Re: [PATCH v8 05/12] x86emul: support X{SUS,RES}LDTRK

[Jan Beulich <jbeulich@xxxxxxxx>]

On 07.05.2020 22:13, Andrew Cooper wrote:
> On 05/05/2020 09:14, Jan Beulich wrote:
>> --- a/xen/tools/gen-cpuid.py
>> +++ b/xen/tools/gen-cpuid.py
>> @@ -284,6 +284,9 @@ def crunch_numbers(state):
>>          # as dependent features simplifies Xen's logic, and prevents the 
>> guest
>>          # from seeing implausible configurations.
>>          IBRSB: [STIBP, SSBD],
>> +
>> +        # In principle the TSXLDTRK insns could also be considered 
>> independent.
>> +        RTM: [TSXLDTRK],
> 
> Why the link?  There is no relevant interaction AFAICT.

Do the insns make any sense without TSX? Anyway - hence the
comment, and if you're convinced the connection does not
need making, I'd be okay dropping it. I would assume though
that we'd better hide TSXLDTRK whenever we hide RTM, which
is most easily achieved by having a connection here.

Jan