pulled over some stuff from newos:

at boot, per cpu, detect the cpu, pull down all the relevant cpuid bits and
save them into the per-cpu structure. Changed most of the code scattered here
and there that reads the cpuid to use a new api, x86_check_feature, which looks
at the saved bits.
Also changed the system_info stuff to read from these bits.
While i was at it, refreshed all the bits to be current.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20072 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/cpu.h

@@ -12,6 +12,7 @@
 #include <smp.h>
 #include <timer.h>
 #include <boot/kernel_args.h>
+#include <arch/cpu.h>
 
 
 /* CPU local data structure */
@@ -29,6 +30,9 @@ typedef struct cpu_ent {
 	bigtime_t last_user_time;
 
 	bool disabled;
+	
+	// arch-specific stuff
+	arch_cpu_info arch;
 } cpu_ent __attribute__((aligned(64)));
 
 
@@ -41,6 +45,7 @@ extern "C" {
 
 status_t cpu_preboot_init(struct kernel_args *args);
 status_t cpu_init(struct kernel_args *args);
+status_t cpu_init_percpu(kernel_args *ka, int curr_cpu);
 status_t cpu_init_post_vm(struct kernel_args *args);
 status_t cpu_init_post_modules(struct kernel_args *args);
 bigtime_t cpu_get_active_time(int32 cpu);