Merge tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Restore clearing of MSR[RI] at interrupt/syscall exit on 32-bit

 - Fix unpaired stwcx on interrupt exit on 32-bit

 - Fix race condition leading to double list-add in
   mac_hid_toggle_emumouse()

 - Fix mprotect on book3s 32-bit

 - Fix SLB multihit issue during SLB preload with 64-bit hash MMU

 - Add support for crashkernel CMA reservation

 - Add die_id and die_cpumask for Power10 & later to expose chip
   hemispheres

 - A series of minor fixes and improvements to the hash SLB code

Thanks to Antonio Alvarez Feijoo, Ben Collins, Bhaskar Chowdhury,
Christophe Leroy, Daniel Thompson, Dave Vasilevsky, Donet Tom,
J. Neuschäfer, Kunwu Chan, Long Li, Naresh Kamboju, Nathan Chancellor,
Ritesh Harjani (IBM), Shirisha G, Shrikanth Hegde, Sourabh Jain, Srikar
Dronamraju, Stephen Rothwell, Thomas Zimmermann, Venkat Rao Bagalkote,
and Vishal Chourasia.

* tag 'powerpc-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (32 commits)
  macintosh/via-pmu-backlight: Include <linux/fb.h> and <linux/of.h>
  powerpc/powermac: backlight: Include <linux/of.h>
  powerpc/64s/slb: Add no_slb_preload early cmdline param
  powerpc/64s/slb: Make preload_add return type as void
  powerpc/ptdump: Dump PXX level info for kernel_page_tables
  powerpc/64s/pgtable: Enable directMap counters in meminfo for Hash
  powerpc/64s/hash: Update directMap page counters for Hash
  powerpc/64s/hash: Hash hpt_order should be only available with Hash MMU
  powerpc/64s/hash: Improve hash mmu printk messages
  powerpc/64s/hash: Fix phys_addr_t printf format in htab_initialize()
  powerpc/64s/ptdump: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format
  powerpc/64s/hash: Restrict stress_hpt_struct memblock region to within RMA limit
  powerpc/64s/slb: Fix SLB multihit issue during SLB preload
  powerpc, mm: Fix mprotect on book3s 32-bit
  powerpc/smp: Expose die_id and die_cpumask
  powerpc/83xx: Add a null pointer check to mcu_gpiochip_add
  arch:powerpc:tools This file was missing shebang line, so added it
  kexec: Include kernel-end even without crashkernel
  powerpc: p2020: Rename wdt@ nodes to watchdog@
  powerpc: 86xx: Rename wdt@ nodes to watchdog@
  ...

46 files changed, 262 insertions, 195 deletions

diff --git a/arch/powerpc/boot/addnote.c b/arch/powerpc/boot/addnote.c
index 53b3b2621457..78704927453a 100644
--- a/arch/powerpc/boot/addnote.c
+++ b/arch/powerpc/boot/addnote.c
@@ -68,8 +68,8 @@ static int e_class = ELFCLASS32;
 #define PUT_16BE(off, v)(buf[off] = ((v) >> 8) & 0xff, \
 			 buf[(off) + 1] = (v) & 0xff)
 #define PUT_32BE(off, v)(PUT_16BE((off), (v) >> 16L), PUT_16BE((off) + 2, (v)))
-#define PUT_64BE(off, v)((PUT_32BE((off), (v) >> 32L), \
-			  PUT_32BE((off) + 4, (v))))
+#define PUT_64BE(off, v)((PUT_32BE((off), (unsigned long long)(v) >> 32L), \
+			  PUT_32BE((off) + 4, (unsigned long long)(v))))
 
 #define GET_16LE(off)	((buf[off]) + (buf[(off)+1] << 8))
 #define GET_32LE(off)	(GET_16LE(off) + (GET_16LE((off)+2U) << 16U))
@@ -78,7 +78,8 @@ static int e_class = ELFCLASS32;
 #define PUT_16LE(off, v) (buf[off] = (v) & 0xff, \
 			  buf[(off) + 1] = ((v) >> 8) & 0xff)
 #define PUT_32LE(off, v) (PUT_16LE((off), (v)), PUT_16LE((off) + 2, (v) >> 16L))
-#define PUT_64LE(off, v) (PUT_32LE((off), (v)), PUT_32LE((off) + 4, (v) >> 32L))
+#define PUT_64LE(off, v) (PUT_32LE((off), (unsigned long long)(v)), \
+			  PUT_32LE((off) + 4, (unsigned long long)(v) >> 32L))
 
