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Re: [Xen-devel] Native hypercall basics using int 82
| To: | hnrkssn hnrkssn <hnrkssn@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Native hypercall basics using int 82 |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 16 Dec 2008 08:47:39 +0000 |
| Cc: | |
| Delivery-date: | Tue, 16 Dec 2008 00:47:51 -0800 |
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| Thread-topic: | [Xen-devel] Native hypercall basics using int 82 |
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On 16/12/2008 08:39, "hnrkssn hnrkssn" <hnrkssn@xxxxxxxxx> wrote: > I'm trying to detect if I'm running as a guest in XEN hypervisor using a > simple hypercall like __HYPERVISOR_xen_version with the XENVER_extraversion > option. > I cannot use any of the API functions for this so I'm trying to setup the > required registers and call int 82 myself. > This is what I do and unfortunately, it generates an exception 0xd when > executing INT 82. > > Reading the source, I think I've figured out that I should put my arguments in > a hypercall struct shown below. I might be wrong then. See tools/misc/xen-detect.c for a nice approach that even works from user space. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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