On Fri, Apr 8, 2016 at 10:50 PM, John Baldwin <[email protected]> wrote: > On Friday, April 08, 2016 09:20:47 AM Sepherosa Ziehau wrote: >> Author: sephe >> Date: Fri Apr 8 09:20:46 2016 >> New Revision: 297699 >> URL: https://svnweb.freebsd.org/changeset/base/297699 >> >> Log: >> hyperv: Revert r297481 >> >> Use vm_guest == VM_GUEST_HV is not enough to determine whether FreeBSD >> is running on Hyper-V or not. What a mess. >> >> Reported by: smokehydration tutanota com >> Sponsored by: Microsoft OSTC > > Ewww, does this mean Hyper-V doesn't always report itself via the VM > CPUID leafs? (Or is it not setting the HV cpuid feature bit?)
Some other hypervisors reuse Hyper-V's ID. So relying on the ID==Hyper-V is not going to work. We have a patch to do more cpuids to detect the existence of the Hyper-V time counter and other bits (event timer, etc), which do not hooked to the vmbus. Thanks, sephe -- Tomorrow Will Never Die _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "[email protected]"
