Am 03.01.2011 17:06, Avi Kivity wrote: > On 01/03/2011 10:33 AM, Jan Kiszka wrote: >> From: Jan Kiszka<jan.kiszka@xxxxxxxxxxx> >> >> First of all, we only need this EPT identity and TSS reservation on >> Intel CPUs. > > kvm-amd will ignore it just fine. I'd like to keep arch differences > away from userspace. And I would prefer to avoid needlessly cluttering the physical guest address space where not needed. Long term, we could even give user space a hint (unless it can test it directly) that this workaround is no longer needed as the host Intel CPU supports true real mode. > >> Then, in order to support loading BIOSes> 256K, reorder the >> code, adjusting the base if the kernel supports moving the identity map. >> We can drop the check for KVM_CAP_SET_TSS_ADDR as we already depend on >> much newer features. > > There is no ordering on kvm features. Each can come and go as it pleases. > Well, at least this is not how kvm upstream works so far. Jan
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