diff options
| author | Sven Schnelle <svens@linux.ibm.com> | 2021-01-18 11:35:38 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-01-19 14:29:27 +0300 |
| commit | 3a790cc1c9ef1b7b613cf648e6fb756a842caa16 (patch) | |
| tree | 18fb3bac5d91bb330cfa39e982e74d8e18171f27 /arch/s390/kernel/syscall.c | |
| parent | 39589ada1cab9548325767e6aea43a31132467de (diff) | |
| download | linux-3a790cc1c9ef1b7b613cf648e6fb756a842caa16.tar.xz | |
s390: pass struct pt_regs instead of registers to syscalls
Instead of fetching all registers from struct pt_regs and passing
them to the syscall wrappers, let the system call wrappers only
fetch the values really required.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/syscall.c')
| -rw-r--r-- | arch/s390/kernel/syscall.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/s390/kernel/syscall.c b/arch/s390/kernel/syscall.c index 25c0fb19b0a5..bc8e650e377d 100644 --- a/arch/s390/kernel/syscall.c +++ b/arch/s390/kernel/syscall.c @@ -132,12 +132,8 @@ void do_syscall(struct pt_regs *regs) */ if (!test_pt_regs_flag(regs, PIF_SYSCALL_RET_SET)) { regs->gprs[2] = -ENOSYS; - if (likely(nr < NR_syscalls)) { - regs->gprs[2] = current->thread.sys_call_table[nr]( - regs->orig_gpr2, regs->gprs[3], - regs->gprs[4], regs->gprs[5], - regs->gprs[6], regs->gprs[7]); - } + if (likely(nr < NR_syscalls)) + regs->gprs[2] = current->thread.sys_call_table[nr](regs); } else { clear_pt_regs_flag(regs, PIF_SYSCALL_RET_SET); } |