Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, cpufeature: Unbreak compile with gcc 3.x
  x86, pat: Fix memory leak in free_memtype
  x86, k8: Fix section mismatch for powernowk8_exit()
  lib/atomic64_test: fix missing include of linux/kernel.h
  x86: remove last traces of quicklist usage
  x86, setup: Phoenix BIOS fixup is needed on Dell Inspiron Mini 1012
  x86: "nosmp" command line option should force the system into UP mode
  arch/x86/pci: use kasprintf
  x86, apic: ack all pending irqs when crashed/on kexec

4 files changed, 70 insertions, 14 deletions

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index e5a4a1e0161..c02cc692985 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -51,6 +51,7 @@
 #include <asm/smp.h>
 #include <asm/mce.h>
 #include <asm/kvm_para.h>
+#include <asm/tsc.h>
 
 unsigned int num_processors;
 
@@ -1151,8 +1152,13 @@ static void __cpuinit lapic_setup_esr(void)
  */
 void __cpuinit setup_local_APIC(void)
 {
-        unsigned int value;
-        int i, j;
+        unsigned int value, queued;
+        int i, j, acked = 0;
+        unsigned long long tsc = 0, ntsc;
+        long long max_loops = cpu_khz;
+
+        if (cpu_has_tsc)
+                rdtscll(tsc);
 
         if (disable_apic) {
                 arch_disable_smp_support();
@@ -1204,13 +1210,32 @@ void __cpuinit setup_local_APIC(void)
          * the interrupt. Hence a vector might get locked. It was noticed
          * for timer irq (vector 0x31). Issue an extra EOI to clear ISR.
          */
-        for (i = APIC_ISR_NR - 1; i >= 0; i--) {
-                value = apic_read(APIC_ISR + i*0x10);
-                for (j = 31; j >= 0; j--) {
-                        if (value & (1<<j))
-                                ack_APIC_irq();
+        do {
+                queued = 0;
+                for (i = APIC_ISR_NR - 1; i >= 0; i--)
+                        queued |= apic_read(APIC_IRR + i*0x10);
+
+                for (i = APIC_ISR_NR - 1; i >= 0; i--) {
+                        value = apic_read(APIC_ISR + i*0x10);
+                        for (j = 31; j >= 0; j--) {
+                                if (value & (1<<j)) {
+                                        ack_APIC_irq();
+                                        acked++;
+                                }
+                        }
                 }
-        }
+                if (acked > 256) {
+                        printk(KERN_ERR "LAPIC pending interrupts after %d EOI\n",
+                               acked);
+                        break;
+                }
+                if (cpu_has_tsc) {
+                        rdtscll(ntsc);
+                        max_loops = (cpu_khz << 10) - (ntsc - tsc);
+                } else
+                        max_loops--;
+        } while (queued && max_loops > 0);
+        WARN_ON(max_loops <= 0);
 
         /*
          * Now that we are all set up, enable the APIC
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 6f3dc8fbbfd..7ec2123838e 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1497,8 +1497,8 @@ static struct cpufreq_driver cpufreq_amd64_driver = {
  * simply keep the boost-disable flag in sync with the current global
  * state.
  */
-static int __cpuinit cpb_notify(struct notifier_block *nb, unsigned long action,
-                                void *hcpu)
+static int cpb_notify(struct notifier_block *nb, unsigned long action,
+                      void *hcpu)
 {
         unsigned cpu = (long)hcpu;
         u32 lo, hi;
@@ -1528,7 +1528,7 @@ static int __cpuinit cpb_notify(struct notifier_block *nb, unsigned long action,
         return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata cpb_nb = {
+static struct notifier_block cpb_nb = {
         .notifier_call          = cpb_notify,
 };
 
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index e8029896309..b4ae4acbd03 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -676,6 +676,17 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
                         DMI_MATCH(DMI_BOARD_NAME, "DG45FC"),
                 },
         },
+        /*
+         * The Dell Inspiron Mini 1012 has DMI_BIOS_VENDOR = "Dell Inc.", so
+         * match on the product name.
+         */
+        {
+                .callback = dmi_low_memory_corruption,
+                .ident = "Phoenix BIOS",
+                .matches = {
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
+                },
+        },
 #endif
         {}
 };
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 763d815e27a..37462f1ddba 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1215,9 +1215,17 @@ __init void prefill_possible_map(void)
         if (!num_processors)
                 num_processors = 1;
 
-        if (setup_possible_cpus == -1)
-                possible = num_processors + disabled_cpus;
-        else
+        i = setup_max_cpus ?: 1;
+        if (setup_possible_cpus == -1) {
+                possible = num_processors;
+#ifdef CONFIG_HOTPLUG_CPU
+                if (setup_max_cpus)
+                        possible += disabled_cpus;
+#else
+                if (possible > i)
+                        possible = i;
+#endif
+        } else
                 possible = setup_possible_cpus;
 
         total_cpus = max_t(int, possible, num_processors + disabled_cpus);
@@ -1230,11 +1238,23 @@ __init void prefill_possible_map(void)
                 possible = nr_cpu_ids;
         }
 
+#ifdef CONFIG_HOTPLUG_CPU
+        if (!setup_max_cpus)
+#endif
+        if (possible > i) {
+                printk(KERN_WARNING
+                        "%d Processors exceeds max_cpus limit of %u\n",
+                        possible, setup_max_cpus);
+                possible = i;
+        }
+
         printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
                 possible, max_t(int, possible - num_processors, 0));
 
         for (i = 0; i < possible; i++)
                 set_cpu_possible(i, true);
+        for (; i < NR_CPUS; i++)
+                set_cpu_possible(i, false);
 
         nr_cpu_ids = possible;
 }