Merge tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kerne…

…l/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Remove our now never-true definitions for pgd_huge() and p4d_leaf().

 - Add pte_needs_flush() and huge_pmd_needs_flush() for 64-bit.

 - Add support for syscall wrappers.

 - Add support for KFENCE on 64-bit.

 - Update 64-bit HV KVM to use the new guest state entry/exit accounting
   API.

 - Support execute-only memory when using the Radix MMU (P9 or later).

 - Implement CONFIG_PARAVIRT_TIME_ACCOUNTING for pseries guests.

 - Updates to our linker script to move more data into read-only
   sections.

 - Allow the VDSO to be randomised on 32-bit.

 - Many other small features and fixes.

Thanks to Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira
Rajeev, Christophe Leroy, David Hildenbrand, Disha Goel, Fabiano Rosas,
Gaosheng Cui, Gustavo A. R. Silva, Haren Myneni, Hari Bathini, Jilin
Yuan, Joel Stanley, Kajol Jain, Kees Cook, Krzysztof Kozlowski, Laurent
Dufour, Liang He, Li Huafei, Lukas Bulwahn, Madhavan Srinivasan, Nathan
Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Pali
Rohár, Rohan McLure, Russell Currey, Sachin Sant, Segher Boessenkool,
Shrikanth Hegde, Tyrel Datwyler, Wolfram Sang, ye xingchen, and Zheng
Yongjun.

* tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (214 commits)
  KVM: PPC: Book3S HV: Fix stack frame regs marker
  powerpc: Don't add __powerpc_ prefix to syscall entry points
  powerpc/64s/interrupt: Fix stack frame regs marker
  powerpc/64: Fix msr_check_and_set/clear MSR[EE] race
  powerpc/64s/interrupt: Change must-hard-mask interrupt check from BUG to WARN
  powerpc/pseries: Add firmware details to the hardware description
  powerpc/powernv: Add opal details to the hardware description
  powerpc: Add device-tree model to the hardware description
  powerpc/64: Add logical PVR to the hardware description
  powerpc: Add PVR & CPU name to hardware description
  powerpc: Add hardware description string
  powerpc/configs: Enable PPC_UV in powernv_defconfig
  powerpc/configs: Update config files for removed/renamed symbols
  powerpc/mm: Fix UBSAN warning reported on hugetlb
  powerpc/mm: Always update max/min_low_pfn in mem_topology_setup()
  powerpc/mm/book3s/hash: Rename flush_tlb_pmd_range
  powerpc: Drops STABS_DEBUG from linker scripts
  powerpc/64s: Remove lost/old comment
  powerpc/64s: Remove old STAB comment
  powerpc: remove orphan systbl_chk.sh
  ...

Documentation/admin-guide/kernel-parameters.txt

@@ -3629,7 +3629,7 @@
 			(bounds check bypass). With this option data leaks are
 			possible in the system.
 
-	nospectre_v2	[X86,PPC_FSL_BOOK3E,ARM64] Disable all mitigations for
+	nospectre_v2	[X86,PPC_E500,ARM64] Disable all mitigations for
 			the Spectre variant 2 (indirect branch prediction)
 			vulnerability. System may allow data leaks with this
 			option.
@@ -3748,9 +3748,9 @@
 			[X86,PV_OPS] Disable paravirtualized VMware scheduler
 			clock and use the default one.
 
-	no-steal-acc	[X86,PV_OPS,ARM64] Disable paravirtualized steal time
-			accounting. steal time is computed, but won't
-			influence scheduler behaviour
+	no-steal-acc	[X86,PV_OPS,ARM64,PPC/PSERIES] Disable paravirtualized
+			steal time accounting. steal time is computed, but
+			won't influence scheduler behaviour
 
 	nolapic		[X86-32,APIC] Do not enable or use the local APIC.
 

Documentation/powerpc/isa-versions.rst

@@ -4,12 +4,16 @@ CPU to ISA Version Mapping
 
 Mapping of some CPU versions to relevant ISA versions.
 
