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<body class='hmmessage'><div dir='ltr'>I have the same problem after upgrading from squeeze to wheezy. Only the first half of the cores (4 out of 8) are visible to KVM host. I also have AMD processor on my HP Proliant DL165 G7 (AMD Opteron(tm) Processor 6136).<div><br></div><div>The taskset workaround doesn't seem to help. The output of taskset indicates it changes the affinity list:</div><div><br></div><div><div># taskset -p -c 0-7 8755</div><div>pid 8755's current affinity list: 0-3</div><div>pid 8755's new affinity list: 0-7</div></div><div><br></div><div><span style="font-size: 12pt;">but there is no change to the pinning of the cores:</span> only cores 0-3 are used by KVM guest. Do I need to do something else to get the workaround working?</div><div><br></div><div>Installed versions:</div><div><span style="font-size: 12pt;">linux-image-3.2.0-4-amd64: 3.2.46-1+deb7u1</span></div><div><div><div>libvirt-bin: 0.9.12-11+deb7u1</div><div>qemu-kvm: 1.1.2+dfsg-6</div></div></div> </div></body>
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