linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / i386 / kernel / mpparse.c

diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index a70b5fa..e6e2f43 100644 (file)
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/acpi.h>
 #include <linux/delay.h>
+#include <linux/config.h>
 #include <linux/bootmem.h>
 #include <linux/smp_lock.h>
 #include <linux/kernel_stat.h>
@@ -37,6 +38,12 @@
 int smp_found_config;
 unsigned int __initdata maxcpus = NR_CPUS;
 
+#ifdef CONFIG_HOTPLUG_CPU
+#define CPU_HOTPLUG_ENABLED    (1)
+#else
+#define CPU_HOTPLUG_ENABLED    (0)
+#endif
+
 /*
  * Various Linux-internal data structures created from the
  * MP-table.
@@ -103,6 +110,21 @@ static int __init mpf_checksum(unsigned char *mp, int len)
 static int mpc_record; 
 static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] __initdata;
 
+#ifdef CONFIG_X86_NUMAQ
+static int MP_valid_apicid(int apicid, int version)
+{
+       return hweight_long(apicid & 0xf) == 1 && (apicid >> 4) != 0xf;
+}
+#else
+static int MP_valid_apicid(int apicid, int version)
+{
+       if (version >= 0x14)
+               return apicid < 0xff;
+       else
+               return apicid < 0xf;
+}
+#endif
+
 static void __devinit MP_processor_info (struct mpc_config_processor *m)
 {
        int ver, apicid;
@@ -168,6 +190,12 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
 
        ver = m->mpc_apicver;
 
+       if (!MP_valid_apicid(apicid, ver)) {
+               printk(KERN_WARNING "Processor #%d INVALID. (Max ID: %d).\n",
+                       m->mpc_apicid, MAX_APICS);
+               return;
+       }
+
        /*
         * Validate version
         */
@@ -197,14 +225,7 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
        cpu_set(num_processors, cpu_possible_map);
        num_processors++;
 
-       /*
-        * Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y
-        * but we need to work other dependencies like SMP_SUSPEND etc
-        * before this can be done without some confusion.
-        * if (CPU_HOTPLUG_ENABLED || num_processors > 8)
-        *       - Ashok Raj <ashok.raj@intel.com>
-        */
-       if (num_processors > 8) {
+       if (CPU_HOTPLUG_ENABLED || (num_processors > 8)) {
                switch (boot_cpu_data.x86_vendor) {
                case X86_VENDOR_INTEL:
                        if (!APIC_XAPIC(ver)) {
@@ -228,13 +249,6 @@ static void __init MP_bus_info (struct mpc_config_bus *m)
 
        mpc_oem_bus_info(m, str, translation_table[mpc_record]);
 
-       if (m->mpc_busid >= MAX_MP_BUSSES) {
-               printk(KERN_WARNING "MP table busid value (%d) for bustype %s "
-                       " is too large, max. supported is %d\n",
-                       m->mpc_busid, str, MAX_MP_BUSSES - 1);
-               return;
-       }
-
        if (strncmp(str, BUSTYPE_ISA, sizeof(BUSTYPE_ISA)-1) == 0) {
                mp_bus_id_to_type[m->mpc_busid] = MP_BUS_ISA;
        } else if (strncmp(str, BUSTYPE_EISA, sizeof(BUSTYPE_EISA)-1) == 0) {
@@ -814,8 +828,6 @@ void __init find_smp_config (void)
                smp_scan_config(address, 0x400);
 }
 
-int es7000_plat;
-
 /* --------------------------------------------------------------------------
                             ACPI-based MP Configuration
    -------------------------------------------------------------------------- */
@@ -923,8 +935,7 @@ void __init mp_register_ioapic (
        mp_ioapics[idx].mpc_apicaddr = address;
 
        set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
-       if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
-               && !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
+       if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15))
                tmpid = io_apic_get_unique_id(idx, id);
        else
                tmpid = id;
@@ -1000,6 +1011,8 @@ void __init mp_override_legacy_irq (
        return;
 }
 
+int es7000_plat;
+
 void __init mp_config_acpi_legacy_irqs (void)
 {
        struct mpc_config_intsrc intsrc;
@@ -1129,17 +1142,7 @@ int mp_register_gsi (u32 gsi, int triggering, int polarity)
                 */
                int irq = gsi;
                if (gsi < MAX_GSI_NUM) {
-                       /*
-                        * Retain the VIA chipset work-around (gsi > 15), but
-                        * avoid a problem where the 8254 timer (IRQ0) is setup
-                        * via an override (so it's not on pin 0 of the ioapic),
-                        * and at the same time, the pin 0 interrupt is a PCI
-                        * type.  The gsi > 15 test could cause these two pins
-                        * to be shared as IRQ0, and they are not shareable.
-                        * So test for this condition, and if necessary, avoid
-                        * the pin collision.
-                        */
-                       if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
+                       if (gsi > 15)
                                gsi = pci_irq++;
                        /*
                         * Don't assign IRQ used by ACPI SCI