Messages in this thread Patch in this message | | | From | Christian Brauner <> | Subject | [PATCH 14/17] sh: switch to copy_thread_tls() | Date | Tue, 23 Jun 2020 01:43:23 +0200 |
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Use the copy_thread_tls() calling convention which passes tls through a register. This is required so we can remove the copy_thread{_tls}() split and remove the HAVE_COPY_THREAD_TLS macro.
Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: linux-sh@vger.kernel.org Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> --- arch/sh/Kconfig | 1 + arch/sh/kernel/process_32.c | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 9fc2b010e938..e10118d61ce7 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -70,6 +70,7 @@ config SUPERH select ARCH_HIBERNATION_POSSIBLE if MMU select SPARSE_IRQ select HAVE_STACKPROTECTOR + select HAVE_COPY_THREAD_TLS help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c index 456cc8d171f7..537a82d80616 100644 --- a/arch/sh/kernel/process_32.c +++ b/arch/sh/kernel/process_32.c @@ -115,8 +115,8 @@ EXPORT_SYMBOL(dump_fpu); asmlinkage void ret_from_fork(void); asmlinkage void ret_from_kernel_thread(void); -int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p) +int copy_thread_tls(unsigned long clone_flags, unsigned long usp, + unsigned long arg, struct task_struct *p, unsigned long tls) { struct thread_info *ti = task_thread_info(p); struct pt_regs *childregs; @@ -158,7 +158,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, ti->addr_limit = USER_DS; if (clone_flags & CLONE_SETTLS) - childregs->gbr = childregs->regs[0]; + childregs->gbr = tls; childregs->regs[0] = 0; /* Set return value for child */ p->thread.pc = (unsigned long) ret_from_fork; -- 2.27.0
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