Merge tag 'powerpc-5.18-1' of git://git.kernel.org/pub/scm/linux/kern…

…el/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Livepatch support for 32-bit is probably the standout new feature,
  otherwise mostly just lots of bits and pieces all over the board.

  There's a series of commits cleaning up function descriptor handling,
  which touches a few other arches as well as LKDTM. It has acks from
  Arnd, Kees and Helge.

  Summary:

   - Enforce kernel RO, and implement STRICT_MODULE_RWX for 603.

   - Add support for livepatch to 32-bit.

   - Implement CONFIG_DYNAMIC_FTRACE_WITH_ARGS.

   - Merge vdso64 and vdso32 into a single directory.

   - Fix build errors with newer binutils.

   - Add support for UADDR64 relocations, which are emitted by some
     toolchains. This allows powerpc to build with the latest lld.

   - Fix (another) potential userspace r13 corruption in transactional
     memory handling.

   - Cleanups of function descriptor handling & related fixes to LKDTM.

  Thanks to Abdul Haleem, Alexey Kardashevskiy, Anders Roxell, Aneesh
  Kumar K.V, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Bhaskar
  Chowdhury, Cédric Le Goater, Chen Jingwen, Christophe JAILLET,
  Christophe Leroy, Corentin Labbe, Daniel Axtens, Daniel Henrique
  Barboza, David Dai, Fabiano Rosas, Ganesh Goudar, Guo Zhengkui, Hangyu
  Hua, Haren Myneni, Hari Bathini, Igor Zhbanov, Jakob Koschel, Jason
  Wang, Jeremy Kerr, Joachim Wiberg, Jordan Niethe, Julia Lawall, Kajol
  Jain, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Mamatha Inamdar,
  Maxime Bizon, Maxim Kiselev, Maxim Kochetkov, Michal Suchanek,
  Nageswara R Sastry, Nathan Lynch, Naveen N. Rao, Nicholas Piggin,
  Nour-eddine Taleb, Paul Menzel, Ping Fang, Pratik R. Sampat, Randy
  Dunlap, Ritesh Harjani, Rohan McLure, Russell Currey, Sachin Sant,
  Segher Boessenkool, Shivaprasad G Bhat, Sourabh Jain, Thierry Reding,
  Tobias Waldekranz, Tyrel Datwyler, Vaibhav Jain, Vladimir Oltean,
  Wedson Almeida Filho, and YueHaibing"

* tag 'powerpc-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (179 commits)
  powerpc/pseries: Fix use after free in remove_phb_dynamic()
  powerpc/time: improve decrementer clockevent processing
  powerpc/time: Fix KVM host re-arming a timer beyond decrementer range
  powerpc/tm: Fix more userspace r13 corruption
  powerpc/xive: fix return value of __setup handler
  powerpc/64: Add UADDR64 relocation support
  powerpc: 8xx: fix a return value error in mpc8xx_pic_init
  powerpc/ps3: remove unneeded semicolons
  powerpc/64: Force inlining of prevent_user_access() and set_kuap()
  powerpc/bitops: Force inlining of fls()
  powerpc: declare unmodified attribute_group usages const
  powerpc/spufs: Fix build warning when CONFIG_PROC_FS=n
  powerpc/secvar: fix refcount leak in format_show()
  powerpc/64e: Tie PPC_BOOK3E_64 to PPC_FSL_BOOK3E
  powerpc: Move C prototypes out of asm-prototypes.h
  powerpc/kexec: Declare kexec_paca static
  powerpc/smp: Declare current_set static
  powerpc: Cleanup asm-prototypes.c
  powerpc/ftrace: Use STK_GOT in ftrace_mprofile.S
  powerpc/ftrace: Regroup PPC64 specific operations in ftrace_mprofile.S
  ...

Documentation/ABI/testing/sysfs-bus-papr-pmem

@@ -61,3 +61,15 @@ Description:
 		* "CchRHCnt" : Cache Read Hit Count
 		* "CchWHCnt" : Cache Write Hit Count
 		* "FastWCnt" : Fast Write Count
+
+What:		/sys/bus/nd/devices/nmemX/papr/health_bitmap_inject
+Date:		Jan, 2022
+KernelVersion:	v5.17
+Contact:	linuxppc-dev <[email protected]>, [email protected],
+Description:
+		(RO) Reports the health bitmap inject bitmap that is applied to
+		bitmap received from PowerVM via the H_SCM_HEALTH. This is used
+		to forcibly set specific bits returned from Hcall. These is then
+		used to simulate various health or shutdown states for an nvdimm
+		and are set by user-space tools like ndctl by issuing a PAPR DSM.
+

