Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King: - lots of build cleanups from Arnd spread throughout the arch/arm tree - replace strlcpy() with the preferred strscpy() - use sign_extend32() in the module linker - drop handle_irq() machine descriptor method * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9315/1: fiq: include asm/mach/irq.h for prototypes ARM: 9314/1: tcm: move tcm_init() prototype to asm/tcm.h ARM: 9313/1: vdso: add missing prototypes ARM: 9312/1: vfp: include asm/neon.h in vfpmodule.c ARM: 9311/1: decompressor: move function prototypes to misc.h ARM: 9310/1: xip-kernel: add __inflate_kernel_data prototype ARM: 9309/1: add missing syscall prototypes ARM: 9308/1: move setup functions to header ARM: 9307/1: nommu: include asm/idmap.h ARM: 9306/1: cacheflush: avoid __flush_anon_page() missing-prototype warning ARM: 9305/1: add clear/copy_user_highpage declarations ARM: 9304/1: add prototype for function called only from asm ARM: 9303/1: kprobes: avoid missing-declaration warnings ARM: 9302/1: traps: hide unused functions on NOMMU ARM: 9301/1: dma-mapping: hide unused dma_contiguous_early_fixup function ARM: 9300/1: Replace all non-returning strlcpy with strscpy ARM: 9299/1: module: use sign_extend32() to extend the signedness ARM: 9298/1: Drop custom mdesc->handle_irq()
wshizhx · Jun 27, 2023 · 2b603cd · 2b603cd
2 parents f810c18 + 85e18ed
commit 2b603cd
Show file tree

Hide file tree

Showing 55 changed files with 185 additions and 80 deletions.
diff --git a/arch/arm/boot/compressed/atags_to_fdt.c b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -2,6 +2,7 @@
 #include <linux/libfdt_env.h>
 #include <asm/setup.h>
 #include <libfdt.h>
+#include "misc.h"
 
 #if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND)
 #define do_extend_cmdline 1

diff --git a/arch/arm/boot/compressed/fdt_check_mem_start.c b/arch/arm/boot/compressed/fdt_check_mem_start.c
@@ -3,6 +3,7 @@
 #include <linux/kernel.h>
 #include <linux/libfdt.h>
 #include <linux/sizes.h>
+#include "misc.h"
 
 static const void *get_prop(const void *fdt, const char *node_path,
 			    const char *property, int minlen)

diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
@@ -103,9 +103,6 @@ static void putstr(const char *ptr)
 /*
  * gzip declarations
  */
-extern char input_data[];
-extern char input_data_end[];
-
 unsigned char *output_data;
 
 unsigned long free_mem_ptr;
@@ -131,9 +128,6 @@ asmlinkage void __div0(void)
 	error("Attempting division by 0!");
 }
 
-extern int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));
-
-
 void
 decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
 		unsigned long free_mem_ptr_end_p,

diff --git a/arch/arm/boot/compressed/misc.h b/arch/arm/boot/compressed/misc.h
@@ -6,5 +6,16 @@
 void error(char *x) __noreturn;
 extern unsigned long free_mem_ptr;
 extern unsigned long free_mem_end_ptr;
+void __div0(void);
+void
+decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
+		  unsigned long free_mem_ptr_end_p, int arch_id);
+void fortify_panic(const char *name);
+int atags_to_fdt(void *atag_list, void *fdt, int total_space);
+uint32_t fdt_check_mem_start(uint32_t mem_start, const void *fdt);
+int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));
+
+extern char input_data[];
+extern char input_data_end[];
 
 #endif
diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
@@ -75,6 +75,10 @@ static inline bool arch_syscall_match_sym_name(const char *sym,
 	return !strcasecmp(sym, name);
 }
 
+void prepare_ftrace_return(unsigned long *parent, unsigned long self,
+			   unsigned long frame_pointer,
+			   unsigned long stack_pointer);
+
 #endif /* ifndef __ASSEMBLY__ */
 
 #endif /* _ASM_ARM_FTRACE */
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
@@ -56,7 +56,6 @@ struct machine_desc {
 	void			(*init_time)(void);
 	void			(*init_machine)(void);
 	void			(*init_late)(void);
-	void			(*handle_irq)(struct pt_regs *);
 	void			(*restart)(enum reboot_mode, const char *);
 };
 

diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
@@ -113,6 +113,28 @@ struct cpu_user_fns {
 			unsigned long vaddr, struct vm_area_struct *vma);
 };
 