 #define GET_16(off)	(e_data == ELFDATA2MSB ? GET_16BE(off) : GET_16LE(off))
 #define GET_32(off)	(e_data == ELFDATA2MSB ? GET_32BE(off) : GET_32LE(off))
diff --git a/arch/powerpc/boot/dts/asp834x-redboot.dts b/arch/powerpc/boot/dts/asp834x-redboot.dts
index 52a84561c4f0..33ddb17d1876 100644
--- a/arch/powerpc/boot/dts/asp834x-redboot.dts
+++ b/arch/powerpc/boot/dts/asp834x-redboot.dts
@@ -72,7 +72,7 @@
 		reg = <0xff000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/fsl/ge_imp3a.dts b/arch/powerpc/boot/dts/fsl/ge_imp3a.dts
index da3de8e2b7d2..9e5c01cfac2f 100644
--- a/arch/powerpc/boot/dts/fsl/ge_imp3a.dts
+++ b/arch/powerpc/boot/dts/fsl/ge_imp3a.dts
@@ -94,7 +94,7 @@
 			gpio-controller;
 		};
 
-		wdt@4,800 {
+		watchdog@4,800 {
 			compatible = "ge,imp3a-fpga-wdt", "gef,fpga-wdt-1.00",
 				"gef,fpga-wdt";
 			reg = <0x4 0x800 0x8>;
@@ -103,7 +103,7 @@
 		};
 
 		/* Second watchdog available, driver currently supports one.
-		wdt@4,808 {
+		watchdog@4,808 {
 			compatible = "gef,imp3a-fpga-wdt", "gef,fpga-wdt-1.00",
 				"gef,fpga-wdt";
 			reg = <0x4 0x808 0x8>;
diff --git a/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts b/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts
index fc92bb032c51..48a81430a8a3 100644
--- a/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts
+++ b/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts
@@ -82,7 +82,7 @@
 			reg = <0x4 0x0 0x40>;
 		};
 
-		wdt@4,2000 {
+		watchdog@4,2000 {
 			compatible = "gef,ppc9a-fpga-wdt", "gef,fpga-wdt-1.00",
 				"gef,fpga-wdt";
 			reg = <0x4 0x2000 0x8>;
@@ -90,7 +90,7 @@
 			interrupt-parent = <&gef_pic>;
 		};
 		/* Second watchdog available, driver currently supports one.
-		wdt@4,2010 {
+		watchdog@4,2010 {
 			compatible = "gef,ppc9a-fpga-wdt", "gef,fpga-wdt-1.00",
 				"gef,fpga-wdt";
 			reg = <0x4 0x2010 0x8>;
diff --git a/arch/powerpc/boot/dts/fsl/gef_sbc310.dts b/arch/powerpc/boot/dts/fsl/gef_sbc310.dts
index 47ae85c34635..8eb254b1738d 100644
--- a/arch/powerpc/boot/dts/fsl/gef_sbc310.dts
+++ b/arch/powerpc/boot/dts/fsl/gef_sbc310.dts
@@ -79,7 +79,7 @@
 			reg = <0x4 0x0 0x40>;
 		};
 
-		wdt@4,2000 {
+		watchdog@4,2000 {
 			compatible = "gef,sbc310-fpga-wdt", "gef,fpga-wdt-1.00",
 				"gef,fpga-wdt";
 			reg = <0x4 0x2000 0x8>;
@@ -87,7 +87,7 @@
 			interrupt-parent = <&gef_pic>;
 		};
 /*
-		wdt@4,2010 {
+		watchdog@4,2010 {
 			compatible = "gef,sbc310-fpga-wdt", "gef,fpga-wdt-1.00",
 				"gef,fpga-wdt";
 			reg = <0x4 0x2010 0x8>;
diff --git a/arch/powerpc/boot/dts/fsl/gef_sbc610.dts b/arch/powerpc/boot/dts/fsl/gef_sbc610.dts
index 5322be44b62e..02edbb262b8f 100644
--- a/arch/powerpc/boot/dts/fsl/gef_sbc610.dts
+++ b/arch/powerpc/boot/dts/fsl/gef_sbc610.dts
@@ -82,14 +82,14 @@
 			reg = <0x4 0x0 0x40>;
 		};
 
