[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Checking hypercall page existence!
You can only execute hypercalls from ring 0 (kernel context), not user space. Is that your problem? -- Keir On 1/11/08 08:15, "Jayaraman, Bhaskar" <Bhaskar.Jayaraman@xxxxxxx> wrote: > Hi, I've mapped hypercall pages onto a VxWorks HVM using the CPUID and WRMSR > instructions on a 32 bit pentium machine. However, when I'm trying to make a > hypercall on it the hypercall on it I'm unable to succeed and it fails. I > tried the HYPERVISOR_xen_version and HYPERVISOR_vm_assist hypercalls and they > both are returning < 0 values. > I was wondering whether there is any way in which I can verify whether the > hypercall pages have actually been mapped. I could take a dump of the pages > that wrmsr maps into my domain and look through it for hypercall opcodes but > if there is an easier way to confirm that, like a signature in the page > mapped, please let me know. > Thanks. > Bhaskar. > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |