On Wed, Jun 08, 2022 at 07:32:37PM -0000, tip-bot2 for Chang S. Bae wrote:
> @@ -134,6 +140,9 @@ static __cpuidle int intel_idle(struct cpuidle_device *dev,
> if (state->flags & CPUIDLE_FLAG_IRQ_ENABLE)
> local_irq_enable();
>
> + if (state->flags & CPUIDLE_FLAG_INIT_XSTATE)
> + fpu_idle_fpregs();
> +
> mwait_idle_with_hints(eax, ecx);
>
> return index;
This will conflict with an intel_idle patch Rafael took from me; the
resolution would be something along these lines:
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -166,6 +166,13 @@ static __cpuidle int intel_idle_irq(stru
return ret;
}
+static __cpuidle int intel_idle_xstate(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
+{
+ fpu_idle_fpregs();
+ return __intel_idle(dev, drv, index);
+}
+
/**
* intel_idle_s2idle - Ask the processor to enter the given idle state.
* @dev: cpuidle device of the target CPU.
@@ -1831,6 +1838,9 @@ static void __init intel_idle_init_cstat
if (cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_IRQ_ENABLE)
drv->states[drv->state_count].enter = intel_idle_irq;
+ if (cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_INIT_XSTATE)
+ drv->states[drv->state_count].enter = intel_idle_xstate;
+
if ((disabled_states_mask & BIT(drv->state_count)) ||
((icpu->use_acpi || force_use_acpi) &&
intel_idle_off_by_default(mwait_hint) &&
|