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authorAl Viro <viro@zeniv.linux.org.uk>2012-09-10 16:44:54 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-09-30 22:53:31 -0400
commit7076aada1040de4ed79a5977dbabdb5e5ea5e249 (patch)
treedfcf480d21cd714a1cc42f38417c427d06526f5a /arch/x86/kernel/entry_32.S
parent44f4b56b54d2ab5d06c1726f2cde8ca15c8fac47 (diff)
downloadop-kernel-dev-7076aada1040de4ed79a5977dbabdb5e5ea5e249.zip
op-kernel-dev-7076aada1040de4ed79a5977dbabdb5e5ea5e249.tar.gz
x86: split ret_from_fork
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
-rw-r--r--arch/x86/kernel/entry_32.S15
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 623f288..ac11073 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -994,15 +994,20 @@ END(spurious_interrupt_bug)
*/
.popsection
-ENTRY(kernel_thread_helper)
- pushl $0 # fake return address for unwinder
+ENTRY(ret_from_kernel_thread)
CFI_STARTPROC
- movl %edi,%eax
- call *%esi
+ pushl_cfi %eax
+ call schedule_tail
+ GET_THREAD_INFO(%ebp)
+ popl_cfi %eax
+ pushl_cfi $0x0202 # Reset kernel eflags
+ popfl_cfi
+ movl PT_EBP(%esp),%eax
+ call *PT_EBX(%esp)
call do_exit
ud2 # padding for call trace
CFI_ENDPROC
-ENDPROC(kernel_thread_helper)
+ENDPROC(ret_from_kernel_thread)
#ifdef CONFIG_XEN
/* Xen doesn't set %esp to be precisely what the normal sysenter
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