On 05/26/2010 10:25 AM, Jan Kiszka wrote:
This is for CONFIG_INTEL_TXT enabled? Good point but needs to be solved differently. tboot, the variable that is checked by the original header, is not exported to modules. I wonder how this worked out for you... Solution should be: hack tboot_enabled to kvm_tboot_enabled and unconditionally define that to 0 for older kernels. If tboot is actually enabled in hardware, KVM may not load but I'm unsure if it's OK to assume tboot == 1 for that case or if that will cause breakages if it's off instead - CC'ing the KVM patch author.
Worst case it doesn't load. I don't think it's a problem since enabling tboot will be rare for older kernels.
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