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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] [PATCH] don't expose lm bit if kernel is not 64-bit capable. |
Date: | Wed, 04 Feb 2009 10:10:02 +0200 |
User-agent: | Thunderbird 2.0.0.19 (X11/20090105) |
All I said was that if we used KVM_GET_SUPPORTED_CPUID, we had to do something about save/restore since it can mask arbitrary things.
Right, we need to transfer the cpuid bits to the migration target.btw, we need to read them out of the kernel, since the cpuid instruction accesses hidden processor state (the results of cpuid don't depend simply on input eax and ecx).
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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