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2014 Oct 29
0
[Xen-devel] [RFC] Hypervisor RNG and enumeration
On 10/29/2014 03:37 AM, Andrew Cooper wrote:
>>
>> CPUID with EAX = 0x4F000001 and ECX >= N MUST return all zeros.
>>
>> To the extent that the hypervisor prefers a given interface, it should
>> specify that interface earlier in the list. For example, KVM might place
>> its "KVMKVMKVM" signature first in the list to indicate that it shoul...
2014 Oct 29
2
[Xen-devel] [RFC] Hypervisor RNG and enumeration
...een 0x4F000000 and 0x4FFFFFFF. It
> indicates the largest leaf defined in this specification that is provided.
> Any leaves described in this specification with EAX values that exceed
> max_commonhv_leaf MUST be handled by guests as though they contain
> all zeros.
>
> CPUID leaf 4F000001H: hypervisor interface enumeration
> ------------------------------------------------------
>
> If max_commonhv_leaf >= 0x4F000001, CommonHV provides a list of tuples
> (location, signature). Each tuple indicates the presence of another
> paravirtual interface identified by the s...
2014 Oct 29
2
[Xen-devel] [RFC] Hypervisor RNG and enumeration
...een 0x4F000000 and 0x4FFFFFFF. It
> indicates the largest leaf defined in this specification that is provided.
> Any leaves described in this specification with EAX values that exceed
> max_commonhv_leaf MUST be handled by guests as though they contain
> all zeros.
>
> CPUID leaf 4F000001H: hypervisor interface enumeration
> ------------------------------------------------------
>
> If max_commonhv_leaf >= 0x4F000001, CommonHV provides a list of tuples
> (location, signature). Each tuple indicates the presence of another
> paravirtual interface identified by the s...
2014 Oct 29
11
[RFC] Hypervisor RNG and enumeration
...hv_leaf MUST be a number between 0x4F000000 and 0x4FFFFFFF. It
indicates the largest leaf defined in this specification that is provided.
Any leaves described in this specification with EAX values that exceed
max_commonhv_leaf MUST be handled by guests as though they contain
all zeros.
CPUID leaf 4F000001H: hypervisor interface enumeration
------------------------------------------------------
If max_commonhv_leaf >= 0x4F000001, CommonHV provides a list of tuples
(location, signature). Each tuple indicates the presence of another
paravirtual interface identified by the signature at the indicate...
2014 Oct 29
11
[RFC] Hypervisor RNG and enumeration
...hv_leaf MUST be a number between 0x4F000000 and 0x4FFFFFFF. It
indicates the largest leaf defined in this specification that is provided.
Any leaves described in this specification with EAX values that exceed
max_commonhv_leaf MUST be handled by guests as though they contain
all zeros.
CPUID leaf 4F000001H: hypervisor interface enumeration
------------------------------------------------------
If max_commonhv_leaf >= 0x4F000001, CommonHV provides a list of tuples
(location, signature). Each tuple indicates the presence of another
paravirtual interface identified by the signature at the indicate...