Avi Kivity wrote:
> Small, reviewable, posted patches are definitely the best way forward.
Very well, will go that direction.
>
>> - case KVM_CHECK_EXTENSION: {
>> - int ext = (long)argp;
>> -
>> - switch (ext) {
>> - case KVM_CAP_IRQCHIP:
>> - case KVM_CAP_HLT:
>> - case KVM_CAP_MMU_SHADOW_CACHE_CONTROL:
>> - r = 1;
>> - break;
>> - default:
>> - r = 0;
>> - break;
>> - }
>> - break;
>> - }
>>
>
> CHECK_EXTENSION is hopefully a generic mechanism (even if the some of
> the actual extensions are not). So there should be a switch in common
> code for the common extensions, and the default: target should call
> kvm_arch_check_extension() for further processing.
Agreed, the call itself should be generic. But the result is arch
dependent. Will fix it.
>
>> - case KVM_GET_VCPU_MMAP_SIZE:
>> - r = -EINVAL;
>> - if (arg)
>> - goto out;
>> - r = 2 * PAGE_SIZE;
>> - break;
>>
>
> I would think this is generic too? Isn't s390 interested in passing
> information to userspace via a mmap()ed region?
Yes, same as above: call is generic - result value not. Will fix this too.
> Note that mmio data is passed via that region.
Yes, I've seen that. Thanks for the heads-up.
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