x86: provide hlt_works function.
In x86_64, hlt always work. in i386, we'll query the cpuinfo associated
with this cpu
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 9054734..8bec23c 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -144,6 +144,15 @@
#define current_cpu_data boot_cpu_data
#endif
+static inline int hlt_works(int cpu)
+{
+#ifdef CONFIG_X86_32
+ return cpu_data(cpu).hlt_works_ok;
+#else
+ return 1;
+#endif
+}
+
#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
extern void cpu_detect(struct cpuinfo_x86 *c);