>>> On 31.07.15 at 17:36, <andrew.coop...@citrix.com> wrote: > On 31/07/15 16:30, Razvan Cojocaru wrote: >> On 07/31/2015 06:13 PM, Andrew Cooper wrote: >>> Are you certain that the guest is actually setting it? If the guest >>> never sets it in the first place, 0 will be the expected value. >> That might be it, I'll need to look closer. > > Any credible 64bit kernel will not rely on sysenter, as it only > available on Intel, and any kernel trying to reduce its attack surface > will likely not enable it in the first place.
Iirc Linux still prefers to use SYSENTER for its 32-bit compat mode syscall entry on Intel systems. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
