Merge tag 'powerpc-4.13-1' of git://git.kernel.org/pub/scm/linux/kern…

…el/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights include:

   - Support for STRICT_KERNEL_RWX on 64-bit server CPUs.

   - Platform support for FSP2 (476fpe) board

   - Enable ZONE_DEVICE on 64-bit server CPUs.

   - Generic & powerpc spin loop primitives to optimise busy waiting

   - Convert VDSO update function to use new update_vsyscall() interface

   - Optimisations to hypercall/syscall/context-switch paths

   - Improvements to the CPU idle code on Power8 and Power9.

  As well as many other fixes and improvements.

  Thanks to: Akshay Adiga, Andrew Donnellan, Andrew Jeffery, Anshuman
  Khandual, Anton Blanchard, Balbir Singh, Benjamin Herrenschmidt,
  Christophe Leroy, Christophe Lombard, Colin Ian King, Dan Carpenter,
  Gautham R. Shenoy, Hari Bathini, Ian Munsie, Ivan Mikhaylov, Javier
  Martinez Canillas, Madhavan Srinivasan, Masahiro Yamada, Matt Brown,
  Michael Neuling, Michal Suchanek, Murilo Opsfelder Araujo, Naveen N.
  Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pavel Machek,
  Russell Currey, Santosh Sivaraj, Stephen Rothwell, Thiago Jung
  Bauermann, Yang Li"

* tag 'powerpc-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (158 commits)
  powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs
  powerpc/mm/radix: Implement STRICT_RWX/mark_rodata_ro() for Radix
  powerpc/mm/hash: Implement mark_rodata_ro() for hash
  powerpc/vmlinux.lds: Align __init_begin to 16M
  powerpc/lib/code-patching: Use alternate map for patch_instruction()
  powerpc/xmon: Add patch_instruction() support for xmon
  powerpc/kprobes/optprobes: Use patch_instruction()
  powerpc/kprobes: Move kprobes over to patch_instruction()
  powerpc/mm/radix: Fix execute permissions for interrupt_vectors
  powerpc/pseries: Fix passing of pp0 in updatepp() and updateboltedpp()
  powerpc/64s: Blacklist rtas entry/exit from kprobes
  powerpc/64s: Blacklist functions invoked on a trap
  powerpc/64s: Un-blacklist system_call() from kprobes
  powerpc/64s: Move system_call() symbol to just after setting MSR_EE
  powerpc/64s: Blacklist system_call() and system_call_common() from kprobes
  powerpc/64s: Convert .L__replay_interrupt_return to a local label
  powerpc64/elfv1: Only dereference function descriptor for non-text symbols
  cxl: Export library to support IBM XSL
  powerpc/dts: Use #include "..." to include local DT
  powerpc/perf/hv-24x7: Aggregate result elements on POWER9 SMT8
  ...

Documentation/powerpc/firmware-assisted-dump.txt

@@ -61,8 +61,8 @@ as follows:
          boot successfully. For syntax of crashkernel= parameter,
          refer to Documentation/kdump/kdump.txt. If any offset is
          provided in crashkernel= parameter, it will be ignored
-         as fadump reserves memory at end of RAM for boot memory
-         dump preservation in case of a crash.
+         as fadump uses a predefined offset to reserve memory
+         for boot memory dump preservation in case of a crash.
 
 -- After the low memory (boot memory) area has been saved, the
    firmware will reset PCI and other hardware state.  It will

MAINTAINERS

@@ -3781,8 +3781,8 @@ S:	Supported
 F:	drivers/net/ethernet/chelsio/cxgb4vf/
 
 CXL (IBM Coherent Accelerator Processor Interface CAPI) DRIVER
-M:	Ian Munsie <[email protected]>
 M:	Frederic Barrat <[email protected]>
+M:	Andrew Donnellan <[email protected]>
 L:	[email protected]
 S:	Supported
 F:	arch/powerpc/platforms/powernv/pci-cxl.c
@@ -5352,7 +5352,7 @@ S:	Maintained
 F:	drivers/video/fbdev/fsl-diu-fb.*
 