+Note Power4 and Power4+ are not supported.
+
 ========= ====================================================================
 CPU       Architecture version
 ========= ====================================================================
 Power10   Power ISA v3.1
 Power9    Power ISA v3.0B
 Power8    Power ISA v2.07
+e6500     Power ISA v2.06 with some exceptions
+e5500     Power ISA v2.06 with some exceptions, no Altivec
 Power7    Power ISA v2.06
 Power6    Power ISA v2.05
 PA6T      Power ISA v2.04
@@ -24,6 +28,12 @@ PPC970    - PowerPC User Instruction Set Architecture Book I v2.01
           - PowerPC Virtual Environment Architecture Book II v2.01
           - PowerPC Operating Environment Architecture Book III v2.01
           - Plus Altivec/VMX ~= 2.03
+Power4+   - PowerPC User Instruction Set Architecture Book I v2.01
+          - PowerPC Virtual Environment Architecture Book II v2.01
+          - PowerPC Operating Environment Architecture Book III v2.01
+Power4    - PowerPC User Instruction Set Architecture Book I v2.00
+          - PowerPC Virtual Environment Architecture Book II v2.00
+          - PowerPC Operating Environment Architecture Book III v2.00
 ========= ====================================================================
 
 
@@ -36,6 +46,8 @@ CPU        VMX (aka. Altivec)
 Power10    Yes
 Power9     Yes
 Power8     Yes
+e6500      Yes
+e5500      No
 Power7     Yes
 Power6     Yes
 PA6T       Yes
@@ -44,6 +56,8 @@ Power5++   No
 Power5+    No
 Power5     No
 PPC970     Yes
+Power4+    No
+Power4     No
 ========== ==================
 
 ========== ====
@@ -52,6 +66,8 @@ CPU        VSX
 Power10    Yes
 Power9     Yes
 Power8     Yes
+e6500      No
+e5500      No
 Power7     Yes
 Power6     No
 PA6T       No
@@ -60,6 +76,8 @@ Power5++   No
 Power5+    No
 Power5     No
 PPC970     No
+Power4+    No
+Power4     No
 ========== ====
 
 ========== ====================================
@@ -68,6 +86,8 @@ CPU        Transactional Memory
 Power10    No  (* see Power ISA v3.1, "Appendix A. Notes on the Removal of Transactional Memory from the Architecture")
 Power9     Yes (* see transactional_memory.txt)
 Power8     Yes
+e6500      No
+e5500      No
 Power7     No
 Power6     No
 PA6T       No
@@ -76,4 +96,6 @@ Power5++   No
 Power5+    No
 Power5     No
 PPC970     No
+Power4+    No
+Power4     No
 ========== ====================================

arch/powerpc/Kconfig

@@ -135,8 +135,9 @@ config PPC
 	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE && PPC_BOOK3S_64
 	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_KERNEL_RWX	if PPC_85xx && !HIBERNATION && !RANDOMIZE_BASE
 	select ARCH_HAS_STRICT_MODULE_RWX	if ARCH_HAS_STRICT_KERNEL_RWX
+	select ARCH_HAS_SYSCALL_WRAPPER		if !SPU_BASE && !COMPAT
 	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UACCESS_FLUSHCACHE
 	select ARCH_HAS_UBSAN_SANITIZE_ALL
@@ -194,7 +195,7 @@ config PPC
 	select HAVE_ARCH_KASAN			if PPC_RADIX_MMU
 	select HAVE_ARCH_KASAN			if PPC_BOOK3E_64
 	select HAVE_ARCH_KASAN_VMALLOC		if HAVE_ARCH_KASAN
-	select HAVE_ARCH_KFENCE			if PPC_BOOK3S_32 || PPC_8xx || 40x
+	select HAVE_ARCH_KFENCE			if ARCH_SUPPORTS_DEBUG_PAGEALLOC
 	select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_MMAP_RND_BITS
@@ -211,7 +212,7 @@ config PPC
 	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_EFFICIENT_UNALIGNED_ACCESS
 	select HAVE_FAST_GUP
 	select HAVE_FTRACE_MCOUNT_RECORD
 	select HAVE_FUNCTION_DESCRIPTORS	if PPC64_ELF_ABI_V1
@@ -290,7 +291,7 @@ config PPC_LONG_DOUBLE_128
 config PPC_BARRIER_NOSPEC
 	bool
 	default y
-	depends on PPC_BOOK3S_64 || PPC_FSL_BOOK3E
+	depends on PPC_BOOK3S_64 || PPC_E500
 
 config EARLY_PRINTK
 	bool
@@ -548,7 +549,7 @@ config PPC64_SUPPORTS_MEMORY_FAILURE
 
 config KEXEC
 	bool "kexec system call"
-	depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
+	depends on PPC_BOOK3S || PPC_E500 || (44x && !SMP)
 	select KEXEC_CORE
 	help
 	  kexec is a system call that implements the ability to shutdown your
@@ -583,7 +584,7 @@ config ARCH_HAS_KEXEC_PURGATORY
 
 config RELOCATABLE
 	bool "Build a relocatable kernel"
-	depends on PPC64 || (FLATMEM && (44x || FSL_BOOKE))
+	depends on PPC64 || (FLATMEM && (44x || PPC_85xx))
 	select NONSTATIC_KERNEL
 	help
 	  This builds a kernel image that is capable of running at the
@@ -606,7 +607,7 @@ config RELOCATABLE
 
