mirror of
https://github.com/torvalds/linux
synced 2024-10-05 02:44:13 +00:00
142781e108
On syscall entry certain work needs to be done: - Establish state (lockdep, context tracking, tracing) - Conditional work (ptrace, seccomp, audit...) This code is needlessly duplicated and different in all architectures. Provide a generic version based on the x86 implementation which has all the RCU and instrumentation bits right. As interrupt/exception entry from user space needs parts of the same functionality, provide a function for this as well. syscall_enter_from_user_mode() and irqentry_enter_from_user_mode() must be called right after the low level ASM entry. The calling code must be non-instrumentable. After the functions returns state is correct and the subsequent functions can be instrumented. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Kees Cook <keescook@chromium.org> Link: https://lkml.kernel.org/r/20200722220519.513463269@linutronix.de
13 lines
389 B
Makefile
13 lines
389 B
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
# Prevent the noinstr section from being pestered by sanitizer and other goodies
|
|
# as long as these things cannot be disabled per function.
|
|
KASAN_SANITIZE := n
|
|
UBSAN_SANITIZE := n
|
|
KCOV_INSTRUMENT := n
|
|
|
|
CFLAGS_REMOVE_common.o = -fstack-protector -fstack-protector-strong
|
|
CFLAGS_common.o += -fno-stack-protector
|
|
|
|
obj-$(CONFIG_GENERIC_ENTRY) += common.o
|