8 files changed, 115 insertions, 52 deletions

diff --git a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
index bec50170b75a..4786fedca6eb 100644
--- a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
@@ -51,7 +51,6 @@ enum {
 
 
 static int has_N44_O17_errata[NR_CPUS];
-static int has_N60_errata[NR_CPUS];
 static unsigned int stock_freq;
 static struct cpufreq_driver p4clockmod_driver;
 static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -224,12 +223,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
         case 0x0f12:
                 has_N44_O17_errata[policy->cpu] = 1;
                 dprintk("has errata -- disabling low frequencies\n");
-                break;
-
-        case 0x0f29:
-                has_N60_errata[policy->cpu] = 1;
-                dprintk("has errata -- disabling frequencies lower than 2ghz\n");
-                break;
         }
 
         /* get max frequency */
@@ -241,8 +234,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
         for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
                 if ((i<2) && (has_N44_O17_errata[policy->cpu]))
                         p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
-                else if (has_N60_errata[policy->cpu] && ((stock_freq * i)/8) < 2000000)
-                        p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
                 else
                         p4clockmod_table[i].frequency = (stock_freq * i)/8;
         }
diff --git a/arch/i386/kernel/cpu/cyrix.c b/arch/i386/kernel/cpu/cyrix.c
index abcff92f994c..c0c3b59de32c 100644
--- a/arch/i386/kernel/cpu/cyrix.c
+++ b/arch/i386/kernel/cpu/cyrix.c
@@ -173,7 +173,7 @@ static void __cpuinit geode_configure(void)
         ccr4 = getCx86(CX86_CCR4);
         ccr4 |= 0x38;           /* FPU fast, DTE cache, Mem bypass */
         
-        setCx86(CX86_CCR4, ccr4);
+        setCx86(CX86_CCR3, ccr3);
         
         set_cx86_memwb();
         set_cx86_reorder();     
diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c
index b92c7f0a358a..8f9c624ace6f 100644
--- a/arch/i386/kernel/efi.c
+++ b/arch/i386/kernel/efi.c
@@ -473,6 +473,70 @@ static inline void __init check_range_for_systab(efi_memory_desc_t *md)
 }
 
 /*
+ * Wrap all the virtual calls in a way that forces the parameters on the stack.
+ */
+
+#define efi_call_virt(f, args...) \
+     ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args)
+
+static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
+{
+        return efi_call_virt(get_time, tm, tc);
+}
+
+static efi_status_t virt_efi_set_time (efi_time_t *tm)
+{
+        return efi_call_virt(set_time, tm);
+}
+
+static efi_status_t virt_efi_get_wakeup_time (efi_bool_t *enabled,
+                                              efi_bool_t *pending,
+                                              efi_time_t *tm)
+{
+        return efi_call_virt(get_wakeup_time, enabled, pending, tm);
+}
+
+static efi_status_t virt_efi_set_wakeup_time (efi_bool_t enabled,
+                                              efi_time_t *tm)
+{
+        return efi_call_virt(set_wakeup_time, enabled, tm);
+}
+
+static efi_status_t virt_efi_get_variable (efi_char16_t *name,
+                                           efi_guid_t *vendor, u32 *attr,
+                                           unsigned long *data_size, void *data)
+{
+        return efi_call_virt(get_variable, name, vendor, attr, data_size, data);
+}
+
+static efi_status_t virt_efi_get_next_variable (unsigned long *name_size,
+                                                efi_char16_t *name,
+                                                efi_guid_t *vendor)
+{
+        return efi_call_virt(get_next_variable, name_size, name, vendor);
+}
+
+static efi_status_t virt_efi_set_variable (efi_char16_t *name,
+                                           efi_guid_t *vendor,
+                                           unsigned long attr,
+                                           unsigned long data_size, void *data)
+{
+        return efi_call_virt(set_variable, name, vendor, attr, data_size, data);
+}
+
+static efi_status_t virt_efi_get_next_high_mono_count (u32 *count)
+{
+        return efi_call_virt(get_next_high_mono_count, count);
+}
+
+static void virt_efi_reset_system (int reset_type, efi_status_t status,
+                                   unsigned long data_size,
+                                   efi_char16_t *data)
+{
+        efi_call_virt(reset_system, reset_type, status, data_size, data);
+}
+
+/*
  * This function will switch the EFI runtime services to virtual mode.
  * Essentially, look through the EFI memmap and map every region that
  * has the runtime attribute bit set in its memory descriptor and update
@@ -525,22 +589,15 @@ void __init efi_enter_virtual_mode(void)
          * pointers in the runtime service table to the new virtual addresses.
          */
 
-        efi.get_time = (efi_get_time_t *) efi.systab->runtime->get_time;
-        efi.set_time = (efi_set_time_t *) efi.systab->runtime->set_time;
-        efi.get_wakeup_time = (efi_get_wakeup_time_t *)
-                                        efi.systab->runtime->get_wakeup_time;
-        efi.set_wakeup_time = (efi_set_wakeup_time_t *)
-                                        efi.systab->runtime->set_wakeup_time;
-        efi.get_variable = (efi_get_variable_t *)
-                                        efi.systab->runtime->get_variable;
-        efi.get_next_variable = (efi_get_next_variable_t *)
-                                        efi.systab->runtime->get_next_variable;
-        efi.set_variable = (efi_set_variable_t *)
-                                        efi.systab->runtime->set_variable;
-        efi.get_next_high_mono_count = (efi_get_next_high_mono_count_t *)
-                                        efi.systab->runtime->get_next_high_mono_count;
-        efi.reset_system = (efi_reset_system_t *)
-                                        efi.systab->runtime->reset_system;
+        efi.get_time = virt_efi_get_time;
+        efi.set_time = virt_efi_set_time;
+        efi.get_wakeup_time = virt_efi_get_wakeup_time;
+        efi.set_wakeup_time = virt_efi_set_wakeup_time;
+        efi.get_variable = virt_efi_get_variable;
+        efi.get_next_variable = virt_efi_get_next_variable;
+        efi.set_variable = virt_efi_set_variable;
+        efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
+        efi.reset_system = virt_efi_reset_system;
 }
 
