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| author | Christian Brauner <christian.brauner@ubuntu.com> | 2020-05-12 19:15:27 +0200 |
|---|---|---|
| committer | Christian Brauner <christian.brauner@ubuntu.com> | 2020-06-23 10:49:56 +0200 |
| commit | 7694f5143bbe2e2d08216eaee7c62c9d39252889 (patch) | |
| tree | 1f6727d82774c137ccb6d5de6d48a104cf5491cc /arch | |
| parent | sparc: share process creation helpers between sparc and sparc64 (diff) | |
| download | linux-7694f5143bbe2e2d08216eaee7c62c9d39252889.tar.xz linux-7694f5143bbe2e2d08216eaee7c62c9d39252889.zip | |
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 <christian.brauner@ubuntu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guo Ren <guoren@kernel.org>
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
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/Kconfig | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/process_32.c | 7 |
2 files changed, 5 insertions, 4 deletions
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; } |