Merge tag 'loongarch-kvm-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.18

1. Add PTW feature detection on new hardware.
2. Add sign extension with kernel MMIO/IOCSR emulation.
3. Improve in-kernel IPI emulation.
4. Improve in-kernel PCH-PIC emulation.
5. Move kvm_iocsr tracepoint out of generic code.

1 files changed, 14 insertions, 6 deletions

diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c
index 0006ab3d0789..61c2277c9ce3 100644
--- a/drivers/pmdomain/core.c
+++ b/drivers/pmdomain/core.c
@@ -187,6 +187,7 @@ static const struct genpd_lock_ops genpd_raw_spin_ops = {
 #define genpd_is_opp_table_fw(genpd)	(genpd->flags & GENPD_FLAG_OPP_TABLE_FW)
 #define genpd_is_dev_name_fw(genpd)	(genpd->flags & GENPD_FLAG_DEV_NAME_FW)
 #define genpd_is_no_sync_state(genpd)	(genpd->flags & GENPD_FLAG_NO_SYNC_STATE)
+#define genpd_is_no_stay_on(genpd)	(genpd->flags & GENPD_FLAG_NO_STAY_ON)
 
 static inline bool irq_safe_dev_in_sleep_domain(struct device *dev,
 		const struct generic_pm_domain *genpd)
@@ -1357,7 +1358,6 @@ err_poweroff:
 	return ret;
 }
 
-#ifndef CONFIG_PM_GENERIC_DOMAINS_OF
 static bool pd_ignore_unused;
 static int __init pd_ignore_unused_setup(char *__unused)
 {
@@ -1382,9 +1382,6 @@ static int __init genpd_power_off_unused(void)
 	mutex_lock(&gpd_list_lock);
 
 	list_for_each_entry(genpd, &gpd_list, gpd_list_node) {
-		genpd_lock(genpd);
-		genpd->stay_on = false;
-		genpd_unlock(genpd);
 		genpd_queue_power_off_work(genpd);
 	}
 
@@ -1393,7 +1390,6 @@ static int __init genpd_power_off_unused(void)
 	return 0;
 }
 late_initcall_sync(genpd_power_off_unused);
-#endif
 
 #ifdef CONFIG_PM_SLEEP
 
@@ -2367,6 +2363,18 @@ static void genpd_lock_init(struct generic_pm_domain *genpd)
 	}
 }
 
+#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
+static void genpd_set_stay_on(struct generic_pm_domain *genpd, bool is_off)
+{
+	genpd->stay_on = !genpd_is_no_stay_on(genpd) && !is_off;
+}
+#else
+static void genpd_set_stay_on(struct generic_pm_domain *genpd, bool is_off)
+{
+	genpd->stay_on = false;
+}
+#endif
+
 /**
  * pm_genpd_init - Initialize a generic I/O PM domain object.
  * @genpd: PM domain object to initialize.
@@ -2392,7 +2400,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
 	INIT_WORK(&genpd->power_off_work, genpd_power_off_work_fn);
 	atomic_set(&genpd->sd_count, 0);
 	genpd->status = is_off ? GENPD_STATE_OFF : GENPD_STATE_ON;
-	genpd->stay_on = !is_off;
+	genpd_set_stay_on(genpd, is_off);
 	genpd->sync_state = GENPD_SYNC_STATE_OFF;
 	genpd->device_count = 0;
 	genpd->provider = NULL;