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

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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>
This commit is contained in:
Andi Kleen
2006-01-11 22:42:29 +01:00
committed by Linus Torvalds
parent 1f6818b90d
commit 636aab5ce3
1 changed files with 0 additions and 7 deletions
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7
arch/x86_64/kernel/setup64.c
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@@ -223,13 +223,6 @@ void __cpuinit cpu_init (void)
asm volatile("lidt %0" :: "m" (idt_descr)); asm volatile("lidt %0" :: "m" (idt_descr));
memcpy(me->thread.tls_array, cpu_gdt_table[cpu], GDT_ENTRY_TLS_ENTRIES * 8); 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(); syscall_init();
wrmsrl(MSR_FS_BASE, 0); wrmsrl(MSR_FS_BASE, 0);