 void __init
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index 06461b8b715d..5e47683fc63a 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -302,12 +302,16 @@ sysenter_past_esp:
         pushl $(__USER_CS)
         CFI_ADJUST_CFA_OFFSET 4
         /*CFI_REL_OFFSET cs, 0*/
+#ifndef CONFIG_COMPAT_VDSO
         /*
          * Push current_thread_info()->sysenter_return to the stack.
          * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
          * pushed above; +8 corresponds to copy_thread's esp0 setting.
          */
         pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
+#else
+        pushl $SYSENTER_RETURN
+#endif
         CFI_ADJUST_CFA_OFFSET 4
         CFI_REL_OFFSET eip, 0
 
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index 2424cc9c7b3d..6a3875f81a0a 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -1227,26 +1227,32 @@ static u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_DEVICE_VECTOR , 0 }
 
 static int __assign_irq_vector(int irq)
 {
-        static int current_vector = FIRST_DEVICE_VECTOR, offset = 0;
-        int vector;
+        static int current_vector = FIRST_DEVICE_VECTOR, current_offset = 0;
+        int vector, offset, i;
 
         BUG_ON((unsigned)irq >= NR_IRQ_VECTORS);
 
         if (irq_vector[irq] > 0)
                 return irq_vector[irq];
 
-        current_vector += 8;
-        if (current_vector == SYSCALL_VECTOR)
-                current_vector += 8;
-
-        if (current_vector >= FIRST_SYSTEM_VECTOR) {
-                offset++;
-                if (!(offset % 8))
-                        return -ENOSPC;
-                current_vector = FIRST_DEVICE_VECTOR + offset;
-        }
-
         vector = current_vector;
+        offset = current_offset;
+next:
+        vector += 8;
+        if (vector >= FIRST_SYSTEM_VECTOR) {
+                offset = (offset + 1) % 8;
+                vector = FIRST_DEVICE_VECTOR + offset;
+        }
+        if (vector == current_vector)
+                return -ENOSPC;
+        if (vector == SYSCALL_VECTOR)
+                goto next;
+        for (i = 0; i < NR_IRQ_VECTORS; i++)
+                if (irq_vector[i] == vector)
+                        goto next;
+
+        current_vector = vector;
+        current_offset = offset;
         irq_vector[irq] = vector;
 
         return vector;
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index a5e34d655965..1a6f8bb8881c 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -310,13 +310,7 @@ static int __init setup_nmi_watchdog(char *str)
 
         if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE))
                 return 0;
-        /*
-         * If any other x86 CPU has a local APIC, then
-         * please test the NMI stuff there and send me the
-         * missing bits. Right now Intel P6/P4 and AMD K7 only.
-         */
-        if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0))
-                return 0;  /* no lapic support */
+
         nmi_watchdog = nmi;
         return 1;
 }
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c
index 3dceab5828f1..e55fd05da0f5 100644
--- a/arch/i386/kernel/paravirt.c
+++ b/arch/i386/kernel/paravirt.c
@@ -566,4 +566,11 @@ struct paravirt_ops paravirt_ops = {
         .irq_enable_sysexit = native_irq_enable_sysexit,
         .iret = native_iret,
 };
-EXPORT_SYMBOL(paravirt_ops);
+
+/*
+ * NOTE: CONFIG_PARAVIRT is experimental and the paravirt_ops
+ * semantics are subject to change. Hence we only do this
+ * internal-only export of this, until it gets sorted out and
+ * all lowlevel CPU ops used by modules are separately exported.
+ */
+EXPORT_SYMBOL_GPL(paravirt_ops);
diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c
index 7de9117b5a3a..5da744204d10 100644
--- a/arch/i386/kernel/sysenter.c
+++ b/arch/i386/kernel/sysenter.c
@@ -79,11 +79,6 @@ int __init sysenter_setup(void)
 #ifdef CONFIG_COMPAT_VDSO
         __set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_READONLY);
         printk("Compat vDSO mapped to %08lx.\n", __fix_to_virt(FIX_VDSO));
-#else
-        /*
-         * In the non-compat case the ELF coredumping code needs the fixmap:
-         */
-        __set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_KERNEL_RO);
 #endif
 
         if (!boot_cpu_has(X86_FEATURE_SEP)) {
@@ -100,6 +95,7 @@ int __init sysenter_setup(void)
         return 0;
 }
 
+#ifndef CONFIG_COMPAT_VDSO
 static struct page *syscall_nopage(struct vm_area_struct *vma,
                                 unsigned long adr, int *type)
 {
@@ -146,6 +142,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
         vma->vm_end = addr + PAGE_SIZE;
         /* MAYWRITE to allow gdb to COW and set breakpoints */
         vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+        /*
+         * Make sure the vDSO gets into every core dump.
+         * Dumping its contents makes post-mortem fully interpretable later
+         * without matching up the same kernel and hardware config to see
+         * what PC values meant.
+         */
+        vma->vm_flags |= VM_ALWAYSDUMP;
         vma->vm_flags |= mm->def_flags;
         vma->vm_page_prot = protection_map[vma->vm_flags & 7];
         vma->vm_ops = &syscall_vm_ops;
@@ -187,3 +190,4 @@ int in_gate_area_no_task(unsigned long addr)
 {
         return 0;
 }
+#endif