Messages in this thread Patch in this message | | | Date | Fri, 26 Jul 2002 08:45:17 +0400 | From | Oleg Nesterov <> | Subject | Re: [patch] irqlock patch 2.5.27-H4 |
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Hello.
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/
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