mpparse.c =================================================================== --- linux.orig/arch/x86_64/kernel/mpparse.c +++ linux/arch/x86_64/kernel/mpparse.c @@ -41,7 +41,6 @@ int acpi_found_madt; * Various Linux-internal data structures created from the * MP-table. */ -unsigned char apic_version [MAX_APICS]; DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES); int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 }; @@ -94,24 +93,21 @@ static int __init mpf_checksum(unsigned static void __cpuinit MP_processor_info (struct mpc_config_processor *m) { int cpu; - unsigned char ver; cpumask_t tmp_map; + char *bootup_cpu = ""; if (!(m->mpc_cpuflag & CPU_ENABLED)) { disabled_cpus++; return; } - printk(KERN_INFO "Processor #%d %d:%d APIC version %d\n", - m->mpc_apicid, - (m->mpc_cpufeature & CPU_FAMILY_MASK)>>8, - (m->mpc_cpufeature & CPU_MODEL_MASK)>>4, - m->mpc_apicver); - if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { - Dprintk(" Bootup CPU\n"); + bootup_cpu = " (Bootup-CPU)"; boot_cpu_id = m->mpc_apicid; } + + printk(KERN_INFO "Processor #%d%s\n", m->mpc_apicid, bootup_cpu); + if (num_processors >= NR_CPUS) { printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached." " Processor ignored.\n", NR_CPUS); @@ -129,17 +125,7 @@ static void __cpuinit MP_processor_info return; } #endif - ver = m->mpc_apicver; - physid_set(m->mpc_apicid, phys_cpu_present_map); - /* - * Validate version - */ - if (ver == 0x0) { - printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! fixing up to 0x10. (tell your hw vendor)\n", m->mpc_apicid); - ver = 0x10; - } - apic_version[m->mpc_apicid] = ver; if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { /* * bios_cpu_apicid is required to have processors listed @@ -179,8 +165,8 @@ static void __init MP_ioapic_info (struc if (!(m->mpc_flags & MPC_APIC_USABLE)) return; - printk("I/O APIC #%d Version %d at 0x%X.\n", - m->mpc_apicid, m->mpc_apicver, m->mpc_apicaddr); + printk("I/O APIC #%d at 0x%X.\n", + m->mpc_apicid, m->mpc_apicaddr); if (nr_ioapics >= MAX_IO_APICS) { printk(KERN_ERR "Max # of I/O APICs (%d) exceeded (found %d).\n", MAX_IO_APICS, nr_ioapics); @@ -413,13 +399,10 @@ static inline void __init construct_defa * 2 CPUs, numbered 0 & 1. */ processor.mpc_type = MP_PROCESSOR; - /* Either an integrated APIC or a discrete 82489DX. */ - processor.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01; + processor.mpc_apicver = 0; processor.mpc_cpuflag = CPU_ENABLED; - processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) | - (boot_cpu_data.x86_model << 4) | - boot_cpu_data.x86_mask; - processor.mpc_featureflag = boot_cpu_data.x86_capability[0]; + processor.mpc_cpufeature = 0; + processor.mpc_featureflag = 0; processor.mpc_reserved[0] = 0; processor.mpc_reserved[1] = 0; for (i = 0; i < 2; i++) { @@ -448,7 +431,7 @@ static inline void __init construct_defa ioapic.mpc_type = MP_IOAPIC; ioapic.mpc_apicid = 2; - ioapic.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01; + ioapic.mpc_apicver = 0; ioapic.mpc_flags = MPC_APIC_USABLE; ioapic.mpc_apicaddr = 0xFEC00000; MP_ioapic_info(&ioapic); @@ -640,12 +623,11 @@ void __cpuinit mp_register_lapic (u8 id, processor.mpc_type = MP_PROCESSOR; processor.mpc_apicid = id; - processor.mpc_apicver = GET_APIC_VERSION(apic_read(APIC_LVR)); + processor.mpc_apicver = 0; processor.mpc_cpuflag = (enabled ? CPU_ENABLED : 0); processor.mpc_cpuflag |= (boot_cpu ? CPU_BOOTPROCESSOR : 0); - processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) | - (boot_cpu_data.x86_model << 4) | boot_cpu_data.x86_mask; - processor.mpc_featureflag = boot_cpu_data.x86_capability[0]; + processor.mpc_cpufeature = 0; + processor.mpc_featureflag = 0; processor.mpc_reserved[0] = 0; processor.mpc_reserved[1] = 0; @@ -700,7 +682,7 @@ void __init mp_register_ioapic(u8 id, u3 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); mp_ioapics[idx].mpc_apicid = id; - mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx); + mp_ioapics[idx].mpc_apicver = 0; /* * Build basic IRQ lookup table to facilitate gsi->io_apic lookups @@ -711,9 +693,9 @@ void __init mp_register_ioapic(u8 id, u3 mp_ioapic_routing[idx].gsi_end = gsi_base + io_apic_get_redir_entries(idx); - printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, " + printk(KERN_INFO "IOAPIC[%d]: apic_id %d, address 0x%x, " "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid, - mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr, + mp_ioapics[idx].mpc_apicaddr, mp_ioapic_routing[idx].gsi_start, mp_ioapic_routing[idx].gsi_end); }