On Mon, Jun 6, 2016 at 8:14 AM, Paolo Bonzini <pbonz...@redhat.com> wrote: > > > On 04/06/2016 22:53, Dan Williams wrote: >> This reverts commit 8b3e34e46aca9b6d349b331cd9cf71ccbdc91b2e. >> >> Given the deprecation of the pcommit instruction, revert its usage as a >> vm exit source in kvm. >> >> Cc: Xiao Guangrong <guangrong.x...@linux.intel.com> >> Cc: Paolo Bonzini <pbonz...@redhat.com> >> Cc: Ross Zwisler <ross.zwis...@linux.intel.com> >> Signed-off-by: Dan Williams <dan.j.willi...@intel.com> > > This is not what that patch does. It passes down the pcommit > instruction to the guest if desired, and lets a nested hypervisor trap > it (also if desired). Finally, it lets the guest see the PCOMMIT bit in > CPUID if the host has it. > > If the PCOMMIT cpuid feature is going to stay despite the deprecation, > I'd prefer to keep this patch.
No, it will be marked as reserved. > Otherwise please change the commit > message to > > Given the deprecation of the pcommit instruction, the relevant VMX > features and CPUID bits are not going to be rolled into the SDM. Remove > their usage from KVM. Ok, will do.
