Merge master.kernel.org:/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

[pandora-kernel.git] / arch / i386 / kernel / cpu / common.c

diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 4e63d8c..1b34c56 100644 (file)
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -236,29 +236,14 @@ static int __cpuinit have_cpuid_p(void)
        return flag_is_changeable_p(X86_EFLAGS_ID);
 }
 
-/* Do minimum CPU detection early.
-   Fields really needed: vendor, cpuid_level, family, model, mask, cache alignment.
-   The others are not touched to avoid unwanted side effects.
-
-   WARNING: this function is only called on the BP.  Don't add code here
-   that is supposed to run on all CPUs. */
-static void __init early_cpu_detect(void)
+void __init cpu_detect(struct cpuinfo_x86 *c)
 {
-       struct cpuinfo_x86 *c = &boot_cpu_data;
-
-       c->x86_cache_alignment = 32;
-
-       if (!have_cpuid_p())
-               return;
-
        /* Get vendor name */
        cpuid(0x00000000, &c->cpuid_level,
              (int *)&c->x86_vendor_id[0],
              (int *)&c->x86_vendor_id[8],
              (int *)&c->x86_vendor_id[4]);
 
-       get_cpu_vendor(c, 1);
-
        c->x86 = 4;
        if (c->cpuid_level >= 0x00000001) {
                u32 junk, tfms, cap0, misc;
@@ -275,6 +260,26 @@ static void __init early_cpu_detect(void)
        }
 }
 
+/* Do minimum CPU detection early.
+   Fields really needed: vendor, cpuid_level, family, model, mask, cache alignment.
+   The others are not touched to avoid unwanted side effects.
+
+   WARNING: this function is only called on the BP.  Don't add code here
+   that is supposed to run on all CPUs. */
+static void __init early_cpu_detect(void)
+{
+       struct cpuinfo_x86 *c = &boot_cpu_data;
+
+       c->x86_cache_alignment = 32;
+
+       if (!have_cpuid_p())
+               return;
+
+       cpu_detect(c);
+
+       get_cpu_vendor(c, 1);
+}
+
 static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
 {
        u32 tfms, xlvl;
@@ -309,6 +314,8 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
 #else
                        c->apicid = (ebx >> 24) & 0xFF;
 #endif
+                       if (c->x86_capability[0] & (1<<19))
+                               c->x86_clflush_size = ((ebx >> 8) & 0xff) * 8;
                } else {
                        /* Have CPUID level 0 only - unheard of */
                        c->x86 = 4;
@@ -373,6 +380,7 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
        c->x86_vendor_id[0] = '\0'; /* Unset */
        c->x86_model_id[0] = '\0';  /* Unset */
        c->x86_max_cores = 1;
+       c->x86_clflush_size = 32;
        memset(&c->x86_capability, 0, sizeof c->x86_capability);
 
        if (!have_cpuid_p()) {
@@ -601,7 +609,7 @@ struct pt_regs * __devinit idle_regs(struct pt_regs *regs)
        return regs;
 }
 
-__cpuinit int alloc_gdt(int cpu)
+static __cpuinit int alloc_gdt(int cpu)
 {
        struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu);
        struct desc_struct *gdt;
@@ -650,6 +658,8 @@ __cpuinit int alloc_gdt(int cpu)
 /* Initial PDA used by boot CPU */
 struct i386_pda boot_pda = {
        ._pda = &boot_pda,
+       .cpu_number = 0,
+       .pcurrent = &init_task,
 };
 
 static inline void set_kernel_gs(void)
@@ -694,6 +704,8 @@ __cpuinit int init_gdt(int cpu, struct task_struct *idle)
 
        memset(pda, 0, sizeof(*pda));
        pda->_pda = pda;
+       pda->cpu_number = cpu;
+       pda->pcurrent = idle;
 
        return 1;
 }