x86/entry/64: Call all native slow-path syscalls with full pt-regs

This removes all of the remaining asm syscall stubs except for
stub_ptregs_64.  Entries in the main syscall table are now all
callable from C.

The resulting asm is every bit as ridiculous as it looks.  The
next few patches will clean it up.  This patch is here to let
reviewers rest their brains and for bisection.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/a6b3801be0d505d50aefabda02d3b93efbfc9c73.1454022279.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index 5de342a729d0..dcf107ce2cd4 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -21,7 +21,7 @@
 12      common  brk                     sys_brk
 13      64      rt_sigaction            sys_rt_sigaction
 14      common  rt_sigprocmask          sys_rt_sigprocmask
-15      64      rt_sigreturn            stub_rt_sigreturn/ptregs
+15      64      rt_sigreturn            sys_rt_sigreturn/ptregs
 16      64      ioctl                   sys_ioctl
 17      common  pread64                 sys_pread64
 18      common  pwrite64                sys_pwrite64
@@ -62,10 +62,10 @@
 53      common  socketpair              sys_socketpair
 54      64      setsockopt              sys_setsockopt
 55      64      getsockopt              sys_getsockopt
-56      common  clone                   stub_clone/ptregs
-57      common  fork                    stub_fork/ptregs
-58      common  vfork                   stub_vfork/ptregs
-59      64      execve                  stub_execve/ptregs
+56      common  clone                   sys_clone/ptregs
+57      common  fork                    sys_fork/ptregs
+58      common  vfork                   sys_vfork/ptregs
+59      64      execve                  sys_execve/ptregs
 60      common  exit                    sys_exit
 61      common  wait4                   sys_wait4
 62      common  kill                    sys_kill
@@ -328,7 +328,7 @@
 319     common  memfd_create            sys_memfd_create
 320     common  kexec_file_load         sys_kexec_file_load
 321     common  bpf                     sys_bpf
-322     64      execveat                stub_execveat/ptregs
+322     64      execveat                sys_execveat/ptregs
 323     common  userfaultfd             sys_userfaultfd
 324     common  membarrier              sys_membarrier
 325     common  mlock2                  sys_mlock2
@@ -339,14 +339,14 @@
 # for native 64-bit operation.
 #
 512     x32     rt_sigaction            compat_sys_rt_sigaction
-513     x32     rt_sigreturn            stub_x32_rt_sigreturn
+513     x32     rt_sigreturn            sys32_x32_rt_sigreturn
 514     x32     ioctl                   compat_sys_ioctl
 515     x32     readv                   compat_sys_readv
 516     x32     writev                  compat_sys_writev
 517     x32     recvfrom                compat_sys_recvfrom
 518     x32     sendmsg                 compat_sys_sendmsg
 519     x32     recvmsg                 compat_sys_recvmsg
-520     x32     execve                  stub_x32_execve/ptregs
+520     x32     execve                  compat_sys_execve/ptregs
 521     x32     ptrace                  compat_sys_ptrace
 522     x32     rt_sigpending           compat_sys_rt_sigpending
 523     x32     rt_sigtimedwait         compat_sys_rt_sigtimedwait
@@ -371,4 +371,4 @@
 542     x32     getsockopt              compat_sys_getsockopt
 543     x32     io_setup                compat_sys_io_setup
 544     x32     io_submit               compat_sys_io_submit
-545     x32     execveat                stub_x32_execveat/ptregs
+545     x32     execveat                compat_sys_execveat/ptregs