Merge tag 'powerpc-6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Madhavan Srinivasan:

 - Support for dynamic preemption

 - Migrate powerpc boards GPIO driver to new setter API

 - Added new PMU for KVM host-wide measurement

 - Enhancement to htmdump driver to support more functions

 - Added character device for couple RTAS supported APIs

 - Minor fixes and cleanup

Thanks to Amit Machhiwal, Athira Rajeev, Bagas Sanjaya, Bartosz
Golaszewski, Christophe Leroy, Eddie James, Gaurav Batra, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Jiri Slaby
(SUSE), Linus Walleij, Michal Suchanek, Naveen N Rao (AMD), Nilay
Shroff, Ricardo B. Marlière, Ritesh Harjani (IBM), Sathvika Vasireddy,
Shrikanth Hegde, Stephen Rothwell, Sourabh Jain, Thorsten Blum, Vaibhav
Jain, Venkat Rao Bagalkote, and Viktor Malik.

* tag 'powerpc-6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (52 commits)
  MAINTAINERS: powerpc: Remove myself as a reviewer
  powerpc/iommu: Use str_disabled_enabled() helper
  powerpc/powermac: Use str_enabled_disabled() and str_on_off() helpers
  powerpc/mm/fault: Use str_write_read() helper function
  powerpc: Replace strcpy() with strscpy() in proc_ppc64_init()
  powerpc/pseries/iommu: Fix kmemleak in TCE table userspace view
  powerpc/kernel: Fix ppc_save_regs inclusion in build
  powerpc: Transliterate author name and remove FIXME
  powerpc/pseries/htmdump: Include header file to get is_kvm_guest() definition
  KVM: PPC: Book3S HV: Fix IRQ map warnings with XICS on pSeries KVM Guest
  powerpc/8xx: Reduce alignment constraint for kernel memory
  powerpc/boot: Fix build with gcc 15
  powerpc/pseries/htmdump: Add documentation for H_HTM debugfs interface
  powerpc/pseries/htmdump: Add htm capabilities support to htmdump module
  powerpc/pseries/htmdump: Add htm flags support to htmdump module
  powerpc/pseries/htmdump: Add htm setup support to htmdump module
  powerpc/pseries/htmdump: Add htm info support to htmdump module
  powerpc/pseries/htmdump: Add htm status support to htmdump module
  powerpc/pseries/htmdump: Add htm start support to htmdump module
  powerpc/pseries/htmdump: Add htm configure support to htmdump module
  ...

8 files changed, 21 insertions, 19 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 6ac621155ec3..9d1ab3971694 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -160,9 +160,7 @@ endif
 
 obj64-$(CONFIG_PPC_TRANSACTIONAL_MEM)	+= tm.o
 
-ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC_CORE)(CONFIG_PPC_BOOK3S),)
 obj-y				+= ppc_save_regs.o
-endif
 
 obj-$(CONFIG_EPAPR_PARAVIRT)	+= epapr_paravirt.o epapr_hcalls.o
 obj-$(CONFIG_KVM_GUEST)		+= kvm.o kvm_emul.o
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index df16c7f547ab..8ca49e40c473 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -290,10 +290,8 @@ static void __init fadump_show_config(void)
 	if (!fw_dump.fadump_supported)
 		return;
 
-	pr_debug("Fadump enabled    : %s\n",
-				(fw_dump.fadump_enabled ? "yes" : "no"));
-	pr_debug("Dump Active       : %s\n",
-				(fw_dump.dump_active ? "yes" : "no"));
+	pr_debug("Fadump enabled    : %s\n", str_yes_no(fw_dump.fadump_enabled));
+	pr_debug("Dump Active       : %s\n", str_yes_no(fw_dump.dump_active));
 	pr_debug("Dump section sizes:\n");
 	pr_debug("    CPU state data size: %lx\n", fw_dump.cpu_state_data_size);
 	pr_debug("    HPTE region size   : %lx\n", fw_dump.hpte_region_size);
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c
index 8f4acc55407b..e0c681d0b076 100644
--- a/arch/powerpc/kernel/interrupt.c
+++ b/arch/powerpc/kernel/interrupt.c
@@ -25,6 +25,10 @@
 unsigned long global_dbcr0[NR_CPUS];
 #endif
 
+#if defined(CONFIG_PREEMPT_DYNAMIC)
+DEFINE_STATIC_KEY_TRUE(sk_dynamic_irqentry_exit_cond_resched);
+#endif
+
 #ifdef CONFIG_PPC_BOOK3S_64
 DEFINE_STATIC_KEY_FALSE(interrupt_exit_not_reentrant);
 static inline bool exit_must_hard_disable(void)
@@ -396,7 +400,7 @@ notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs)
 		/* Returning to a kernel context with local irqs enabled. */
 		WARN_ON_ONCE(!(regs->msr & MSR_EE));
 again:
-		if (IS_ENABLED(CONFIG_PREEMPTION)) {
+		if (need_irq_preemption()) {
 			/* Return to preemptible kernel context */
 			if (unlikely(read_thread_flags() & _TIF_NEED_RESCHED)) {
 				if (preempt_count() == 0)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 0ebae6e4c19d..244eb4857e7f 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -16,6 +16,7 @@
 #include <linux/mm.h>
 #include <linux/spinlock.h>
 #include <linux/string.h>
+#include <linux/string_choices.h>
 #include <linux/dma-mapping.h>
 #include <linux/bitmap.h>
 #include <linux/iommu-helper.h>
@@ -769,8 +770,8 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid,
 	iommu_table_clear(tbl);
 