Documentation/ABI/testing/sysfs-firmware-papr-energy-scale-info

@@ -0,0 +1,29 @@
+What:		/sys/firmware/papr/energy_scale_info
+Date:		February 2022
+Contact:	Linux for PowerPC mailing list <[email protected]>
+Description:	Directory hosting a set of platform attributes like
+		energy/frequency on Linux running as a PAPR guest.
+
+		Each file in a directory contains a platform
+		attribute hierarchy pertaining to performance/
+		energy-savings mode and processor frequency.
+
+What:		/sys/firmware/papr/energy_scale_info/<id>
+Date:		February 2022
+Contact:	Linux for PowerPC mailing list <[email protected]>
+Description:	Energy, frequency attributes directory for POWERVM servers
+
+What:		/sys/firmware/papr/energy_scale_info/<id>/desc
+Date:		February 2022
+Contact:	Linux for PowerPC mailing list <[email protected]>
+Description:	String description of the energy attribute of <id>
+
+What:		/sys/firmware/papr/energy_scale_info/<id>/value
+Date:		February 2022
+Contact:	Linux for PowerPC mailing list <[email protected]>
+Description:	Numeric value of the energy attribute of <id>
+
+What:		/sys/firmware/papr/energy_scale_info/<id>/value_desc
+Date:		February 2022
+Contact:	Linux for PowerPC mailing list <[email protected]>
+Description:	String value of the energy attribute of <id>

arch/Kconfig

@@ -202,6 +202,9 @@ config HAVE_FUNCTION_ERROR_INJECTION
 config HAVE_NMI
 	bool
 
+config HAVE_FUNCTION_DESCRIPTORS
+	bool
+
 config TRACE_IRQFLAGS_SUPPORT
 	bool
 

arch/ia64/Kconfig

@@ -36,6 +36,7 @@ config IA64
 	select HAVE_SETUP_PER_CPU_AREA
 	select TTY
 	select HAVE_ARCH_TRACEHOOK
+	select HAVE_FUNCTION_DESCRIPTORS
 	select HAVE_VIRT_CPU_ACCOUNTING
 	select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
 	select VIRT_TO_BUS

arch/ia64/include/asm/elf.h

@@ -226,7 +226,7 @@ struct got_entry {
  * Layout of the Function Descriptor
  */
 struct fdesc {
-	uint64_t ip;
+	uint64_t addr;
 	uint64_t gp;
 };
 

arch/ia64/include/asm/sections.h

@@ -9,6 +9,9 @@
 
 #include <linux/elf.h>
 #include <linux/uaccess.h>
+
+typedef struct fdesc func_desc_t;
+
 #include <asm-generic/sections.h>
 
 extern char __phys_per_cpu_start[];
@@ -27,25 +30,4 @@ extern char __start_gate_brl_fsys_bubble_down_patchlist[], __end_gate_brl_fsys_b
 extern char __start_unwind[], __end_unwind[];
 extern char __start_ivt_text[], __end_ivt_text[];
 
-#define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1
-
-#undef dereference_function_descriptor
-static inline void *dereference_function_descriptor(void *ptr)
-{
-	struct fdesc *desc = ptr;
-	void *p;
-
-	if (!get_kernel_nofault(p, (void *)&desc->ip))
-		ptr = p;
-	return ptr;
-}
-
-#undef dereference_kernel_function_descriptor
-static inline void *dereference_kernel_function_descriptor(void *ptr)
-{
-	if (ptr < (void *)__start_opd || ptr >= (void *)__end_opd)
-		return ptr;
-	return dereference_function_descriptor(ptr);
-}
-
 #endif /* _ASM_IA64_SECTIONS_H */

arch/ia64/kernel/module.c

@@ -602,15 +602,15 @@ get_fdesc (struct module *mod, uint64_t value, int *okp)
 		return value;
 
 	/* Look for existing function descriptor. */
-	while (fdesc->ip) {
-		if (fdesc->ip == value)
+	while (fdesc->addr) {
+		if (fdesc->addr == value)
 			return (uint64_t)fdesc;
 		if ((uint64_t) ++fdesc >= mod->arch.opd->sh_addr + mod->arch.opd->sh_size)
 			BUG();
 	}
 
 	/* Create new one */
-	fdesc->ip = value;
+	fdesc->addr = value;
 	fdesc->gp = mod->arch.gp;
 	return (uint64_t) fdesc;
 }

arch/parisc/Kconfig

@@ -72,6 +72,7 @@ config PARISC
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS
 	select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
 	select TRACE_IRQFLAGS_SUPPORT
+	select HAVE_FUNCTION_DESCRIPTORS if 64BIT
 
 	help
 	  The PA-RISC microprocessor is designed by Hewlett-Packard and used

arch/parisc/include/asm/sections.h

@@ -2,20 +2,14 @@
 #ifndef _PARISC_SECTIONS_H
 #define _PARISC_SECTIONS_H
 
+#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS
+#include <asm/elf.h>
+typedef Elf64_Fdesc func_desc_t;
+#endif
+
 /* nothing to see, move along */
 #include <asm-generic/sections.h>
 
 extern char __alt_instructions[], __alt_instructions_end[];
 