-		wdt@4,2000 {
+		watchdog@4,2000 {
 			compatible = "gef,fpga-wdt";
 			reg = <0x4 0x2000 0x8>;
 			interrupts = <0x1a 0x4>;
 			interrupt-parent = <&gef_pic>;
 		};
 		/* Second watchdog available, driver currently supports one.
-		wdt@4,2010 {
+		watchdog@4,2010 {
 			compatible = "gef,fpga-wdt";
 			reg = <0x4 0x2010 0x8>;
 			interrupts = <0x1b 0x4>;
diff --git a/arch/powerpc/boot/dts/mpc5121.dtsi b/arch/powerpc/boot/dts/mpc5121.dtsi
index d3fc8062fbcd..a278fb7b9e71 100644
--- a/arch/powerpc/boot/dts/mpc5121.dtsi
+++ b/arch/powerpc/boot/dts/mpc5121.dtsi
@@ -112,7 +112,7 @@
 		};
 
 		/* Watchdog timer */
-		wdt@900 {
+		watchdog@900 {
 			compatible = "fsl,mpc5121-wdt";
 			reg = <0x900 0x100>;
 		};
diff --git a/arch/powerpc/boot/dts/mpc8313erdb.dts b/arch/powerpc/boot/dts/mpc8313erdb.dts
index a8315795b2c9..09508b4c8c73 100644
--- a/arch/powerpc/boot/dts/mpc8313erdb.dts
+++ b/arch/powerpc/boot/dts/mpc8313erdb.dts
@@ -99,7 +99,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc8315erdb.dts b/arch/powerpc/boot/dts/mpc8315erdb.dts
index a89cb3139ca8..a8f68d6e50b0 100644
--- a/arch/powerpc/boot/dts/mpc8315erdb.dts
+++ b/arch/powerpc/boot/dts/mpc8315erdb.dts
@@ -100,7 +100,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc832x_rdb.dts b/arch/powerpc/boot/dts/mpc832x_rdb.dts
index ecebc27a2898..ba7caaf98fd5 100644
--- a/arch/powerpc/boot/dts/mpc832x_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc832x_rdb.dts
@@ -52,7 +52,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc8349emitx.dts b/arch/powerpc/boot/dts/mpc8349emitx.dts
index d4ebbb93de0b..13f17232ba83 100644
--- a/arch/powerpc/boot/dts/mpc8349emitx.dts
+++ b/arch/powerpc/boot/dts/mpc8349emitx.dts
@@ -53,7 +53,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;                    // from bootloader
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc8349emitxgp.dts b/arch/powerpc/boot/dts/mpc8349emitxgp.dts
index bcf68a0a7b55..eae0afd5abbc 100644
--- a/arch/powerpc/boot/dts/mpc8349emitxgp.dts
+++ b/arch/powerpc/boot/dts/mpc8349emitxgp.dts
@@ -51,7 +51,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;                    // from bootloader
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc836x_rdk.dts b/arch/powerpc/boot/dts/mpc836x_rdk.dts
index a0cc1953484d..4ff38e1a2185 100644
--- a/arch/powerpc/boot/dts/mpc836x_rdk.dts
+++ b/arch/powerpc/boot/dts/mpc836x_rdk.dts
@@ -62,7 +62,7 @@
 		/* filled by u-boot */
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
 		};
diff --git a/arch/powerpc/boot/dts/mpc8377_rdb.dts b/arch/powerpc/boot/dts/mpc8377_rdb.dts
index 7df452efa957..f137ccb8cfde 100644
--- a/arch/powerpc/boot/dts/mpc8377_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8377_rdb.dts
@@ -99,7 +99,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc8377_wlan.dts b/arch/powerpc/boot/dts/mpc8377_wlan.dts
index d8e7d40aeae4..ce254dd74dd0 100644
--- a/arch/powerpc/boot/dts/mpc8377_wlan.dts
+++ b/arch/powerpc/boot/dts/mpc8377_wlan.dts
@@ -89,7 +89,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc8378_rdb.dts b/arch/powerpc/boot/dts/mpc8378_rdb.dts
index bdcfe83a561e..19e5473d4161 100644
--- a/arch/powerpc/boot/dts/mpc8378_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8378_rdb.dts
@@ -99,7 +99,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/dts/mpc8379_rdb.dts b/arch/powerpc/boot/dts/mpc8379_rdb.dts
index a5f702304a35..61519acca228 100644
--- a/arch/powerpc/boot/dts/mpc8379_rdb.dts
+++ b/arch/powerpc/boot/dts/mpc8379_rdb.dts
@@ -97,7 +97,7 @@
 		reg = <0xe0000000 0x00000200>;
 		bus-frequency = <0>;
 
