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[Xen-devel] Why using hypercall_page ?
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Why using hypercall_page ? |
| From: | Wu Bingzheng <wubingzheng@xxxxxxxxx> |
| Date: | Thu, 23 Oct 2008 09:17:57 +0800 |
| Delivery-date: | Wed, 22 Oct 2008 18:18:39 -0700 |
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Hello, I am studing Xen hypercall now. I found that hypercall is invoked via hypercall_page, which is only filled with (in no-hypervisor-kernel-mode ): mov $i, %eax int $0x82 ret Why not invoked the hypercall directly by "int $0x82" ? What's the advantage of using hypercall_page? Thanks, Wu _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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