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Seems wrong that qemux86 has this enabled and qemux86-64 doesn't. Also this will allow people to use kvm with -cpu=host. Right now, runqemu qemux86-64 kvm uses -cpu=kvm64 because without this feature you can't use cpu=host on newer host kernels (>= 3.8). This basically reverts poky e6149ec6c4c14d3a939022cdc29ac94dced836dd / oe-core 64749308fadabb4aa7c39f360c6395827bc5eb3a The reason of that commit (which is more than a year old) was that on the AB running old kernels (2.6.37) we would see occasional shutdown failures. (but if memory serves me right the fix might have been just a coincidence). I've tested this change with by: - run tests on runqemu qemux86-64 (without kvm) (300 seconds) - run tests on runqemu qemux86-64 kvm (which uses by default cpu=kvm64) - (tests took 20 seconds) - run tests on runqemu qemux86-64 kvm with cpu=host - (tests took 18 seconds) [ YOCTO #5956 ] (From OE-Core rev: 4b09a1869895e4cd18e82b7d190fbfea3c7922af) Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>