 	if (!welcomed) {
-		printk(KERN_INFO "IOMMU table initialized, virtual merging %s\n",
-		       novmerge ? "disabled" : "enabled");
+		pr_info("IOMMU table initialized, virtual merging %s\n",
+			str_disabled_enabled(novmerge));
 		welcomed = 1;
 	}
 
diff --git a/arch/powerpc/kernel/proc_powerpc.c b/arch/powerpc/kernel/proc_powerpc.c
index 3816a2bf2b84..d083b4517065 100644
--- a/arch/powerpc/kernel/proc_powerpc.c
+++ b/arch/powerpc/kernel/proc_powerpc.c
@@ -9,6 +9,7 @@
 #include <linux/proc_fs.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/string.h>
 
 #include <asm/machdep.h>
 #include <asm/vdso_datapage.h>
@@ -56,7 +57,7 @@ static int __init proc_ppc64_init(void)
 {
 	struct proc_dir_entry *pde;
 
-	strcpy((char *)systemcfg->eye_catcher, "SYSTEMCFG:PPC64");
+	strscpy(systemcfg->eye_catcher, "SYSTEMCFG:PPC64");
 	systemcfg->version.major = SYSTEMCFG_MAJOR;
 	systemcfg->version.minor = SYSTEMCFG_MINOR;
 	systemcfg->processor = mfspr(SPRN_PVR);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index ef91f71e07c4..855e09886503 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1000,7 +1000,7 @@ static inline void tm_reclaim_task(struct task_struct *tsk)
 
 	WARN_ON(tm_suspend_disabled);
 
-	TM_DEBUG("--- tm_reclaim on pid %d (NIP=%lx, "
+	TM_DEBUG("---- tm_reclaim on pid %d (NIP=%lx, "
 		 "ccr=%lx, msr=%lx, trap=%lx)\n",
 		 tsk->pid, thr->regs->nip,
 		 thr->regs->ccr, thr->regs->msr,
@@ -1008,7 +1008,7 @@ static inline void tm_reclaim_task(struct task_struct *tsk)
 
 	tm_reclaim_thread(thr, TM_CAUSE_RESCHED);
 
-	TM_DEBUG("--- tm_reclaim on pid %d complete\n",
+	TM_DEBUG("---- tm_reclaim on pid %d complete\n",
 		 tsk->pid);
 
 out_and_saveregs:
@@ -2367,14 +2367,14 @@ void __no_sanitize_address show_stack(struct task_struct *tsk,
 				(sp + STACK_INT_FRAME_REGS);
 
 			lr = regs->link;
-			printk("%s--- interrupt: %lx at %pS\n",
+			printk("%s---- interrupt: %lx at %pS\n",
 			       loglvl, regs->trap, (void *)regs->nip);
 
 			// Detect the case of an empty pt_regs at the very base
 			// of the stack and suppress showing it in full.
 			if (!empty_user_regs(regs, tsk)) {
 				__show_regs(regs);
-				printk("%s--- interrupt: %lx\n", loglvl, regs->trap);
+				printk("%s---- interrupt: %lx\n", loglvl, regs->trap);
 			}
 
 			firstframe = 1;
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index d7a738f1858d..e61245c4468e 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -92,12 +92,12 @@ struct rtas_function {
  * Per-function locks for sequence-based RTAS functions.
  */
 static DEFINE_MUTEX(rtas_ibm_activate_firmware_lock);
-static DEFINE_MUTEX(rtas_ibm_get_dynamic_sensor_state_lock);
-static DEFINE_MUTEX(rtas_ibm_get_indices_lock);
 static DEFINE_MUTEX(rtas_ibm_lpar_perftools_lock);
-static DEFINE_MUTEX(rtas_ibm_physical_attestation_lock);
-static DEFINE_MUTEX(rtas_ibm_set_dynamic_indicator_lock);
+DEFINE_MUTEX(rtas_ibm_physical_attestation_lock);
 DEFINE_MUTEX(rtas_ibm_get_vpd_lock);
+DEFINE_MUTEX(rtas_ibm_get_indices_lock);
+DEFINE_MUTEX(rtas_ibm_set_dynamic_indicator_lock);
+DEFINE_MUTEX(rtas_ibm_get_dynamic_sensor_state_lock);
 
 static struct rtas_function rtas_function_table[] __ro_after_init = {
 	[RTAS_FNIDX__CHECK_EXCEPTION] = {
diff --git a/arch/powerpc/kernel/trace/ftrace_entry.S b/arch/powerpc/kernel/trace/ftrace_entry.S
index 2c1b24100eca..3565c67fc638 100644
--- a/arch/powerpc/kernel/trace/ftrace_entry.S
+++ b/arch/powerpc/kernel/trace/ftrace_entry.S
@@ -212,10 +212,10 @@
 	bne-	1f
 
 	mr	r3, r15
+1:	mtlr	r3
 	.if \allregs == 0
 	REST_GPR(15, r1)
 	.endif
-1:	mtlr	r3
 #endif
 
 	/* Restore gprs */