arch/i386/kernel/microcode.c:do_microcode_update() calls
smp_call_function(do_update_one). do_update_one() does
spin_lock/unlock. So smp_call_function_interrupt() needs
irq_enter().
entry.S has unneeded GET_THREAD_INFO(%ebx) in
device_not_available() trap.
Patch against 2.5.28.
--- arch/i386/kernel/smp.c~ Fri Jul 26 07:49:03 2002
+++ arch/i386/kernel/smp.c Fri Jul 26 07:53:45 2002
@@ -646,7 +646,10 @@
/*
* At this point the info structure may be out of scope unless wait==1
*/
+ irq_enter();
(*func)(info);
+ irq_exit();
+
if (wait) {
mb();
atomic_inc(&call_data->finished);
--- arch/i386/kernel/entry.S~ Fri Jul 26 07:49:03 2002
+++ arch/i386/kernel/entry.S Fri Jul 26 07:57:48 2002
@@ -417,7 +417,6 @@
ENTRY(device_not_available)
pushl $-1 # mark this as an int
SAVE_ALL
- GET_THREAD_INFO(%ebx)
movl %cr0, %eax
testl $0x4, %eax # EM (math emulation bit)
jne device_not_available_emulate
Oleg.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/