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x86, um: switch to generic fork/vfork/clone

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-10-22 22:34:11 -04:00
parent 71613c3b87
commit 1d4b4b2994
16 changed files with 52 additions and 117 deletions
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7
arch/x86/kernel/process_64.c
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@@ -169,7 +169,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
savesegment(ds, p->thread.ds);
memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
if (unlikely(!regs)) {
if (unlikely(p->flags & PF_KTHREAD)) {
/* kernel thread */
memset(childregs, 0, sizeof(struct pt_regs));
childregs->sp = (unsigned long)childregs;
@@ -181,10 +181,11 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
childregs->flags = X86_EFLAGS_IF | X86_EFLAGS_BIT1;
return 0;
}
*childregs = *regs;
*childregs = *current_pt_regs();
childregs->ax = 0;
childregs->sp = sp;
if (sp)
childregs->sp = sp;
err = -ENOMEM;
memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));