-#ifdef CONFIG_64BIT
-
-#define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1
-
-#undef dereference_function_descriptor
-void *dereference_function_descriptor(void *);
-
-#undef dereference_kernel_function_descriptor
-void *dereference_kernel_function_descriptor(void *);
-#endif
-
 #endif

arch/parisc/kernel/process.c

@@ -263,27 +263,6 @@ __get_wchan(struct task_struct *p)
 	return 0;
 }
 
-#ifdef CONFIG_64BIT
-void *dereference_function_descriptor(void *ptr)
-{
-	Elf64_Fdesc *desc = ptr;
-	void *p;
-
-	if (!get_kernel_nofault(p, (void *)&desc->addr))
-		ptr = p;
-	return ptr;
-}
-
-void *dereference_kernel_function_descriptor(void *ptr)
-{
-	if (ptr < (void *)__start_opd ||
-			ptr >= (void *)__end_opd)
-		return ptr;
-
-	return dereference_function_descriptor(ptr);
-}
-#endif
-
 static inline unsigned long brk_rnd(void)
 {
 	return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;

arch/powerpc/Kconfig

@@ -9,6 +9,10 @@ config 64BIT
 	bool
 	default y if PPC64
 
+config LIVEPATCH_64
+	def_bool PPC64
+	depends	on LIVEPATCH
+
 config MMU
 	bool
 	default y
@@ -132,7 +136,7 @@ config PPC
 	select ARCH_HAS_SET_MEMORY
 	select ARCH_HAS_STRICT_KERNEL_RWX	if (PPC_BOOK3S || PPC_8xx || 40x) && !HIBERNATION
 	select ARCH_HAS_STRICT_KERNEL_RWX	if FSL_BOOKE && !HIBERNATION && !RANDOMIZE_BASE
-	select ARCH_HAS_STRICT_MODULE_RWX	if ARCH_HAS_STRICT_KERNEL_RWX && !PPC_BOOK3S_32
+	select ARCH_HAS_STRICT_MODULE_RWX	if ARCH_HAS_STRICT_KERNEL_RWX
 	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UACCESS_FLUSHCACHE
 	select ARCH_HAS_UBSAN_SANITIZE_ALL
@@ -198,11 +202,13 @@ config PPC
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DEBUG_STACKOVERFLOW
 	select HAVE_DYNAMIC_FTRACE
+	select HAVE_DYNAMIC_FTRACE_WITH_ARGS	if MPROFILE_KERNEL || PPC32
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS	if MPROFILE_KERNEL || PPC32
 	select HAVE_EBPF_JIT
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS	if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
 	select HAVE_FAST_GUP
 	select HAVE_FTRACE_MCOUNT_RECORD
+	select HAVE_FUNCTION_DESCRIPTORS	if PPC64 && !CPU_LITTLE_ENDIAN
 	select HAVE_FUNCTION_ERROR_INJECTION
 	select HAVE_FUNCTION_GRAPH_TRACER
 	select HAVE_FUNCTION_TRACER
@@ -222,7 +228,7 @@ config PPC
 	select HAVE_KPROBES_ON_FTRACE
 	select HAVE_KRETPROBES
 	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
-	select HAVE_LIVEPATCH			if HAVE_DYNAMIC_FTRACE_WITH_REGS && PPC64
+	select HAVE_LIVEPATCH			if HAVE_DYNAMIC_FTRACE_WITH_REGS
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI				if PERF_EVENTS || (PPC64 && PPC_BOOK3S)
 	select HAVE_OPTPROBES

arch/powerpc/Makefile

@@ -171,7 +171,7 @@ else
 CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5))
 CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4)
 endif
-else
+else ifdef CONFIG_PPC_BOOK3E_64
 CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
 endif
 