 config RANDOMIZE_BASE
 	bool "Randomize the address of the kernel image"
-	depends on (FSL_BOOKE && FLATMEM && PPC32)
+	depends on PPC_85xx && FLATMEM
 	depends on RELOCATABLE
 	help
 	  Randomizes the virtual address at which the kernel image is
@@ -625,8 +626,8 @@ config RELOCATABLE_TEST
 
 config CRASH_DUMP
 	bool "Build a dump capture kernel"
-	depends on PPC64 || PPC_BOOK3S_32 || FSL_BOOKE || (44x && !SMP)
-	select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
+	depends on PPC64 || PPC_BOOK3S_32 || PPC_85xx || (44x && !SMP)
+	select RELOCATABLE if PPC64 || 44x || PPC_85xx
 	help
 	  Build a kernel suitable for use as a dump capture kernel.
 	  The same kernel binary can be used as production kernel and dump
@@ -815,7 +816,7 @@ config DATA_SHIFT_BOOL
 	depends on ADVANCED_OPTIONS
 	depends on STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE
 	depends on PPC_BOOK3S_32 || (PPC_8xx && !PIN_TLB_DATA && !STRICT_KERNEL_RWX) || \
-		   FSL_BOOKE
+		   PPC_85xx
 	help
 	  This option allows you to set the kernel data alignment. When
 	  RAM is mapped by blocks, the alignment needs to fit the size and
@@ -828,13 +829,13 @@ config DATA_SHIFT
 	default 24 if STRICT_KERNEL_RWX && PPC64
 	range 17 28 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32
 	range 19 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_8xx
-	range 20 24 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_FSL_BOOKE
+	range 20 24 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC || KFENCE) && PPC_85xx
 	default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32
 	default 18 if (DEBUG_PAGEALLOC || KFENCE) && PPC_BOOK3S_32
 	default 23 if STRICT_KERNEL_RWX && PPC_8xx
 	default 23 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && PIN_TLB_DATA
 	default 19 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx
-	default 24 if STRICT_KERNEL_RWX && FSL_BOOKE
+	default 24 if STRICT_KERNEL_RWX && PPC_85xx
 	default PPC_PAGE_SHIFT
 	help
 	  On Book3S 32 (603+), DBATs are used to map kernel text and rodata RO.
@@ -1150,7 +1151,7 @@ config LOWMEM_SIZE
 
 config LOWMEM_CAM_NUM_BOOL
 	bool "Set number of CAMs to use to map low memory"
-	depends on ADVANCED_OPTIONS && FSL_BOOKE
+	depends on ADVANCED_OPTIONS && PPC_85xx
 	help
 	  This option allows you to set the maximum number of CAM slots that
 	  will be used to map low memory.  There are a limited number of slots
@@ -1161,7 +1162,7 @@ config LOWMEM_CAM_NUM_BOOL
 	  Say N here unless you know what you are doing.
 
 config LOWMEM_CAM_NUM
-	depends on FSL_BOOKE
+	depends on PPC_85xx
 	int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 	default 3 if !STRICT_KERNEL_RWX
 	default 9 if DATA_SHIFT >= 24
@@ -1170,7 +1171,7 @@ config LOWMEM_CAM_NUM
 
 config DYNAMIC_MEMSTART
 	bool "Enable page aligned dynamic load address for kernel"
-	depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
+	depends on ADVANCED_OPTIONS && FLATMEM && (PPC_85xx || 44x)
 	select NONSTATIC_KERNEL
 	help
 	  This option enables the kernel to be loaded at any page aligned
@@ -1219,7 +1220,7 @@ config KERNEL_START
 
 config PHYSICAL_START_BOOL
 	bool "Set physical address where the kernel is loaded"
-	depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
+	depends on ADVANCED_OPTIONS && FLATMEM && PPC_85xx
 	help
 	  This gives the physical address where the kernel is loaded.
 
@@ -1232,7 +1233,7 @@ config PHYSICAL_START
 
 config PHYSICAL_ALIGN
 	hex
-	default "0x04000000" if FSL_BOOKE
+	default "0x04000000" if PPC_85xx
 	help
 	  This value puts the alignment restrictions on physical address
 	  where kernel is loaded and run from. Kernel is compiled for an

arch/powerpc/Kconfig.debug

@@ -283,6 +283,12 @@ config PPC_EARLY_DEBUG_MEMCONS
 	  This console provides input and output buffers stored within the
 	  kernel BSS and should be safe to select on any system. A debugger
 	  can then be used to read kernel output or send input to the console.
+
+config PPC_EARLY_DEBUG_16550
+	bool "Serial 16550"
+	depends on PPC_UDBG_16550
+	help
+	  Select this to enable early debugging via Serial 16550 console
 endchoice
 
 config PPC_MEMCONS_OUTPUT_SIZE
@@ -354,6 +360,15 @@ config PPC_EARLY_DEBUG_CPM_ADDR
 	  platform probing is done, all platforms selected must
 	  share the same address.
 