+void fa_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void fa_clear_user_highpage(struct page *page, unsigned long vaddr);
+void feroceon_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void feroceon_clear_user_highpage(struct page *page, unsigned long vaddr);
+void v4_mc_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void v4_mc_clear_user_highpage(struct page *page, unsigned long vaddr);
+void v4wb_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void v4wb_clear_user_highpage(struct page *page, unsigned long vaddr);
+void v4wt_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void v4wt_clear_user_highpage(struct page *page, unsigned long vaddr);
+void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void xsc3_mc_clear_user_highpage(struct page *page, unsigned long vaddr);
+void xscale_mc_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void xscale_mc_clear_user_highpage(struct page *page, unsigned long vaddr);
+
 #ifdef MULTI_USER
 extern struct cpu_user_fns cpu_user;
 

diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
@@ -193,5 +193,8 @@ static inline unsigned long it_advance(unsigned long cpsr)
 	return cpsr;
 }
 
+int syscall_trace_enter(struct pt_regs *regs);
+void syscall_trace_exit(struct pt_regs *regs);
+
 #endif /* __ASSEMBLY__ */
 #endif
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
@@ -28,4 +28,11 @@ extern void save_atags(const struct tag *tags);
 static inline void save_atags(const struct tag *tags) { }
 #endif
 
+struct machine_desc;
+void init_default_cache_policy(unsigned long);
+void paging_init(const struct machine_desc *desc);
+void early_mm_init(const struct machine_desc *);
+void adjust_lowmem_bounds(void);
+void setup_dma_zone(const struct machine_desc *desc);
+
 #endif
diff --git a/arch/arm/include/asm/signal.h b/arch/arm/include/asm/signal.h
@@ -22,4 +22,9 @@ typedef struct {
 #define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
+
+void do_rseq_syscall(struct pt_regs *regs);
+int do_work_pending(struct pt_regs *regs, unsigned int thread_flags,
+		    int syscall);
+
 #endif
diff --git a/arch/arm/include/asm/spectre.h b/arch/arm/include/asm/spectre.h
@@ -35,4 +35,8 @@ static inline void spectre_v2_update_state(unsigned int state,
 
 int spectre_bhb_update_vectors(unsigned int method);
 
+void cpu_v7_ca8_ibe(void);
+void cpu_v7_ca15_ibe(void);
+void cpu_v7_bugs_init(void);
+
 #endif
diff --git a/arch/arm/include/asm/suspend.h b/arch/arm/include/asm/suspend.h
@@ -13,5 +13,6 @@ extern void cpu_resume(void);
 extern void cpu_resume_no_hyp(void);
 extern void cpu_resume_arm(void);
 extern int cpu_suspend(unsigned long, int (*)(unsigned long));
+extern void __cpu_suspend_save(u32 *ptr, u32 ptrsz, u32 sp, u32 *save_ptr);
 
 #endif
diff --git a/arch/arm/include/asm/syscalls.h b/arch/arm/include/asm/syscalls.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_SYSCALLS_H
+#define __ASM_SYSCALLS_H
+
+#include <linux/linkage.h>
+#include <linux/types.h>
+
+struct pt_regs;
+asmlinkage int sys_sigreturn(struct pt_regs *regs);
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
+asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
+				     loff_t offset, loff_t len);
+
+struct oldabi_stat64;
+asmlinkage long sys_oabi_stat64(const char __user * filename,
+				struct oldabi_stat64 __user * statbuf);
+asmlinkage long sys_oabi_lstat64(const char __user * filename,
+				 struct oldabi_stat64 __user * statbuf);
+asmlinkage long sys_oabi_fstat64(unsigned long fd,
+				 struct oldabi_stat64 __user * statbuf);
+asmlinkage long sys_oabi_fstatat64(int dfd,
+				   const char __user *filename,
+				   struct oldabi_stat64  __user *statbuf,
+				   int flag);
+asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
+				 unsigned long arg);
+struct oabi_epoll_event;
+asmlinkage long sys_oabi_epoll_ctl(int epfd, int op, int fd,
+				   struct oabi_epoll_event __user *event);
+struct oabi_sembuf;
+struct old_timespec32;
+asmlinkage long sys_oabi_semtimedop(int semid,
+				    struct oabi_sembuf __user *tsops,
+				    unsigned nsops,
+				    const struct old_timespec32 __user *timeout);
+asmlinkage long sys_oabi_semop(int semid, struct oabi_sembuf __user *tsops,
+			       unsigned nsops);
+asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third,
+			    void __user *ptr, long fifth);
+struct sockaddr;
+asmlinkage long sys_oabi_bind(int fd, struct sockaddr __user *addr, int addrlen);
+asmlinkage long sys_oabi_connect(int fd, struct sockaddr __user *addr, int addrlen);
+asmlinkage long sys_oabi_sendto(int fd, void __user *buff,
+				size_t len, unsigned flags,
+				struct sockaddr __user *addr,
+				int addrlen);
+struct user_msghdr;
+asmlinkage long sys_oabi_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
+asmlinkage long sys_oabi_socketcall(int call, unsigned long __user *args);
+
+#endif
diff --git a/arch/arm/include/asm/tcm.h b/arch/arm/include/asm/tcm.h
@@ -9,9 +9,7 @@
 #ifndef __ASMARM_TCM_H
 #define __ASMARM_TCM_H
 
