On 9/7/26 04:46, Jinjie Ruan wrote:
On 7/8/2026 3:06 AM, Thomas Gleixner wrote:
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 <[email protected]>
Cc: Sven Schnelle <[email protected]>
Cc: [email protected]
---
arch/s390/kernel/syscall.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/s390/kernel/syscall.c
+++ b/arch/s390/kernel/syscall.c
@@ -97,8 +97,8 @@ void noinstr __do_syscall(struct pt_regs
{
unsigned long nr;
- enter_from_user_mode(regs);
- add_random_kstack_offset();
+ enter_from_user_mode_randomize_stack(regs);
The #include <linux/randomize_kstack.h> can be removed.
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
