From: Andi Kleen <ak@suse.de>
Date: Wed, 11 Jan 2006 21:42:29 +0000 (+0100)
Subject: [PATCH] x86_64: No need to remove NT during CPU setup
X-Git-Tag: v2.6.16-rc1~378
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=636aab5ce332d88a76362797a55804c7da643467;p=linux-2.6

[PATCH] x86_64: No need to remove NT during CPU setup

head.S already clears EFLAGS completely. Following an i386 patch from
Zachary Amsden.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c
index 06dc354375..7b7131d8bc 100644
--- a/arch/x86_64/kernel/setup64.c
+++ b/arch/x86_64/kernel/setup64.c
@@ -223,13 +223,6 @@ void __cpuinit cpu_init (void)
 	asm volatile("lidt %0" :: "m" (idt_descr));
 
 	memcpy(me->thread.tls_array, cpu_gdt_table[cpu], GDT_ENTRY_TLS_ENTRIES * 8);
-
-	/*
-	 * Delete NT
-	 */
-
-	asm volatile("pushfq ; popq %%rax ; btr $14,%%rax ; pushq %%rax ; popfq" ::: "eax");
-
 	syscall_init();
 
 	wrmsrl(MSR_FS_BASE, 0);