-		wdt@200 {
+		watchdog@200 {
 			device_type = "watchdog";
 			compatible = "mpc83xx_wdt";
 			reg = <0x200 0x100>;
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index a75baefd1cff..1efd1206fcab 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -21,7 +21,7 @@
 #		(default ./arch/powerpc/boot)
 # -W dir	specify working directory for temporary files (default .)
 # -z		use gzip (legacy)
-# -Z zsuffix    compression to use (gz, xz or none)
+# -Z zsuffix    compression to use (gz, xz, lzma, lzo or none)
 
 # Stop execution if any command fails
 set -e
@@ -69,7 +69,7 @@ usage() {
     echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
     echo '       [-d devtree] [-s tree.dts] [-e esm_blob]' >&2
     echo '       [-c] [-C cross-prefix] [-D datadir] [-W workingdir]' >&2
-    echo '       [-Z (gz|xz|none)] [--no-compression] [vmlinux]' >&2
+    echo '       [-Z (gz|xz|lzma|lzo|none)] [--no-compression] [vmlinux]' >&2
     exit 1
 }
 
diff --git a/arch/powerpc/include/asm/book3s/32/tlbflush.h b/arch/powerpc/include/asm/book3s/32/tlbflush.h
index e43534da5207..4be2200a3c7e 100644
--- a/arch/powerpc/include/asm/book3s/32/tlbflush.h
+++ b/arch/powerpc/include/asm/book3s/32/tlbflush.h
@@ -11,6 +11,7 @@
 void hash__flush_tlb_mm(struct mm_struct *mm);
 void hash__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
 void hash__flush_range(struct mm_struct *mm, unsigned long start, unsigned long end);
+void hash__flush_gather(struct mmu_gather *tlb);
 
 #ifdef CONFIG_SMP
 void _tlbie(unsigned long address);
@@ -29,7 +30,9 @@ void _tlbia(void);
 static inline void tlb_flush(struct mmu_gather *tlb)
 {
 	/* 603 needs to flush the whole TLB here since it doesn't use a hash table. */
-	if (!mmu_has_feature(MMU_FTR_HPTE_TABLE))
+	if (mmu_has_feature(MMU_FTR_HPTE_TABLE))
+		hash__flush_gather(tlb);
+	else
 		_tlbia();
 }
 
diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h
index 346351423207..af12e2ba8eb8 100644
--- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h
@@ -524,7 +524,6 @@ void slb_save_contents(struct slb_entry *slb_ptr);
 void slb_dump_contents(struct slb_entry *slb_ptr);
 
 extern void slb_vmalloc_update(void);
-void preload_new_slb_context(unsigned long start, unsigned long sp);
 
