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x86: TLS cleanup

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This consolidates the four different places that implemented the same
encoding magic for the GDT-slot 32-bit TLS support.  The old tls32.c was
renamed and is now only slightly modified to be the shared implementation.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath
2008-01-30 13:30:46 +01:00
committed by Ingo Molnar
parent 13abd0e504
commit efd1ca52d0
9 changed files with 76 additions and 301 deletions
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3
arch/x86/kernel/process_64.c
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@@ -524,7 +524,8 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long rsp,
if (clone_flags & CLONE_SETTLS) {
#ifdef CONFIG_IA32_EMULATION
if (test_thread_flag(TIF_IA32))
err = ia32_child_tls(p, childregs);
err = do_set_thread_area(p, -1,
(struct user_desc __user *)childregs->rsi, 0);
else
#endif
err = do_arch_prctl(p, ARCH_SET_FS, childregs->r8);