On Tue, Sep 12, 2023 at 10:29:33AM -0700, Oza Pawandeep wrote: > Arm® Functional Fixed Hardware Specification defines LPI states, > which provide an architectural context loss flags field that can > be used to describe the context that might be lost when an LPI > state is entered. > > - Core context Lost > - General purpose registers. > - Floating point and SIMD registers. > - System registers, include the System register based > - generic timer for the core. > - Debug register in the core power domain. > - PMU registers in the core power domain. > - Trace register in the core power domain. > - Trace context loss > - GICR > - GICD > > Qualcomm's custom CPUs preserves the architectural state, > including keeping the power domain for local timers active. > when core is power gated, the local timers are sufficient to > wake the core up without needing broadcast timer. > > The patch fixes the evaluation of cpuidle arch_flags, and moves only to > broadcast timer if core context lost is defined in ACPI LPI. > > Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxx> IIRC, Rafael had acked this, perhaps missing the tag ? Also just add a note to Will/Catalin that Rafael has acked and prefer to take it via arm64 tree. -- Regards, Sudeep
