From: Glauber Costa <gcosta@redhat.com>
Date: Mon, 3 Mar 2008 17:12:48 +0000 (-0300)
Subject: x86: provide hlt_works function.
X-Git-Tag: v5.15~41321^2~466
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=3d3f487c58ef1ece714af280b29411960908149c;p=mirror_ubuntu-kernels.git

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 9054734589fe..8bec23c15527 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -144,6 +144,15 @@ DECLARE_PER_CPU(struct cpuinfo_x86, cpu_info);
 #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);