On Fri, May 08, 2026 at 06:12:01PM +0100, Mark Rutland wrote: > On Fri, Mar 06, 2026 at 05:00:53PM +0000, Mark Brown wrote:
> > Update the definition of SMIDR_EL1 in the sysreg definition to reflect the > > information in DD0601 2025-06. This includes somewhat more generic ways of > > describing the sharing of SMCUs, more information on supported priorities > > and provides additional resolution for describing affinity groups. > FWIW, these are all in ARM DDI 0487 M.b: > https://developer.arm.com/documentation/ddi0487/mb/ > Is anything later in the series going to depend on these fields, or > would everything behave correctly with the existing RES0 field > definitions? We're exposing the affinity fields so there's a build time issue. > > +Field 55:52 HIP > Reading the ARM ARM, HIP is arguably a backwards-incompatible change. Yes, I belive people are aware. > Do we expect to expose that to VMs, or just hide priorities entirely? I > suspect we probably want to require that the guest sees > SMIDR_EL1.SMPS==0, and not care about any of that. Currently we're not exposing priority support to guests so we don't need to worry about it yet.
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