x86: move X86_FEATURE_CONSTANT_TSC into early cpu feature detection
Need this in the next patch in time_init and that happens early.
This includes a minor fix on i386 where early_intel_workarounds()
[which is now called early_init_intel] really executes early as
the comments say.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 8618178..3cae326 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -544,9 +544,6 @@
printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n",
c->x86_cache_size, ecx & 0xFF);
}
-
- if (n >= 0x80000007)
- cpuid(0x80000007, &dummy, &dummy, &dummy, &c->x86_power);
if (n >= 0x80000008) {
cpuid(0x80000008, &eax, &dummy, &dummy, &dummy);
c->x86_virt_bits = (eax >> 8) & 0xff;
@@ -624,7 +621,7 @@
#endif
}
-static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
+static void __cpuinit early_init_amd_mc(struct cpuinfo_x86 *c)
{
#ifdef CONFIG_SMP
unsigned bits, ecx;
@@ -682,6 +679,15 @@
return 0;
}
+static void __cpuinit early_init_amd(struct cpuinfo_x86 *c)
+{
+ early_init_amd_mc(c);
+
+ /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */
+ if (c->x86_power & (1<<8))
+ set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
+}
+
static void __cpuinit init_amd(struct cpuinfo_x86 *c)
{
unsigned level;
@@ -731,10 +737,6 @@
}
display_cacheinfo(c);
- /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */
- if (c->x86_power & (1<<8))
- set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
-
/* Multi core CPU? */
if (c->extended_cpuid_level >= 0x80000008)
amd_detect_cmp(c);
@@ -845,6 +847,13 @@
#endif
}
+static void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
+{
+ if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
+ (c->x86 == 0x6 && c->x86_model >= 0x0e))
+ set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
+}
+
static void __cpuinit init_intel(struct cpuinfo_x86 *c)
{
/* Cache sizes */
@@ -1056,6 +1065,20 @@
#ifdef CONFIG_NUMA
numa_add_cpu(smp_processor_id());
#endif
+
+ c->extended_cpuid_level = cpuid_eax(0x80000000);
+
+ if (c->extended_cpuid_level >= 0x80000007)
+ c->x86_power = cpuid_edx(0x80000007);
+
+ switch (c->x86_vendor) {
+ case X86_VENDOR_AMD:
+ early_init_amd(c);
+ break;
+ case X86_VENDOR_INTEL:
+ early_init_intel(c);
+ break;
+ }
}
void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)