Automatic merge of 'next-test' into merge-test (2024-10-29 23:02)

Documentation/arch/powerpc/booting.rst

@@ -93,8 +93,8 @@ given platform based on the content of the device-tree. Thus, you
 should:
 
         a) add your platform support as a _boolean_ option in
-        arch/powerpc/Kconfig, following the example of PPC_PSERIES,
-        PPC_PMAC and PPC_MAPLE. The latter is probably a good
+        arch/powerpc/Kconfig, following the example of PPC_PSERIES
+        and PPC_PMAC. The latter is probably a good
         example of a board support to start from.
 
         b) create your main platform file as

arch/powerpc/Kconfig

@@ -275,8 +275,8 @@ config PPC
 	select HAVE_RSEQ
 	select HAVE_SETUP_PER_CPU_AREA		if PPC64
 	select HAVE_SOFTIRQ_ON_OWN_STACK
-	select HAVE_STACKPROTECTOR		if PPC32 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r2)
-	select HAVE_STACKPROTECTOR		if PPC64 && $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=r13)
+	select HAVE_STACKPROTECTOR		if PPC32 && $(cc-option,$(m32-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 -mstack-protector-guard-offset=0)
+	select HAVE_STACKPROTECTOR		if PPC64 && $(cc-option,$(m64-flag) -mstack-protector-guard=tls -mstack-protector-guard-reg=r13 -mstack-protector-guard-offset=0)
 	select HAVE_STATIC_CALL			if PPC32
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_VIRT_CPU_ACCOUNTING

arch/powerpc/Kconfig.debug

@@ -223,12 +223,6 @@ config PPC_EARLY_DEBUG_RTAS_CONSOLE
 	help
 	  Select this to enable early debugging via the RTAS console.
 
-config PPC_EARLY_DEBUG_MAPLE
-	bool "Maple real mode"
-	depends on PPC_MAPLE
-	help
-	  Select this to enable early debugging for Maple.
-
 config PPC_EARLY_DEBUG_PAS_REALMODE
 	bool "PA Semi real mode"
 	depends on PPC_PASEMI

arch/powerpc/Makefile

@@ -100,13 +100,6 @@ KBUILD_AFLAGS	+= -m$(BITS)
 KBUILD_LDFLAGS	+= -m elf$(BITS)$(LDEMULATION)
 endif
 
-cflags-$(CONFIG_STACKPROTECTOR)	+= -mstack-protector-guard=tls
-ifdef CONFIG_PPC64
-cflags-$(CONFIG_STACKPROTECTOR)	+= -mstack-protector-guard-reg=r13
-else
-cflags-$(CONFIG_STACKPROTECTOR)	+= -mstack-protector-guard-reg=r2
-endif
-
 LDFLAGS_vmlinux-y := -Bstatic
 LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
 LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) += -z notext
@@ -359,7 +352,7 @@ define archhelp
   echo '  install         - Install kernel using'
   echo '                    (your) ~/bin/$(INSTALLKERNEL) or'
   echo '                    (distribution) /sbin/$(INSTALLKERNEL) or'
-  echo '                    install to $$(INSTALL_PATH) and run lilo'
+  echo '                    install to $$(INSTALL_PATH)'
   echo '  *_defconfig     - Select default config from arch/powerpc/configs'
   echo ''
   echo '  Targets with <dt> embed a device tree blob inside the image'
@@ -402,9 +395,11 @@ prepare: stack_protector_prepare
 PHONY += stack_protector_prepare
 stack_protector_prepare: prepare0
 ifdef CONFIG_PPC64
-	$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h))
+	$(eval KBUILD_CFLAGS += -mstack-protector-guard=tls -mstack-protector-guard-reg=r13 \
+				-mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h))
 else
-	$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h))
+	$(eval KBUILD_CFLAGS += -mstack-protector-guard=tls -mstack-protector-guard-reg=r2 \
+				-mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h))
 endif
 endif
 

arch/powerpc/boot/.gitignore

@@ -30,7 +30,6 @@ zImage.coff
 zImage.epapr
 zImage.holly
 zImage.*lds
-zImage.maple
 zImage.miboot
 zImage.pmac
 zImage.pseries

arch/powerpc/boot/Makefile

@@ -276,7 +276,6 @@ quiet_cmd_wrap	= WRAP    $@
 
 image-$(CONFIG_PPC_PSERIES)		+= zImage.pseries
 image-$(CONFIG_PPC_POWERNV)		+= zImage.pseries
-image-$(CONFIG_PPC_MAPLE)		+= zImage.maple
 image-$(CONFIG_PPC_IBM_CELL_BLADE)	+= zImage.pseries
 image-$(CONFIG_PPC_PS3)			+= dtbImage.ps3
 image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
@@ -444,7 +443,7 @@ $(obj)/zImage.initrd:	$(addprefix $(obj)/, $(initrd-y))
 clean-files += $(image-) $(initrd-) cuImage.* dtbImage.* treeImage.* \
 	zImage zImage.initrd zImage.chrp zImage.coff zImage.holly \
 	zImage.miboot zImage.pmac zImage.pseries \
-	zImage.maple simpleImage.* otheros.bld
+	simpleImage.* otheros.bld
 
