[GIT PULL] KVM/riscv changes for 6.17

[Radim Krčmář]

2025-07-28T18:50:10+02:00, Paolo Bonzini <pbonzini at redhat.com>:
> Il lun 28 lug 2025, 18:21 Anup Patel <apatel at ventanamicro.com> ha scritto:
>> Currently, userspace only has a way to enable/disable the entire
>> SBI FWFT extension. We definitely need to extend ONE_REG
>> interface to allow userspace save/restore SBI FWFT state. I am
>> sure this will happen pretty soon (probably next merge window).
>>
>> At the moment, I am not sure whether userspace also needs a
>> way to enable/disable individual features of SBI FWFT extension.
>> What do you think ?
>
> Yes, you do. FWFT extensions are equivalent to CPU extensions. But all
> this should have been done before including Clement's work. Without it
> userspace has no way to support FWFT.
>
> Drew, I see you have Reviewed-by on the patches; please keep an eye on
> this stuff.

Sorry, I didn't try too hard to convince others after noticing it, and
planned to fix the most significant breakage in later rcs.
(If FWFT wasn't enabled by default, sane userspace just wouldn't expose
 FWFT to the guest until a proper KVM configuration was added).