[PATCH v3 4/4] KVM: selftests: arm64: Skip all 32 bit IDs when set_id_regs is aarch64 only

[Ben Horgan]

Hi Mark,

On 1/5/26 16:45, Mark Brown wrote:
> On Fri, Jan 02, 2026 at 02:50:07PM +0000, Ben Horgan wrote:
>> On 12/19/25 19:28, Mark Brown wrote:
> 
>>> +			if (aarch64_only && sys_reg_CRm(reg_id) < 4) {
>>> +				ksft_test_result_skip("%s value seen in guest\n",
>>> +						      get_reg_name(reg_id));
>>> +				break;
>>> +			}
>>> +
> 
>> Unnecessary? The decision for which regs are testing is made in
>> guest_code().
> 
> The guest code has a fixed list of registers it reads blindly and we
> skip the write for these so our expected value won't be something we
> explicitly set.  The actual test is done here in the host code and it
> seems both more maintainable to keep the skip adjacent to the live test
> and clearer to be more explicit about nothing actually being tested.

Thanks for the explanation, it seems like a sensible decision.

Ben