From 87c00572ba05aa8c9db118da75c608f47eb10b9e Mon Sep 17 00:00:00 2001 From: "Gabriel L. Somlo" Date: Wed, 7 May 2014 16:52:13 -0400 Subject: [PATCH] kvm: x86: emulate monitor and mwait instructions as nop Treat monitor and mwait instructions as nop, which is architecturally correct (but inefficient) behavior. We do this to prevent misbehaving guests (e.g. OS X <= 10.7) from crashing after they fail to check for monitor/mwait availability via cpuid. Since mwait-based idle loops relying on these nop-emulated instructions would keep the host CPU pegged at 100%, do NOT advertise their presence via cpuid, to prevent compliant guests from using them inadvertently. Signed-off-by: Gabriel L. Somlo Signed-off-by: Paolo Bonzini --- Reading git-format-patch failed