diff options
| -rw-r--r-- | arch/arm64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm64/include/asm/syscalls.h | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/unistd.h | 3 | ||||
| -rw-r--r-- | arch/arm64/include/asm/unistd32.h | 4 | ||||
| -rw-r--r-- | arch/arm64/kernel/process.c | 8 | ||||
| -rw-r--r-- | arch/arm64/kernel/sys.c | 11 | ||||
| -rw-r--r-- | arch/arm64/kernel/sys_compat.c | 11 |
7 files changed, 12 insertions, 28 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 20b688c81956..4b03c56ec329 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -33,6 +33,7 @@ config ARM64 select RTC_LIB select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE + select CLONE_BACKWARDS help ARM 64-bit (AArch64) Linux support. diff --git a/arch/arm64/include/asm/syscalls.h b/arch/arm64/include/asm/syscalls.h index a1b00cd6f786..010ec127dc5b 100644 --- a/arch/arm64/include/asm/syscalls.h +++ b/arch/arm64/include/asm/syscalls.h @@ -31,6 +31,8 @@ asmlinkage long sys_sigaltstack_wrapper(const stack_t __user *uss, * AArch64 sys_clone implementation has a different prototype than the generic * one (additional TLS value argument). */ +asmlinkage long sys_clone(unsigned long, unsigned long, void __user *, int, + void __user *); #define sys_clone sys_clone #include <asm-generic/syscalls.h> diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index 43064a8bd99e..d69aeea6da1e 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -24,6 +24,9 @@ #define __ARCH_WANT_SYS_SIGPROCMASK #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND #define __ARCH_WANT_COMPAT_SYS_SENDFILE +#define __ARCH_WANT_SYS_FORK +#define __ARCH_WANT_SYS_VFORK #endif #define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_SYS_CLONE #include <uapi/asm/unistd.h> diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index d9850cf9870d..30127cb11ade 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -23,7 +23,7 @@ __SYSCALL(0, sys_restart_syscall) __SYSCALL(1, sys_exit) -__SYSCALL(2, compat_sys_fork) +__SYSCALL(2, sys_fork) __SYSCALL(3, sys_read) __SYSCALL(4, sys_write) __SYSCALL(5, compat_sys_open) @@ -211,7 +211,7 @@ __SYSCALL(186, compat_sys_sigaltstack_wrapper) __SYSCALL(187, compat_sys_sendfile) __SYSCALL(188, sys_ni_syscall) /* 188 reserved */ __SYSCALL(189, sys_ni_syscall) /* 189 reserved */ -__SYSCALL(190, compat_sys_vfork) +__SYSCALL(190, sys_vfork) __SYSCALL(191, compat_sys_getrlimit) /* SuS compliant getrlimit */ __SYSCALL(192, sys_mmap_pgoff) __SYSCALL(193, compat_sys_truncate64_wrapper) diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 8a5f3341861e..5a1335caf6f1 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -235,15 +235,15 @@ asmlinkage void ret_from_fork(void) asm("ret_from_fork"); int copy_thread(unsigned long clone_flags, unsigned long stack_start, unsigned long stk_sz, struct task_struct *p, - struct pt_regs *regs) + struct pt_regs *unused) { struct pt_regs *childregs = task_pt_regs(p); unsigned long tls = p->thread.tp_value; memset(&p->thread.cpu_context, 0, sizeof(struct cpu_context)); - if (likely(regs)) { - *childregs = *regs; + if (likely(!(p->flags & PF_KTHREAD))) { + *childregs = *current_pt_regs(); childregs->regs[0] = 0; if (is_compat_thread(task_thread_info(p))) { if (stack_start) @@ -266,7 +266,7 @@ int copy_thread(unsigned long clone_flags, unsigned long stack_start, * for the new thread. */ if (clone_flags & CLONE_SETTLS) - tls = regs->regs[3]; + tls = childregs->regs[3]; } else { memset(childregs, 0, sizeof(struct pt_regs)); childregs->pstate = PSR_MODE_EL1h; diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index 4364df85050e..8292a9b090f8 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -26,17 +26,6 @@ #include <linux/slab.h> #include <linux/syscalls.h> -/* - * Clone a task - this clones the calling program thread. - */ -asmlinkage long sys_clone(unsigned long clone_flags, unsigned long newsp, - int __user *parent_tidptr, unsigned long tls_val, - int __user *child_tidptr) -{ - return do_fork(clone_flags, newsp, current_pt_regs(), 0, - parent_tidptr, child_tidptr); -} - asmlinkage long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, off_t off) diff --git a/arch/arm64/kernel/sys_compat.c b/arch/arm64/kernel/sys_compat.c index 6fabc1912da0..f7b05edf8ce3 100644 --- a/arch/arm64/kernel/sys_compat.c +++ b/arch/arm64/kernel/sys_compat.c @@ -28,17 +28,6 @@ #include <asm/cacheflush.h> #include <asm/unistd32.h> -asmlinkage int compat_sys_fork(void) -{ - return do_fork(SIGCHLD, 0, current_pt_regs(), 0, NULL, NULL); -} - -asmlinkage int compat_sys_vfork(void) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0, - current_pt_regs(), 0, NULL, NULL); -} - asmlinkage int compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) { |