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| author | Thomas Gleixner <tglx@kernel.org> | 2026-07-07 21:06:23 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-07-12 12:38:01 +0200 |
| commit | 05a194d8bd005e0887a1e089bbbbd2e1a641638f (patch) | |
| tree | a05ea54334383f5cbe67ea3ecb0499c5e6ec607a | |
| parent | d023abfbc4dca9ad9c9928b5b5a38b1628ee1a5d (diff) | |
| download | linux-05a194d8bd005e0887a1e089bbbbd2e1a641638f.tar.gz linux-05a194d8bd005e0887a1e089bbbbd2e1a641638f.zip | |
s390/syscall: Use enter_from_user_mode_randomize_stack()
enter_from_user_mode_randomize_stack() replaces enter_from_user_mode() and
the subsequent invocation of add_random_kstack_offset_irqsoff().
As a bonus this avoids the overhead of get/put_cpu_var() in
add_random_kstack_offset().
No functional change.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Radu Rendec <radu@rendec.net>
Reviewed-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Link: https://patch.msgid.link/20260707190254.030598804@kernel.org
| -rw-r--r-- | arch/s390/kernel/syscall.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/syscall.c b/arch/s390/kernel/syscall.c index 75d5a3cab14e..73abda2a9080 100644 --- a/arch/s390/kernel/syscall.c +++ b/arch/s390/kernel/syscall.c @@ -97,8 +97,8 @@ void noinstr __do_syscall(struct pt_regs *regs, int per_trap) { unsigned long nr; - enter_from_user_mode(regs); - add_random_kstack_offset(); + enter_from_user_mode_randomize_stack(regs); + regs->psw = get_lowcore()->svc_old_psw; regs->int_code = get_lowcore()->svc_int_code; update_timer_sys(); |