 #ifdef CONFIG_PPC_64S_HASH_MMU
 void slb_set_size(u16 size);
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h
index 4bbf9f699aaa..bd4a6c42a5f3 100644
--- a/arch/powerpc/include/asm/kexec.h
+++ b/arch/powerpc/include/asm/kexec.h
@@ -115,9 +115,11 @@ int setup_new_fdt_ppc64(const struct kimage *image, void *fdt, struct crash_mem
 #ifdef CONFIG_CRASH_RESERVE
 int __init overlaps_crashkernel(unsigned long start, unsigned long size);
 extern void arch_reserve_crashkernel(void);
+extern void kdump_cma_reserve(void);
 #else
 static inline void arch_reserve_crashkernel(void) {}
 static inline int overlaps_crashkernel(unsigned long start, unsigned long size) { return 0; }
+static inline void kdump_cma_reserve(void) { }
 #endif
 
 #if defined(CONFIG_CRASH_DUMP)
diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index f19ca44512d1..66ed5fe1b718 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -132,15 +132,18 @@ static inline int cpu_to_coregroup_id(int cpu)
 #include <asm/cputable.h>
 
 struct cpumask *cpu_coregroup_mask(int cpu);
+const struct cpumask *cpu_die_mask(int cpu);
+int cpu_die_id(int cpu);
 
 #ifdef CONFIG_PPC64
 #include <asm/smp.h>
 
 #define topology_physical_package_id(cpu)	(cpu_to_chip_id(cpu))
-
-#define topology_sibling_cpumask(cpu)	(per_cpu(cpu_sibling_map, cpu))
-#define topology_core_cpumask(cpu)	(per_cpu(cpu_core_map, cpu))
-#define topology_core_id(cpu)		(cpu_to_core_id(cpu))
+#define topology_sibling_cpumask(cpu)		(per_cpu(cpu_sibling_map, cpu))
+#define topology_core_cpumask(cpu)		(per_cpu(cpu_core_map, cpu))
+#define topology_core_id(cpu)			(cpu_to_core_id(cpu))
+#define topology_die_id(cpu)			(cpu_die_id(cpu))
+#define topology_die_cpumask(cpu)		(cpu_die_mask(cpu))
 
 #endif
 #endif
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index f4a8c9877249..16f8ee6cb2cd 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -101,6 +101,17 @@ SYM_FUNC_END(__kuep_unlock)
 .endm
 #endif
 
+.macro	clr_ri trash
+#ifndef CONFIG_BOOKE
+#ifdef CONFIG_PPC_8xx
+	mtspr   SPRN_NRI, \trash
+#else
+	li	\trash, MSR_KERNEL & ~MSR_RI
+	mtmsr	\trash
+#endif
+#endif
+.endm
+
 	.globl	transfer_to_syscall
 transfer_to_syscall:
 	stw	r3, ORIG_GPR3(r1)
@@ -149,6 +160,7 @@ ret_from_syscall:
 	cmpwi	r3,0
 	REST_GPR(3, r1)
 syscall_exit_finish:
+	clr_ri	r4
 	mtspr	SPRN_SRR0,r7
 	mtspr	SPRN_SRR1,r8
 
@@ -168,6 +180,7 @@ syscall_exit_finish:
 	REST_GPR(0, r1)
 	REST_GPRS(3, 12, r1)
 	b	1b
+_ASM_NOKPROBE_SYMBOL(syscall_exit_finish)
 
 #ifdef CONFIG_44x
 .L44x_icache_flush:
@@ -216,7 +229,7 @@ fast_exception_return:
 	beq	3f			/* if not, we've got problems */
 #endif
 
-2:	lwz	r10,_CCR(r11)
+	lwz	r10,_CCR(r11)
 	REST_GPRS(1, 6, r11)
 	mtcr	r10
 	lwz	r10,_LINK(r11)
@@ -224,13 +237,11 @@ fast_exception_return:
 	/* Clear the exception marker on the stack to avoid confusing stacktrace */
 	li	r10, 0
 	stw	r10, 8(r11)
-	REST_GPR(10, r11)
-#if defined(CONFIG_PPC_8xx) && defined(CONFIG_PERF_EVENTS)
-	mtspr	SPRN_NRI, r0
-#endif
+	clr_ri	r10
 	mtspr	SPRN_SRR1,r9
 	mtspr	SPRN_SRR0,r12
 	REST_GPR(9, r11)
+	REST_GPR(10, r11)
 	REST_GPR(12, r11)
 	REST_GPR(11, r11)
 	rfi
@@ -259,14 +270,14 @@ interrupt_return:
 .Lfast_user_interrupt_return:
 	lwz	r11,_NIP(r1)
 	lwz	r12,_MSR(r1)
+	clr_ri	r4
 	mtspr	SPRN_SRR0,r11
 	mtspr	SPRN_SRR1,r12
 
