On 11/05/2015 12:42 PM, Jan Beulich wrote: >>>> On 05.11.15 at 10:52, <rcojoc...@bitdefender.com> wrote: >> I need to get the XSAVE size from userspace. The easiest way seems to be >> to use the XEN_DOMCTL_getvcpuextstate hypercall, but that hypercall is >> not public / there's no xenctrl.h wrapper for it. > > Before going into any detail of the rest of your mail - any reason you > can't just consult CPUID output?
That's because the userspace application doesn't live in dom0, but in a dedicated privileged domain, and I'm unsure if a CPUID issued there yields the same results as a CPUID issued in dom0. So I thought the safest way is to get the information directly from the hypervisor. Is this assumption incorrect? Thanks, Razvan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
