On 07/10/2012 02:48 AM, Ingo Molnar wrote:
We could read out the current GDT [the SGDT instruction] instead of looking at gdt_page. Then we'd have to decode that descriptor, the limit. Decide whether the selector points to the GDT or LDT. All the fun x86 legacies that we mostly forgot already after two decades of running the kernel in flat linear mode...
In 32-bit mode there are actually instructions that do that work for you. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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