 BEGIN_FTR_SECTION
+	lwarx   r0,0,r1
+END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
 	stwcx.	r0,0,r1		/* to clear the reservation */
-FTR_SECTION_ELSE
-	lwarx	r0,0,r1
-ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
 
 	lwz	r3,_CCR(r1)
 	lwz	r4,_LINK(r1)
@@ -302,14 +313,14 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
 	cmpwi	cr1,r3,0
 	lwz	r11,_NIP(r1)
 	lwz	r12,_MSR(r1)
+	clr_ri	r4
 	mtspr	SPRN_SRR0,r11
 	mtspr	SPRN_SRR1,r12
 
 BEGIN_FTR_SECTION
+	lwarx   r0,0,r1
+END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
 	stwcx.	r0,0,r1		/* to clear the reservation */
-FTR_SECTION_ELSE
-	lwarx	r0,0,r1
-ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
 
 	lwz	r3,_LINK(r1)
 	lwz	r4,_CTR(r1)
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c
index e0c681d0b076..aea6f7e8e9c6 100644
--- a/arch/powerpc/kernel/interrupt.c
+++ b/arch/powerpc/kernel/interrupt.c
@@ -38,7 +38,7 @@ static inline bool exit_must_hard_disable(void)
 #else
 static inline bool exit_must_hard_disable(void)
 {
-	return true;
+	return false;
 }
 #endif
 
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index eb23966ac0a9..a45fe147868b 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1897,8 +1897,6 @@ int copy_thread(struct task_struct *p, const struct kernel_clone_args *args)
 	return 0;
 }
 
-void preload_new_slb_context(unsigned long start, unsigned long sp);
-
 /*
  * Set up a thread for executing a new program
  */
@@ -1906,9 +1904,6 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
 {
 #ifdef CONFIG_PPC64
 	unsigned long load_addr = regs->gpr[2];	/* saved by ELF_PLAT_INIT */
-
-	if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) && !radix_enabled())
-		preload_new_slb_context(start, sp);
 #endif
 
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 68d47c53876c..c8c42b419742 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -35,6 +35,7 @@
 #include <linux/of_irq.h>
 #include <linux/hugetlb.h>
 #include <linux/pgtable.h>
+#include <asm/kexec.h>
 #include <asm/io.h>
 #include <asm/paca.h>
 #include <asm/processor.h>
@@ -995,11 +996,12 @@ void __init setup_arch(char **cmdline_p)
 	initmem_init();
 
 	/*
-	 * Reserve large chunks of memory for use by CMA for fadump, KVM and
+	 * Reserve large chunks of memory for use by CMA for kdump, fadump, KVM and
 	 * hugetlb. These must be called after initmem_init(), so that
 	 * pageblock_order is initialised.
 	 */
 	fadump_cma_init();
+	kdump_cma_reserve();
 	kvm_cma_reserve();
 	gigantic_hugetlb_cma_reserve();
 
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 68edb66c2964..292fee8809bc 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1085,6 +1085,29 @@ static int __init init_big_cores(void)
 	return 0;
 }
 
+/*
+ * die_mask and die_id are only available on systems which support
+ * multiple coregroups within a same package. On all other systems, die_mask
+ * would be same as package mask and die_id would be set to -1.
+ */
+const struct cpumask *cpu_die_mask(int cpu)
+{
+	if (has_coregroup_support())
+		return per_cpu(cpu_coregroup_map, cpu);
+	else
+		return cpu_node_mask(cpu);
+}
+EXPORT_SYMBOL_GPL(cpu_die_mask);
+
+int cpu_die_id(int cpu)
+{
+	if (has_coregroup_support())
+		return cpu_to_coregroup_id(cpu);
+	else
+		return -1;
+}
+EXPORT_SYMBOL_GPL(cpu_die_id);
+
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	unsigned int cpu, num_threads;
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel