diff options
| author | Gregory Price <gourry@gourry.net> | 2026-07-06 10:00:18 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-07-08 10:22:00 +0200 |
| commit | ee935e8dc757614006ac29a7d98a15882cdcaeb2 (patch) | |
| tree | 206ddf08c8b28e1bac9fe9dc0d634dbfe7ec515d /include/linux/syscall_user_dispatch.h | |
| parent | 8cdeaa50eae8dad34885515f62559ee83e7e8dda (diff) | |
syscall_user_dispatch: Make it configurable in Kconfig
Syscall User Dispatch is presently built under CONFIG_GENERIC_SYSCALL and
cannot be disabled independently.
Add CONFIG_SYSCALL_USER_DISPATCH to make it an optional feature.
Signed-off-by: Gregory Price <gourry@gourry.net>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260706140020.873735-2-gourry@gourry.net
Diffstat (limited to 'include/linux/syscall_user_dispatch.h')
| -rw-r--r-- | include/linux/syscall_user_dispatch.h | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/include/linux/syscall_user_dispatch.h b/include/linux/syscall_user_dispatch.h index 3858a6ffdd5c..3dd30f4b2799 100644 --- a/include/linux/syscall_user_dispatch.h +++ b/include/linux/syscall_user_dispatch.h @@ -6,9 +6,23 @@ #define _SYSCALL_USER_DISPATCH_H #include <linux/thread_info.h> +#include <linux/sched.h> #include <linux/syscall_user_dispatch_types.h> -#ifdef CONFIG_GENERIC_ENTRY +struct pt_regs; + +#ifdef CONFIG_SYSCALL_USER_DISPATCH + +bool syscall_user_dispatch(struct pt_regs *regs); + +static __always_inline bool syscall_user_dispatch_clear_on_dispatch(void) +{ + if (likely(!current->syscall_dispatch.on_dispatch)) + return false; + + current->syscall_dispatch.on_dispatch = false; + return true; +} int set_syscall_user_dispatch(unsigned long mode, unsigned long offset, unsigned long len, char __user *selector); @@ -24,6 +38,16 @@ int syscall_user_dispatch_set_config(struct task_struct *task, unsigned long siz #else +static __always_inline bool syscall_user_dispatch(struct pt_regs *regs) +{ + return false; +} + +static __always_inline bool syscall_user_dispatch_clear_on_dispatch(void) +{ + return false; +} + static inline int set_syscall_user_dispatch(unsigned long mode, unsigned long offset, unsigned long len, char __user *selector) { @@ -46,6 +70,6 @@ static inline int syscall_user_dispatch_set_config(struct task_struct *task, return -EINVAL; } -#endif /* CONFIG_GENERIC_ENTRY */ +#endif /* CONFIG_SYSCALL_USER_DISPATCH */ #endif /* _SYSCALL_USER_DISPATCH_H */ |