powerpc/e500/qemu-e500: allow core to idle without waiting

This means an idle guest won't needlessly consume an entire core on the host, waiting for work to show up. Signed-off-by: Tobias Waldekranz <[email protected]> Signed-off-by: Joachim Wiberg <[email protected]> Acked-by: Scott Wood <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
niw · Jan 31, 2022 · f529edd · f529edd
1 parent b2a6f60
commit f529edd
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/arch/powerpc/platforms/85xx/qemu_e500.c b/arch/powerpc/platforms/85xx/qemu_e500.c
@@ -67,4 +67,9 @@ define_machine(qemu_e500) {
 	.get_irq		= mpic_get_coreint_irq,
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= udbg_progress,
+#ifdef CONFIG_PPC64
+	.power_save		= book3e_idle,
+#else
+	.power_save		= e500_idle,
+#endif
 };