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[PATCH] uml: add arch_switch_to for newly forked thread

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Newly forked threads have no arch_switch_to_skas() called before their first
run, because when schedule() switches to them they're resumed in the body of
thread_wait() inside fork_handler() rather than in switch_threads() in
switch_to_skas().  Compensate this missing call.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso
2006-03-31 02:30:24 -08:00
committed by Linus Torvalds
parent dd77aec07a
commit 54d8d3b5a0
3 changed files with 25 additions and 4 deletions
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9
arch/um/sys-i386/ptrace.c
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@ -23,7 +23,14 @@ void arch_switch_to_tt(struct task_struct *from, struct task_struct *to)
void arch_switch_to_skas(struct task_struct *from, struct task_struct *to)
{
arch_switch_tls_skas(from, to);
int err = arch_switch_tls_skas(from, to);
if (!err)
return;
if (err != -EINVAL)
printk(KERN_WARNING "arch_switch_tls_skas failed, errno %d, not EINVAL\n", -err);
else
printk(KERN_WARNING "arch_switch_tls_skas failed, errno = EINVAL\n");
}
int is_syscall(unsigned long addr)