[PATCH v13 25/35] KVM: selftests: Convert lib's mem regions to KVM_SET_USER_MEMORY_REGION2

[Shuah Khan]

On 4/25/24 08:12, Dan Carpenter wrote:
> On Fri, Oct 27, 2023 at 11:22:07AM -0700, Sean Christopherson wrote:
>> Use KVM_SET_USER_MEMORY_REGION2 throughout KVM's selftests library so that
>> support for guest private memory can be added without needing an entirely
>> separate set of helpers.
>>
>> Note, this obviously makes selftests backwards-incompatible with older KVM
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> versions from this point forward.
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> Is there a way we could disable the tests on older kernels instead of
> making them fail?  Check uname or something?  There is probably a
> standard way to do this...  It's these tests which fail.

They shouldn't fail - the tests should be skipped on older kernels.
If it is absolutely necessary to dd uname to check kernel version,
refer to zram/zram_lib.sh for an example.

thanks,
-- Shuah