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[PATCH] x86: bogus tls from gdt

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The per-CPU initialization code is copying in bogus data into
thread->tls_array.  Note that it copies &per_cpu(cpu_gdt_table, cpu), not
&per_cpu(cpu_gdt_table, cpu)[GDT_ENTRY_TLS_MIN).  That is totally broken
and unnecessary.  Make the initialization explicitly NULL.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Zachary Amsden 2005-10-30 14:59:33 -08:00 committed by Linus Torvalds
parent 9f40a72a7e
commit 72e12b76fe
1 changed files with 0 additions and 6 deletions
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6
arch/i386/kernel/cpu/common.c
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@ -607,12 +607,6 @@ void __devinit cpu_init(void)
cpu_gdt_descr[cpu].address =
(unsigned long)&per_cpu(cpu_gdt_table, cpu);
/*
* Set up the per-thread TLS descriptor cache:
*/
memcpy(thread->tls_array, &per_cpu(cpu_gdt_table, cpu),
GDT_ENTRY_TLS_ENTRIES * 8);
load_gdt(&cpu_gdt_descr[cpu]);
load_idt(&idt_descr);