+config PPC_EARLY_DEBUG_16550_PHYSADDR
+	hex "Early debug Serial 16550 physical address"
+	depends on PPC_EARLY_DEBUG_16550
+
+config PPC_EARLY_DEBUG_16550_STRIDE
+	int "Early debug Serial 16550 stride"
+	depends on PPC_EARLY_DEBUG_16550
+	default 1
+
 config FAIL_IOMMU
 	bool "Fault-injection capability for IOMMU"
 	depends on FAULT_INJECTION

arch/powerpc/Makefile

@@ -149,11 +149,12 @@ CFLAGS-$(CONFIG_PPC32)	+= $(call cc-option,-mno-readonly-in-sdata)
 ifdef CONFIG_PPC_BOOK3S_64
 ifdef CONFIG_CPU_LITTLE_ENDIAN
 CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8
-CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8)
 else
-CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5))
-CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4)
+CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power4
 endif
+CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power10,	\
+				  $(call cc-option,-mtune=power9,	\
+				  $(call cc-option,-mtune=power8)))
 else ifdef CONFIG_PPC_BOOK3E_64
 CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
 endif
@@ -191,9 +192,14 @@ ifdef CONFIG_476FPE_ERR46
 		-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
 endif
 
-# No AltiVec or VSX instructions when building kernel
+# No prefix or pcrel
+KBUILD_CFLAGS += $(call cc-option,-mno-prefixed)
+KBUILD_CFLAGS += $(call cc-option,-mno-pcrel)
+
+# No AltiVec or VSX or MMA instructions when building kernel
 KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
 KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
+KBUILD_CFLAGS += $(call cc-option,-mno-mma)
 
 # No SPE instruction when building kernel
 # (We use all available options to help semi-broken compilers)
@@ -210,7 +216,7 @@ KBUILD_CFLAGS		+= $(call cc-option,-mno-string)
 cpu-as-$(CONFIG_40x)		+= -Wa,-m405
 cpu-as-$(CONFIG_44x)		+= -Wa,-m440
 cpu-as-$(CONFIG_ALTIVEC)	+= $(call as-option,-Wa$(comma)-maltivec)
-cpu-as-$(CONFIG_E500)		+= -Wa,-me500
+cpu-as-$(CONFIG_PPC_E500)		+= -Wa,-me500
 
 # When using '-many -mpower4' gas will first try and find a matching power4
 # mnemonic and failing that it will allow any valid mnemonic that GAS knows
@@ -231,7 +237,7 @@ head-$(CONFIG_PPC_BOOK3S_32)	:= arch/powerpc/kernel/head_book3s_32.o
 head-$(CONFIG_PPC_8xx)		:= arch/powerpc/kernel/head_8xx.o
 head-$(CONFIG_40x)		:= arch/powerpc/kernel/head_40x.o
 head-$(CONFIG_44x)		:= arch/powerpc/kernel/head_44x.o
-head-$(CONFIG_FSL_BOOKE)	:= arch/powerpc/kernel/head_fsl_booke.o
+head-$(CONFIG_PPC_85xx)	:= arch/powerpc/kernel/head_85xx.o
 
 head-$(CONFIG_PPC64)		+= arch/powerpc/kernel/entry_64.o
 head-$(CONFIG_PPC_FPU)		+= arch/powerpc/kernel/fpu.o

arch/powerpc/boot/44x.h

@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * PowerPC 44x related functions
  *
  * Copyright 2007 David Gibson, IBM Corporation.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 #ifndef _PPC_BOOT_44X_H_
 #define _PPC_BOOT_44X_H_

arch/powerpc/boot/4xx.h

@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * PowerPC 4xx related functions
  *
  * Copyright 2007 IBM Corporation.
  * Josh Boyer <jwboyer@linux.vnet.ibm.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 #ifndef _POWERPC_BOOT_4XX_H_
 #define _POWERPC_BOOT_4XX_H_

arch/powerpc/boot/Makefile

@@ -34,6 +34,7 @@ endif
 
 BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 		 -fno-strict-aliasing -O2 -msoft-float -mno-altivec -mno-vsx \
+		 $(call cc-option,-mno-spe) $(call cc-option,-mspe=no) \
 		 -pipe -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
 		 $(LINUXINCLUDE)