-#ifndef CONFIG_HAVE_TCM
-#error "You should not be including tcm.h unless you have a TCM!"
-#endif
+#ifdef CONFIG_HAVE_TCM
 
 #include <linux/compiler.h>
 
@@ -29,4 +27,11 @@ void tcm_free(void *addr, size_t len);
 bool tcm_dtcm_present(void);
 bool tcm_itcm_present(void);
 
+void __init tcm_init(void);
+#else
+/* No TCM support, just blank inlines to be optimized out */
+static inline void tcm_init(void)
+{
+}
+#endif
 #endif
diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h
@@ -35,4 +35,13 @@ extern void ptrace_break(struct pt_regs *regs);
 
 extern void *vectors_page;
 
+asmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl);
+asmlinkage void do_undefinstr(struct pt_regs *regs);
+asmlinkage void handle_fiq_as_nmi(struct pt_regs *regs);
+asmlinkage void bad_mode(struct pt_regs *regs, int reason);
+asmlinkage int arm_syscall(int no, struct pt_regs *regs);
+asmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs);
+asmlinkage void __div0(void);
+asmlinkage void handle_bad_stack(struct pt_regs *regs);
+
 #endif
diff --git a/arch/arm/include/asm/unwind.h b/arch/arm/include/asm/unwind.h
@@ -40,6 +40,10 @@ extern void unwind_table_del(struct unwind_table *tab);
 extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk,
 			     const char *loglvl);
 
+void __aeabi_unwind_cpp_pr0(void);
+void __aeabi_unwind_cpp_pr1(void);
+void __aeabi_unwind_cpp_pr2(void);
+
 #endif	/* !__ASSEMBLY__ */
 
 #ifdef CONFIG_ARM_UNWIND

diff --git a/arch/arm/include/asm/vdso.h b/arch/arm/include/asm/vdso.h
@@ -24,6 +24,11 @@ static inline void arm_install_vdso(struct mm_struct *mm, unsigned long addr)
 
 #endif /* CONFIG_VDSO */
 
+int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts);
+int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts);
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
+int __vdso_clock_getres(clockid_t clock_id, struct old_timespec32 *res);
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __KERNEL__ */

diff --git a/arch/arm/include/asm/vfp.h b/arch/arm/include/asm/vfp.h
@@ -102,6 +102,7 @@
 
 #ifndef __ASSEMBLY__
 void vfp_disable(void);
+void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs);
 #endif
 
 #endif /* __ASM_VFP_H */
diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c
@@ -127,7 +127,7 @@ static int __init parse_tag_cmdline(const struct tag *tag)
 #elif defined(CONFIG_CMDLINE_FORCE)
 	pr_warn("Ignoring tag cmdline (using the default kernel command line)\n");
 #else
-	strlcpy(default_command_line, tag->u.cmdline.cmdline,
+	strscpy(default_command_line, tag->u.cmdline.cmdline,
 		COMMAND_LINE_SIZE);
 #endif
 	return 0;
@@ -224,7 +224,7 @@ setup_machine_tags(void *atags_vaddr, unsigned int machine_nr)
 	}
 
