powerpc fixes for 6.2 #5

- Fix interrupt exit race with security mitigation switching.
 
  - Don't select ARCH_WANTS_NO_INSTR until warnings are fixed.
 
  - Build fix for CONFIG_NUMA=n.
 
 Thanks to: Nicholas Piggin, Randy Dunlap, Sachin Sant.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmPojjYTHG1wZUBlbGxl
 cm1hbi5pZC5hdQAKCRBR6+o8yOGlgPn4D/9opcq75nPUVTBmYnM5ar4MK4VtSp5b
 iOe12LV8W8bT0wy5A7RRoOkV+bBNHr3057S8W78Y/darkbiD+F29/Hf2pMiwxhLf
 l+Kl4GQbrFrerqIK6tgIZrtm/kooUOtSfzpYRduOTHnt8N6uXtg43glbr1/uIKZ8
 X21wJtnlCfhiysuf9zoa1VFB43QoFa6zE1zyTgo91Ofr+4tZJN5v66YYzO2fK+co
 PTLjrv45tpo/srnxGFbfY6yZmQkGu0j7Z17V9as1HZ8od9y7jCbIBS+hHz6Drc2K
 835VRc5pfeEO9RHobQoGOEgGxqvMCW0fbgvr2sMqaqc4z6ddtqJc9IDV/ed3q95C
 5BlxNqwT2KquC/PwDem1qg0KzebP2Q3r8sKLlenEsxh1CFYdG+cBOAyQ3w6bY8Gh
 rRhKTDJjmOIABVQf5ZCAMKvbdOMz2peA7tnbWU/PMVKkpE7GYtkrFsme83lfq+L6
 u7Kjvw1GJHcz1EhA58xYk2vSzJXyO6c8f4hbRXSuhQaVHLFmiLKp6l7dZ+2DJKkX
 CPRTpm7xCegYJoSUNyT8UrP1XPoln1ECEZHTo8U4L1o1wUWmoWafaXdpzbyhl36i
 mfyOp0JT2HwzdziFd6iCWDPovOGmqSdTgEH2PkCYl+gofKRGSYR7D1qs+e+B/zn3
 Bnw/bgl5bGausQ==
 =pSxf
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-6.2-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix interrupt exit race with security mitigation switching.

 - Don't select ARCH_WANTS_NO_INSTR until warnings are fixed.

 - Build fix for CONFIG_NUMA=n.

Thanks to Nicholas Piggin, Randy Dunlap, and Sachin Sant.

* tag 'powerpc-6.2-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch
  powerpc/kexec_file: fix implicit decl error
  powerpc: Don't select ARCH_WANTS_NO_INSTR

arch/powerpc/Kconfig

@@ -163,7 +163,6 @@ config PPC
 	select ARCH_WANT_IRQS_OFF_ACTIVATE_MM
 	select ARCH_WANT_LD_ORPHAN_WARN
 	select ARCH_WANTS_MODULES_DATA_IN_VMALLOC	if PPC_BOOK3S_32 || PPC_8xx
-	select ARCH_WANTS_NO_INSTR
 	select ARCH_WEAK_RELEASE_ACQUIRE
 	select BINFMT_ELF
 	select BUILDTIME_TABLE_SORT

arch/powerpc/kernel/interrupt.c

@@ -50,16 +50,18 @@ static inline bool exit_must_hard_disable(void)
  */
 static notrace __always_inline bool prep_irq_for_enabled_exit(bool restartable)
 {
+	bool must_hard_disable = (exit_must_hard_disable() || !restartable);
+
 	/* This must be done with RI=1 because tracing may touch vmaps */
 	trace_hardirqs_on();
 
-	if (exit_must_hard_disable() || !restartable)
+	if (must_hard_disable)
 		__hard_EE_RI_disable();
 
 #ifdef CONFIG_PPC64
 	/* This pattern matches prep_irq_for_idle */
 	if (unlikely(lazy_irq_pending_nocheck())) {
-		if (exit_must_hard_disable() || !restartable) {
+		if (must_hard_disable) {
 			local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
 			__hard_RI_enable();
 		}

arch/powerpc/kexec/file_load_64.c

@@ -26,6 +26,7 @@
 #include <asm/firmware.h>
 #include <asm/kexec_ranges.h>
 #include <asm/crashdump-ppc64.h>
+#include <asm/mmzone.h>
 #include <asm/prom.h>
 
 struct umem_info {