Loading arch/mips/Kconfig +17 −0 Original line number Diff line number Diff line Loading @@ -1530,6 +1530,23 @@ config BINFMT_ELF32 bool default y if MIPS32_O32 || MIPS32_N32 config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on PROC_FS && BROKEN default y help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via /proc/<pid>/seccomp, it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. If unsure, say Y. Only embedded should say N here. config PM bool "Power Management support (EXPERIMENTAL)" depends on EXPERIMENTAL && MACH_AU1X00 Loading include/asm-mips/thread_info.h +6 −4 Original line number Diff line number Diff line Loading @@ -114,6 +114,7 @@ register struct thread_info *__current_thread_info __asm__("$28"); #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ #define TIF_SECCOMP 5 /* secure computing */ #define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */ #define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 18 Loading @@ -124,13 +125,14 @@ register struct thread_info *__current_thread_info __asm__("$28"); #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) #define _TIF_SECCOMP (1<<TIF_SECCOMP) #define _TIF_USEDFPU (1<<TIF_USEDFPU) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) #define _TIF_WORK_MASK 0x0000ffef /* work to do on interrupt/exception return */ #define _TIF_ALLWORK_MASK 0x8000ffff /* work to do on any return to u-space */ /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK (0x0000ffef & ~_TIF_SECCOMP) /* work to do on any return to u-space */ #define _TIF_ALLWORK_MASK (0x8000ffff & ~_TIF_SECCOMP) #endif /* __KERNEL__ */ Loading Loading
arch/mips/Kconfig +17 −0 Original line number Diff line number Diff line Loading @@ -1530,6 +1530,23 @@ config BINFMT_ELF32 bool default y if MIPS32_O32 || MIPS32_N32 config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on PROC_FS && BROKEN default y help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via /proc/<pid>/seccomp, it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. If unsure, say Y. Only embedded should say N here. config PM bool "Power Management support (EXPERIMENTAL)" depends on EXPERIMENTAL && MACH_AU1X00 Loading
include/asm-mips/thread_info.h +6 −4 Original line number Diff line number Diff line Loading @@ -114,6 +114,7 @@ register struct thread_info *__current_thread_info __asm__("$28"); #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ #define TIF_SECCOMP 5 /* secure computing */ #define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */ #define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 18 Loading @@ -124,13 +125,14 @@ register struct thread_info *__current_thread_info __asm__("$28"); #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) #define _TIF_SECCOMP (1<<TIF_SECCOMP) #define _TIF_USEDFPU (1<<TIF_USEDFPU) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) #define _TIF_WORK_MASK 0x0000ffef /* work to do on interrupt/exception return */ #define _TIF_ALLWORK_MASK 0x8000ffff /* work to do on any return to u-space */ /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK (0x0000ffef & ~_TIF_SECCOMP) /* work to do on any return to u-space */ #define _TIF_ALLWORK_MASK (0x8000ffff & ~_TIF_SECCOMP) #endif /* __KERNEL__ */ Loading
Ralf Baechle <ralf@linux-mips.org>Ralf Baechle <ralf@linux-mips.org>