 	/* parse_early_param needs a boot_command_line */
-	strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
+	strscpy(boot_command_line, from, COMMAND_LINE_SIZE);
 
 	return mdesc;
 }
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
@@ -45,6 +45,7 @@
 #include <asm/cacheflush.h>
 #include <asm/cp15.h>
 #include <asm/fiq.h>
+#include <asm/mach/irq.h>
 #include <asm/irq.h>
 #include <asm/traps.h>
 

diff --git a/arch/arm/kernel/head-inflate-data.c b/arch/arm/kernel/head-inflate-data.c
@@ -8,16 +8,13 @@
 
 #include <linux/init.h>
 #include <linux/zutil.h>
+#include "head.h"
 
 /* for struct inflate_state */
 #include "../../../lib/zlib_inflate/inftrees.h"
 #include "../../../lib/zlib_inflate/inflate.h"
 #include "../../../lib/zlib_inflate/infutil.h"
 
-extern char __data_loc[];
-extern char _edata_loc[];
-extern char _sdata[];
-
 /*
  * This code is called very early during the boot process to decompress
  * the .data segment stored compressed in ROM. Therefore none of the global

diff --git a/arch/arm/kernel/head.h b/arch/arm/kernel/head.h
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+extern char __data_loc[];
+extern char _edata_loc[];
+extern char _sdata[];
+
+int __init __inflate_kernel_data(void);
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
@@ -169,8 +169,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 
 			offset = __mem_to_opcode_arm(*(u32 *)loc);
 			offset = (offset & 0x00ffffff) << 2;
-			if (offset & 0x02000000)
-				offset -= 0x04000000;
+			offset = sign_extend32(offset, 25);
 
 			offset += sym->st_value - loc;
 
@@ -236,7 +235,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 		case R_ARM_MOVT_PREL:
 			offset = tmp = __mem_to_opcode_arm(*(u32 *)loc);
 			offset = ((offset & 0xf0000) >> 4) | (offset & 0xfff);
-			offset = (offset ^ 0x8000) - 0x8000;
+			offset = sign_extend32(offset, 15);
 
 			offset += sym->st_value;
 			if (ELF32_R_TYPE(rel->r_info) == R_ARM_MOVT_PREL ||
@@ -344,8 +343,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 				((~(j2 ^ sign) & 1) << 22) |
 				((upper & 0x03ff) << 12) |
 				((lower & 0x07ff) << 1);
-			if (offset & 0x01000000)
-				offset -= 0x02000000;
+			offset = sign_extend32(offset, 24);
 			offset += sym->st_value - loc;
 
 			/*
@@ -401,7 +399,7 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
 			offset = ((upper & 0x000f) << 12) |
 				((upper & 0x0400) << 1) |
 				((lower & 0x7000) >> 4) | (lower & 0x00ff);
-			offset = (offset ^ 0x8000) - 0x8000;
+			offset = sign_extend32(offset, 15);
 			offset += sym->st_value;
 
 			if (ELF32_R_TYPE(rel->r_info) == R_ARM_THM_MOVT_PREL ||

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
@@ -76,13 +76,6 @@ static int __init fpe_setup(char *line)
 __setup("fpe=", fpe_setup);
 #endif
 
-extern void init_default_cache_policy(unsigned long);
-extern void paging_init(const struct machine_desc *desc);
-extern void early_mm_init(const struct machine_desc *);
-extern void adjust_lowmem_bounds(void);
-extern enum reboot_mode reboot_mode;
-extern void setup_dma_zone(const struct machine_desc *desc);
-
 unsigned int processor_id;
 EXPORT_SYMBOL(processor_id);
 unsigned int __machine_arch_type __read_mostly;
@@ -1142,7 +1135,7 @@ void __init setup_arch(char **cmdline_p)
 	setup_initial_init_mm(_text, _etext, _edata, _end);
 
 	/* populate cmd_line too for later use, preserving boot_command_line */
-	strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
+	strscpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = cmd_line;
 
 	early_fixmap_init();
@@ -1198,10 +1191,6 @@ void __init setup_arch(char **cmdline_p)
 
 	reserve_crashkernel();
 
-#ifdef CONFIG_GENERIC_IRQ_MULTI_HANDLER
-	handle_arch_irq = mdesc->handle_irq;
-#endif
-
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)
 	conswitchp = &vga_con;

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
@@ -18,6 +18,7 @@
 #include <asm/traps.h>
 #include <asm/unistd.h>
 #include <asm/vfp.h>
+#include <asm/syscalls.h>
 
 #include "signal.h"