 FREESCALE DMA DRIVER
-M:	Li Yang <leoli@freescale.com>
+M:	Li Yang <leoyang.li@nxp.com>
 M:	Zhang Wei <[email protected]>
 L:	[email protected]
 S:	Maintained
@@ -5417,11 +5417,11 @@ S:	Maintained
 F:	drivers/net/ethernet/freescale/dpaa
 
 FREESCALE SOC DRIVERS
-M:	Scott Wood <[email protected]>
+M:	Li Yang <[email protected]>
 L:	[email protected]
 L:	[email protected]
 S:	Maintained
-F:	Documentation/devicetree/bindings/powerpc/fsl/
+F:	Documentation/devicetree/bindings/soc/fsl/
 F:	drivers/soc/fsl/
 F:	include/linux/fsl/
 
@@ -5434,14 +5434,14 @@ F:	include/soc/fsl/*qe*.h
 F:	include/soc/fsl/*ucc*.h
 
 FREESCALE USB PERIPHERAL DRIVERS
-M:	Li Yang <leoli@freescale.com>
+M:	Li Yang <leoyang.li@nxp.com>
 L:	[email protected]
 L:	[email protected]
 S:	Maintained
 F:	drivers/usb/gadget/udc/fsl*
 
 FREESCALE QUICC ENGINE UCC ETHERNET DRIVER
-M:	Li Yang <leoli@freescale.com>
+M:	Li Yang <leoyang.li@nxp.com>
 L:	[email protected]
 L:	[email protected]
 S:	Maintained
@@ -7784,6 +7784,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux.git
 S:	Maintained
 F:	arch/powerpc/platforms/83xx/
 F:	arch/powerpc/platforms/85xx/
+F:	Documentation/devicetree/bindings/powerpc/fsl/
 
 LINUX FOR POWERPC PA SEMI PWRFICIENT
 L:	[email protected]

arch/powerpc/Kconfig

@@ -109,14 +109,6 @@ config GENERIC_LOCKBREAK
 	default y
 	depends on SMP && PREEMPT
 
-config ARCH_HAS_ILOG2_U32
-	bool
-	default y
-
-config ARCH_HAS_ILOG2_U64
-	bool
-	default y if 64BIT
-
 config GENERIC_HWEIGHT
 	bool
 	default y
@@ -138,6 +130,7 @@ config PPC
 	select ARCH_HAS_SG_CHAIN
 	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UBSAN_SANITIZE_ALL
+	select ARCH_HAS_ZONE_DEVICE		if PPC_BOOK3S_64
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
@@ -163,14 +156,16 @@ config PPC
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_STRNCPY_FROM_USER
 	select GENERIC_STRNLEN_USER
-	select GENERIC_TIME_VSYSCALL_OLD
+	select GENERIC_TIME_VSYSCALL
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_MMAP_RND_BITS
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
+	select ARCH_HAS_STRICT_KERNEL_RWX	if (PPC_BOOK3S_64 && !RELOCATABLE && !HIBERNATION)
+	select ARCH_OPTIONAL_KERNEL_RWX		if ARCH_HAS_STRICT_KERNEL_RWX
 	select HAVE_CBPF_JIT			if !PPC64
 	select HAVE_CONTEXT_TRACKING		if PPC64
 	select HAVE_DEBUG_KMEMLEAK
@@ -208,6 +203,7 @@ config PPC
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_VIRT_CPU_ACCOUNTING
+	select HAVE_IRQ_TIME_ACCOUNTING
 	select IRQ_DOMAIN
 	select IRQ_FORCED_THREADING
 	select MODULES_USE_ELF_RELA
@@ -438,6 +434,17 @@ config PPC_TRANSACTIONAL_MEM
        ---help---
          Support user-mode Transactional Memory on POWERPC.
 
