RE: [PATCH v13 3/3] trace,x86: Add irq vector tracepoints

[Seiji Aguchi]

> > The point is that the IDT address itself should not be mutable state if
> > it can be at all avoided.
> 
> Hmm, maybe we can do it. Have two counters, a debug_idt_ctr and a
> trace_idt_ctr, then have a function that basically does this:
> 
> 	if (this_cpu_read(debug_idt_ctr))
> 		load_idt(&nmi_idt_descr); /* probably should rename to debug_idt_descr) */
> 	else if (trace_idt_ctr)
> 		load_idt(&trace_idt_descr);
> 	else
> 		load_idt(&idt_descr);
> 
> Then all modifications of the idt would call this function.

I think it will work.
I will make the patch.

Seiji

> 
> -- Steve
> 
> 

N‹§²æìr¸›yúèšØb²X¬¶ÇvØ^–)Þ{.nÇ+‰·¥Š{±‘êçzX§¶›¡Ü}©ž²ÆzÚ&j:+v‰¨¾«‘êçzZ+€Ê+zf£¢·hšˆ§~†­†Ûiÿûàz¹®w¥¢¸?™¨è­Ú&¢)ßf”ù^jÇy§m…á@A«a¶Úÿ0¶ìh®å’i