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[Xen-devel] loading IDT in xen?
| To: | "List: Xen Developers" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | [Xen-devel] loading IDT in xen? |
| From: | "Jun Koi" <junkoi2004@xxxxxxxxx> |
| Date: | Thu, 31 Jan 2008 12:46:05 +0900 |
| Delivery-date: | Wed, 30 Jan 2008 19:46:46 -0800 |
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I am looking at the hypervisor code to see how Xen setup the IDT. But it seems that the code in protected mode reuses the real mode IDT? In arch/x86/boot/trampoline.S we have at several places: lidt bootsym(idt_48) And idt_48 is defined as: idt_48: .word 0,0,0 # base = limit = 0 And in nowhere we initialize idt_48, which means idt_48 reuses real mode IDT table. However, real mode IDT table has different format than protected mode IDT, so this doesnt look to work for me. Definitely I miss something here. Anybody could enlighten me how IDT setting in protected mode work? Thanks, Jun _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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