Re: [PATCH] KVM: MIPS: Change the definition of kvm type

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On 19/09/20 11:18, Thomas Huth wrote:
>>>
>>> So I define like this:
>>>
>>>  #define KVM_VM_MIPS_AUTO        0
>>>  #define KVM_VM_MIPS_VZ          1
>>>  #define KVM_VM_MIPS_TE          2
>>>
>>> Since VZ and TE cannot co-exists, using type 0 on a TE platform will
>>> still return success (so old user-space tools have no problems on new
>>> kernels); the advantage is that using type 0 on a VZ platform will not
>>> return failure. So, the only problem is "new user-space tools use type
>>> 2 on old kernels", but if we treat this as a kernel bug, we can backport
>>> this patch to old stable kernels.
>> I'm a bit wary to do that.  However it's not an issue for QEMU since it
>> generally updates the kernel headers.
> Are there any other userspace programs beside QEMU that use KVM on MIPS?
> If there aren't any other serious userspace programs, I think we should
> go ahead with this patch here. Otherwise, what are the other programs
> that could be affected?

kvmtool (aka lkvm) I guess.  I don't know if it is affected but I
wouldn't be worried.

Paolo




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