From: Amanieu d'Antras Date: Thu, 2 Jan 2020 17:24:10 +0000 (+0100) Subject: parisc: Implement copy_thread_tls X-Git-Tag: v5.10.7~3516^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d2f36c787b2181561d8b95814f8cdad64b348ad7;p=platform%2Fkernel%2Flinux-rpi.git parisc: Implement copy_thread_tls This is required for clone3 which passes the TLS value through a struct rather than a register. Signed-off-by: Amanieu d'Antras Cc: linux-parisc@vger.kernel.org Cc: # 5.3.x Link: https://lore.kernel.org/r/20200102172413.654385-5-amanieu@gmail.com Signed-off-by: Christian Brauner --- diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index b16237c..0c29d6c 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -62,6 +62,7 @@ config PARISC select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE select HAVE_KPROBES_ON_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS + select HAVE_COPY_THREAD_TLS help The PA-RISC microprocessor is designed by Hewlett-Packard and used diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index ecc5c27..230a642 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -208,8 +208,8 @@ arch_initcall(parisc_idle_init); * Copy architecture-specific thread state */ int -copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long kthread_arg, struct task_struct *p) +copy_thread_tls(unsigned long clone_flags, unsigned long usp, + unsigned long kthread_arg, struct task_struct *p, unsigned long tls) { struct pt_regs *cregs = &(p->thread.regs); void *stack = task_stack_page(p); @@ -254,9 +254,9 @@ copy_thread(unsigned long clone_flags, unsigned long usp, cregs->ksp = (unsigned long)stack + THREAD_SZ_ALGN + FRAME_SIZE; cregs->kpc = (unsigned long) &child_return; - /* Setup thread TLS area from the 4th parameter in clone */ + /* Setup thread TLS area */ if (clone_flags & CLONE_SETTLS) - cregs->cr27 = cregs->gr[23]; + cregs->cr27 = tls; } return 0;