From 7694f5143bbe2e2d08216eaee7c62c9d39252889 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Tue, 12 May 2020 19:15:27 +0200 Subject: sparc: unconditionally enable HAVE_COPY_THREAD_TLS Now that both sparc and sparc64 support copy_thread_tls() and don't rely on do_fork() anymore, turn on HAVE_COPY_THREAD_TLS unconditionally. Once all architectures are switched over this macro will be removed and the old do_fork() calling convention fully abandoned in favor of the cleaner struct kernel_clone_args one. Signed-off-by: Christian Brauner Acked-by: David S. Miller Cc: Arnd Bergmann Cc: "David S. Miller" Cc: Guo Ren Cc: linux-csky@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: sparclinux@vger.kernel.org Link: https://lore.kernel.org/r/20200512171527.570109-4-christian.brauner@ubuntu.com --- arch/sparc/Kconfig | 2 +- arch/sparc/kernel/process_32.c | 7 ++++--- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index e2bb4956e130..66213c0cb557 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -48,6 +48,7 @@ config SPARC select LOCKDEP_SMALL if LOCKDEP select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH + select HAVE_COPY_THREAD_TLS config SPARC32 def_bool !64BIT @@ -94,7 +95,6 @@ config SPARC64 select ARCH_HAS_PTE_SPECIAL select PCI_DOMAINS if PCI select ARCH_HAS_GIGANTIC_PAGE - select HAVE_COPY_THREAD_TLS config ARCH_PROC_KCORE_TEXT def_bool y diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 229a10bab74a..3e1f7b639e9a 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -273,8 +273,9 @@ clone_stackframe(struct sparc_stackf __user *dst, extern void ret_from_fork(void); extern void ret_from_kernel_thread(void); -int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long arg, struct task_struct *p) +int copy_thread_tls(unsigned long clone_flags, unsigned long sp, + unsigned long arg, struct task_struct *p, + unsigned long tls) { struct thread_info *ti = task_thread_info(p); struct pt_regs *childregs, *regs = current_pt_regs(); @@ -376,7 +377,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, regs->u_regs[UREG_I1] = 0; if (clone_flags & CLONE_SETTLS) - childregs->u_regs[UREG_G7] = regs->u_regs[UREG_I3]; + childregs->u_regs[UREG_G7] = tls; return 0; } -- cgit v1.2.3