+config LD_HEAD_STUB_CATCH
+	bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT
+	depends on PPC64
+	default n
+	help
+	  Very large kernels can cause linker branch stubs to be generated by
+	  code in head_64.S, which moves the head text sections out of their
+	  specified location. This option can work around the problem.
+
+	  If unsure, say "N".
+
 config DISABLE_MPROFILE_KERNEL
 	bool "Disable use of mprofile-kernel for kernel tracing"
 	depends on PPC64 && CPU_LITTLE_ENDIAN

arch/powerpc/Makefile

@@ -98,6 +98,7 @@ endif
 LDFLAGS_vmlinux-y := -Bstatic
 LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
 LDFLAGS_vmlinux	:= $(LDFLAGS_vmlinux-y)
+LDFLAGS_vmlinux += $(call ld-option,--orphan-handling=warn)
 
 ifeq ($(CONFIG_PPC64),y)
 ifeq ($(call cc-option-yn,-mcmodel=medium),y)
@@ -189,7 +190,17 @@ else
 CHECKFLAGS	+= -D__LITTLE_ENDIAN__
 endif
 
+ifdef CONFIG_PPC32
 KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
+else
+ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
+# Have the linker provide sfpr if possible.
+# There is a corresponding test in arch/powerpc/lib/Makefile
+KBUILD_LDFLAGS_MODULE += --save-restore-funcs
+else
+KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
+endif
+endif
 
 ifeq ($(CONFIG_476FPE_ERR46),y)
 	KBUILD_LDFLAGS_MODULE += --ppc476-workaround \

arch/powerpc/Makefile.postlink

@@ -10,13 +10,26 @@ __archpost:
 -include include/config/auto.conf
 include scripts/Kbuild.include
 
+quiet_cmd_head_check = CHKHEAD $@
+      cmd_head_check = $(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/head_check.sh "$(NM)" "$@"
+
 quiet_cmd_relocs_check = CHKREL  $@
-      cmd_relocs_check = $(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$@"
+ifdef CONFIG_PPC_BOOK3S_64
+      cmd_relocs_check =						\
+	$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$@" ; \
+	$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/unrel_branch_check.sh "$(OBJDUMP)" "$@"
+else
+      cmd_relocs_check =						\
+	$(CONFIG_SHELL) $(srctree)/arch/powerpc/tools/relocs_check.sh "$(OBJDUMP)" "$@"
+endif
 
 # `@true` prevents complaint when there is nothing to be done
 
 vmlinux: FORCE
 	@true
+ifdef CONFIG_PPC64
+	$(call cmd,head_check)
+endif
 ifdef CONFIG_RELOCATABLE
 	$(call if_changed,relocs_check)
 endif
@@ -25,7 +38,7 @@ endif
 	@true
 
 clean:
-	@true
+	rm -f .tmp_symbols.txt
 
 PHONY += FORCE clean
 

arch/powerpc/boot/Makefile

@@ -95,13 +95,16 @@ libfdtheader := fdt.h libfdt.h libfdt_internal.h
 $(addprefix $(obj)/,$(libfdt) libfdt-wrapper.o simpleboot.o epapr.o opal.o): \
 	$(addprefix $(obj)/,$(libfdtheader))
 
-src-wlib-y := string.S crt0.S crtsavres.S stdio.c decompress.c main.c \
+src-wlib-y := string.S crt0.S stdio.c decompress.c main.c \
 		$(libfdt) libfdt-wrapper.c \
 		ns16550.c serial.c simple_alloc.c div64.S util.S \
 		elf_util.c $(zlib-y) devtree.c stdlib.c \
 		oflib.c ofconsole.c cuboot.c mpsc.c cpm-serial.c \
 		uartlite.c mpc52xx-psc.c opal.c
 src-wlib-$(CONFIG_PPC64_BOOT_WRAPPER) +=  opal-calls.S
+ifndef CONFIG_PPC64_BOOT_WRAPPER
+src-wlib-y += crtsavres.S
+endif
 src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c
 src-wlib-$(CONFIG_44x) += 4xx.c ebony.c bamboo.c
 src-wlib-$(CONFIG_8xx) += mpc8xx.c planetcore.c fsl-soc.c

arch/powerpc/boot/crtsavres.S

@@ -37,12 +37,13 @@
  *    the executable file might be covered by the GNU General Public License.
  */
 
+#ifdef __powerpc64__
+#error "On PPC64, FPR save/restore functions are provided by the linker."
+#endif
+
 	.file	"crtsavres.S"
 	.section ".text"
 