 # clean up files cached by wrapper
 clean-kernel-base := vmlinux.strip vmlinux.bin

arch/powerpc/boot/wrapper

@@ -271,11 +271,6 @@ pseries)
     fi
     make_space=n
     ;;
-maple)
-    platformo="$object/of.o $object/epapr.o"
-    link_address='0x400000'
-    make_space=n
-    ;;
 pmac|chrp)
     platformo="$object/of.o $object/epapr.o"
     make_space=n
@@ -517,7 +512,7 @@ fi
 
 # post-processing needed for some platforms
 case "$platform" in
-pseries|chrp|maple)
+pseries|chrp)
     $objbin/addnote "$ofile"
     ;;
 coff)

arch/powerpc/configs/ppc64_defconfig

@@ -44,7 +44,6 @@ CONFIG_PPC_SMLPAR=y
 CONFIG_IBMEBUS=y
 CONFIG_PAPR_SCM=m
 CONFIG_PPC_SVM=y
-CONFIG_PPC_MAPLE=y
 CONFIG_PPC_PASEMI=y
 CONFIG_PPC_PASEMI_IOMMU=y
 CONFIG_PPC_PS3=y

arch/powerpc/include/asm/dtl.h

@@ -1,8 +1,8 @@
 #ifndef _ASM_POWERPC_DTL_H
 #define _ASM_POWERPC_DTL_H
 
+#include <linux/rwsem.h>
 #include <asm/lppaca.h>
-#include <linux/spinlock_types.h>
 
 /*
  * Layout of entries in the hypervisor's dispatch trace log buffer.
@@ -35,7 +35,7 @@ struct dtl_entry {
 #define DTL_LOG_ALL		(DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT)
 
 extern struct kmem_cache *dtl_cache;
-extern rwlock_t dtl_access_lock;
+extern struct rw_semaphore dtl_access_lock;
 
 extern void register_dtl_buffer(int cpu);
 extern void alloc_dtl_buffers(unsigned long *time_limit);

arch/powerpc/include/asm/fadump.h

@@ -34,4 +34,11 @@ extern int early_init_dt_scan_fw_dump(unsigned long node, const char *uname,
 				      int depth, void *data);
 extern int fadump_reserve_mem(void);
 #endif
+
+#if defined(CONFIG_FA_DUMP) && defined(CONFIG_CMA)
+void fadump_cma_init(void);
+#else
+static inline void fadump_cma_init(void) { }
+#endif
+
 #endif /* _ASM_POWERPC_FADUMP_H */

arch/powerpc/include/asm/kfence.h

@@ -15,7 +15,7 @@
 #define ARCH_FUNC_PREFIX "."
 #endif
 
-#ifdef CONFIG_KFENCE
+extern bool kfence_early_init;
 extern bool kfence_disabled;
 
 static inline void disable_kfence(void)
@@ -27,7 +27,11 @@ static inline bool arch_kfence_init_pool(void)
 {
 	return !kfence_disabled;
 }
-#endif
+
+static inline bool kfence_early_init_enabled(void)
+{
+	return IS_ENABLED(CONFIG_KFENCE) && kfence_early_init;
+}
 
 #ifdef CONFIG_PPC64
 static inline bool kfence_protect_page(unsigned long addr, bool protect)

arch/powerpc/include/asm/machdep.h

@@ -4,20 +4,24 @@
 #ifdef __KERNEL__
 
 #include <linux/compiler.h>
-#include <linux/seq_file.h>
 #include <linux/init.h>
-#include <linux/dma-mapping.h>
 #include <linux/export.h>
+#include <linux/time64.h>
+
+#include <asm/page.h>
 
 struct pt_regs;
 struct pci_bus;
+struct device;
 struct device_node;
 struct iommu_table;
 struct rtc_time;
 struct file;
+struct pci_dev;
 struct pci_controller;
 struct kimage;
 struct pci_host_bridge;
+struct seq_file;
 
 struct machdep_calls {
 	const char	*name;

arch/powerpc/include/asm/udbg.h

@@ -38,7 +38,6 @@ void __init udbg_early_init(void);
 void __init udbg_init_debug_lpar(void);
 void __init udbg_init_debug_lpar_hvsi(void);
 void __init udbg_init_pmac_realmode(void);
-void __init udbg_init_maple_realmode(void);
 void __init udbg_init_pas_realmode(void);
 void __init udbg_init_rtas_panel(void);
 void __init udbg_init_rtas_console(void);

arch/powerpc/kernel/asm-offsets.c

@@ -596,7 +596,6 @@ int main(void)
 	HSTATE_FIELD(HSTATE_DABR, dabr);
 	HSTATE_FIELD(HSTATE_DECEXP, dec_expires);
 	HSTATE_FIELD(HSTATE_SPLIT_MODE, kvm_split_mode);
-	DEFINE(IPI_PRIORITY, IPI_PRIORITY);
 	OFFSET(KVM_SPLIT_RPR, kvm_split_mode, rpr);
 	OFFSET(KVM_SPLIT_PMMAR, kvm_split_mode, pmmar);
 	OFFSET(KVM_SPLIT_LDBAR, kvm_split_mode, ldbar);