From 72e12b76fe48d99d1deb417f177b10a9d99b2e74 Mon Sep 17 00:00:00 2001 From: Zachary Amsden Date: Sun, 30 Oct 2005 14:59:33 -0800 Subject: [PATCH] [PATCH] x86: bogus tls from gdt 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 Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/kernel/cpu/common.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 9ad43be9a0..a162c0326b 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -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); -- 2.39.2