Wire up the clone6() call on x86.

This patch only wires up clone6() on x86. Some of the arches look like they
need special assembly massaging and it is probably smarter if the
appropriate arch maintainers would do the actual wiring.

Signed-off-by: Christian Brauner <christ...@brauner.io>
Cc: Arnd Bergmann <a...@arndb.de>
Cc: David Howells <dhowe...@redhat.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Oleg Nesterov <o...@redhat.com>
Cc: Adrian Reber <adr...@lisas.de>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Al Viro <v...@zeniv.linux.org.uk>
Cc: Florian Weimer <fwei...@redhat.com>
Cc: linux-...@vger.kernel.org
Cc: linux-a...@vger.kernel.org
Cc: x...@kernel.org
---
 arch/x86/entry/syscalls/syscall_32.tbl | 1 +
 arch/x86/entry/syscalls/syscall_64.tbl | 1 +
 include/uapi/asm-generic/unistd.h      | 4 +++-
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/x86/entry/syscalls/syscall_32.tbl 
b/arch/x86/entry/syscalls/syscall_32.tbl
index ad968b7bac72..dffcd57990b3 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -438,3 +438,4 @@
 431    i386    fsconfig                sys_fsconfig                    
__ia32_sys_fsconfig
 432    i386    fsmount                 sys_fsmount                     
__ia32_sys_fsmount
 433    i386    fspick                  sys_fspick                      
__ia32_sys_fspick
+436    i386    clone6                  sys_clone6                      
__ia32_sys_clone6
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl 
b/arch/x86/entry/syscalls/syscall_64.tbl
index b4e6f9e6204a..73bf4cc099a2 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -355,6 +355,7 @@
 431    common  fsconfig                __x64_sys_fsconfig
 432    common  fsmount                 __x64_sys_fsmount
 433    common  fspick                  __x64_sys_fspick
+436    common  clone6                  __x64_sys_clone6/ptregs
 
 #
 # x32-specific system call numbers start at 512 to avoid cache impact
diff --git a/include/uapi/asm-generic/unistd.h 
b/include/uapi/asm-generic/unistd.h
index a87904daf103..500bdb4c5e36 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -844,9 +844,11 @@ __SYSCALL(__NR_fsconfig, sys_fsconfig)
 __SYSCALL(__NR_fsmount, sys_fsmount)
 #define __NR_fspick 433
 __SYSCALL(__NR_fspick, sys_fspick)
+#define __NR_clone6 436
+__SYSCALL(__NR_clone6, sys_clone6)
 
 #undef __NR_syscalls
-#define __NR_syscalls 434
+#define __NR_syscalls 437
 
 /*
  * 32 bit systems traditionally used different
-- 
2.21.0

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