@@ -213,7 +213,7 @@ CHECKFLAGS	+= -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
 ifdef CONFIG_CPU_BIG_ENDIAN
 CHECKFLAGS	+= -D__BIG_ENDIAN__
 else
-CHECKFLAGS	+= -D__LITTLE_ENDIAN__
+CHECKFLAGS	+= -D__LITTLE_ENDIAN__ -D_CALL_ELF=2
 endif
 
 ifdef CONFIG_476FPE_ERR46
@@ -421,9 +421,9 @@ ifeq ($(KBUILD_EXTMOD),)
 prepare: vdso_prepare
 vdso_prepare: prepare0
 	$(if $(CONFIG_VDSO32),$(Q)$(MAKE) \
-		$(build)=arch/powerpc/kernel/vdso32 include/generated/vdso32-offsets.h)
+		$(build)=arch/powerpc/kernel/vdso include/generated/vdso32-offsets.h)
 	$(if $(CONFIG_PPC64),$(Q)$(MAKE) \
-		$(build)=arch/powerpc/kernel/vdso64 include/generated/vdso64-offsets.h)
+		$(build)=arch/powerpc/kernel/vdso include/generated/vdso64-offsets.h)
 endif
 
 archprepare: checkbin

arch/powerpc/boot/.gitignore

@@ -16,6 +16,7 @@ kernel-vmlinux.strip.c
 kernel-vmlinux.strip.gz
 mktree
 otheros.bld
+otheros-too-big.bld
 uImage
 cuImage.*
 dtbImage.*

arch/powerpc/boot/dts/fsl/t1040rdb-rev-a.dts

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * T1040RDB-REV-A Device Tree Source
+ *
+ * Copyright 2014 - 2015 Freescale Semiconductor Inc.
+ *
+ */
+
+#include "t1040rdb.dts"
+
+/ {
+	model = "fsl,T1040RDB-REV-A";
+	compatible = "fsl,T1040RDB-REV-A";
+};
+
+&seville_port0 {
+	label = "ETH5";
+};
+
+&seville_port2 {
+	label = "ETH7";
+};
+
+&seville_port4 {
+	label = "ETH9";
+};
+
+&seville_port6 {
+	label = "ETH11";
+};

arch/powerpc/boot/dts/fsl/t1040rdb.dts

@@ -119,7 +119,7 @@
 	managed = "in-band-status";
 	phy-handle = <&phy_qsgmii_0>;
 	phy-mode = "qsgmii";
-	label = "ETH5";
+	label = "ETH3";
 	status = "okay";
 };
 
@@ -135,7 +135,7 @@
 	managed = "in-band-status";
 	phy-handle = <&phy_qsgmii_2>;
 	phy-mode = "qsgmii";
-	label = "ETH7";
+	label = "ETH5";
 	status = "okay";
 };
 
@@ -151,7 +151,7 @@
 	managed = "in-band-status";
 	phy-handle = <&phy_qsgmii_4>;
 	phy-mode = "qsgmii";
-	label = "ETH9";
+	label = "ETH7";
 	status = "okay";
 };
 
@@ -167,7 +167,7 @@
 	managed = "in-band-status";
 	phy-handle = <&phy_qsgmii_6>;
 	phy-mode = "qsgmii";
-	label = "ETH11";
+	label = "ETH9";
 	status = "okay";
 };
 

arch/powerpc/boot/dts/fsl/t104xrdb.dtsi

@@ -139,12 +139,12 @@
 		fman@400000 {
 			ethernet@e6000 {
 				phy-handle = <&phy_rgmii_0>;
-				phy-connection-type = "rgmii";
+				phy-connection-type = "rgmii-id";
 			};
 
 			ethernet@e8000 {
 				phy-handle = <&phy_rgmii_1>;
-				phy-connection-type = "rgmii";
+				phy-connection-type = "rgmii-id";
 			};
 
 			mdio0: mdio@fc000 {

arch/powerpc/boot/dts/xpedite5200.dts

@@ -132,7 +132,7 @@
 				reg = <0x68>;
 			};
 
-			dtt@48 {
+			dtt@34 {
 				compatible = "maxim,max1237";
 				reg = <0x34>;
 			};

arch/powerpc/boot/dts/xpedite5200_xmon.dts

@@ -136,7 +136,7 @@
 				reg = <0x68>;
 			};
 
-			dtt@48 {
+			dtt@34 {
 				compatible = "maxim,max1237";
 				reg = <0x34>;
 			};

arch/powerpc/include/asm/asm-compat.h

@@ -21,6 +21,7 @@
 #define PPC_STLCX	stringify_in_c(stdcx.)
 #define PPC_CNTLZL	stringify_in_c(cntlzd)
 #define PPC_MTOCRF(FXM, RS) MTOCRF((FXM), RS)
+#define PPC_SRL		stringify_in_c(srd)
 #define PPC_LR_STKOFF	16
 #define PPC_MIN_STKFRM	112
 
@@ -54,6 +55,7 @@
 #define PPC_STLCX	stringify_in_c(stwcx.)
 #define PPC_CNTLZL	stringify_in_c(cntlzw)
 #define PPC_MTOCRF	stringify_in_c(mtcrf)
+#define PPC_SRL		stringify_in_c(srw)
 #define PPC_LR_STKOFF	4
 #define PPC_MIN_STKFRM	16