-/* On PowerPC64 Linux, these functions are provided by the linker.  */
-#ifndef __powerpc64__
-
 #define _GLOBAL(name) \
 	.type name,@function; \
 	.globl name; \
@@ -230,4 +231,3 @@ _GLOBAL(_rest32gpr_31_x)
 	mtlr	0
 	mr	1,11
 	blr
-#endif

arch/powerpc/boot/dts/ac14xx.dts

@@ -10,7 +10,7 @@
  */
 
 
-#include <mpc5121.dtsi>
+#include "mpc5121.dtsi"
 
 / {
 	model = "ac14xx";

arch/powerpc/boot/dts/digsy_mtc.dts

@@ -73,7 +73,7 @@
 
 		i2c@3d00 {
 			eeprom@50 {
-				compatible = "at,24c08";
+				compatible = "atmel,24c08";
 				reg = <0x50>;
 			};
 

arch/powerpc/boot/dts/fsl/b4qds.dtsi

@@ -166,19 +166,19 @@
 					reg = <0>;
 
 					eeprom@50 {
-						compatible = "at24,24c64";
+						compatible = "atmel,24c64";
 						reg = <0x50>;
 					};
 					eeprom@51 {
-						compatible = "at24,24c256";
+						compatible = "atmel,24c256";
 						reg = <0x51>;
 					};
 					eeprom@53 {
-						compatible = "at24,24c256";
+						compatible = "atmel,24c256";
 						reg = <0x53>;
 					};
 					eeprom@57 {
-						compatible = "at24,24c256";
+						compatible = "atmel,24c256";
 						reg = <0x57>;
 					};
 					rtc@68 {

arch/powerpc/boot/dts/fsl/c293pcie.dts

@@ -153,7 +153,7 @@
 &soc {
 	i2c@3000 {
 		eeprom@50 {
-			compatible = "st,24c1024";
+			compatible = "st,24c1024", "atmel,24c1024";
 			reg = <0x50>;
 		};
 

arch/powerpc/boot/dts/fsl/p1010rdb.dtsi

@@ -89,7 +89,7 @@
 &board_soc {
 	i2c@3000 {
 		eeprom@50 {
-			compatible = "st,24c256";
+			compatible = "st,24c256", "atmel,24c256";
 			reg = <0x50>;
 		};
 

arch/powerpc/boot/dts/fsl/p1023rdb.dts

@@ -79,7 +79,7 @@
 
 		i2c@3000 {
 			eeprom@53 {
-				compatible = "at24,24c04";
+				compatible = "atmel,24c04";
 				reg = <0x53>;
 			};
 

arch/powerpc/boot/dts/fsl/p2041rdb.dts

@@ -127,7 +127,7 @@
 				reg = <0x48>;
 			};
 			eeprom@50 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x50>;
 			};
 			rtc@68 {
@@ -142,7 +142,7 @@
 
 		i2c@118100 {
 			eeprom@50 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x50>;
 			};
 		};

arch/powerpc/boot/dts/fsl/p3041ds.dts

@@ -124,11 +124,11 @@
 
 		i2c@118100 {
 			eeprom@51 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x51>;
 			};
 			eeprom@52 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x52>;
 			};
 		};

arch/powerpc/boot/dts/fsl/p4080ds.dts

@@ -125,11 +125,11 @@
 
 		i2c@118100 {
 			eeprom@51 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x51>;
 			};
 			eeprom@52 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x52>;
 			};
 			rtc@68 {

arch/powerpc/boot/dts/fsl/p5020ds.dts

@@ -124,11 +124,11 @@
 
 		i2c@118100 {
 			eeprom@51 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x51>;
 			};
 			eeprom@52 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x52>;
 			};
 		};

arch/powerpc/boot/dts/fsl/p5040ds.dts

@@ -133,11 +133,11 @@
 
 		i2c@118100 {
 			eeprom@51 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x51>;
 			};
 			eeprom@52 {
-				compatible = "at24,24c256";
+				compatible = "atmel,24c256";
 				reg = <0x52>;
 			};
 		};