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| author | Christian Brauner <christian.brauner@ubuntu.com> | 2020-05-24 23:34:20 +0200 |
|---|---|---|
| committer | Christian Brauner <christian.brauner@ubuntu.com> | 2020-07-04 23:41:37 +0200 |
| commit | 140c8180eb7c7cbda399f64474788b86db72db32 (patch) | |
| tree | 74ce31c8e2e7f9ca154fb5e37dd1971adc43bfc8 /kernel/fork.c | |
| parent | unicore: switch to copy_thread_tls() (diff) | |
| download | linux-140c8180eb7c7cbda399f64474788b86db72db32.tar.xz linux-140c8180eb7c7cbda399f64474788b86db72db32.zip | |
arch: remove HAVE_COPY_THREAD_TLS
All architectures support copy_thread_tls() now, so remove the legacy
copy_thread() function and the HAVE_COPY_THREAD_TLS config option. Everyone
uses the same process creation calling convention based on
copy_thread_tls() and struct kernel_clone_args. This will make it easier to
maintain the core process creation code under kernel/, simplifies the
callpaths and makes the identical for all architectures.
Cc: linux-arch@vger.kernel.org
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: Greentime Hu <green.hu@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 0fd7eb1b38f9..8e52e16a1b5e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2577,15 +2577,6 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp, #ifdef __ARCH_WANT_SYS_CLONE3 -/* - * copy_thread implementations handle CLONE_SETTLS by reading the TLS value from - * the registers containing the syscall arguments for clone. This doesn't work - * with clone3 since the TLS value is passed in clone_args instead. - */ -#ifndef CONFIG_HAVE_COPY_THREAD_TLS -#error clone3 requires copy_thread_tls support in arch -#endif - noinline static int copy_clone_args_from_user(struct kernel_clone_args *kargs, struct clone_args __user *uargs, size_t usize) |