linux

iv/linux

History

Ard Biesheuvel dfbdcda280 gcc-plugins: arm-ssp: Prepare for THREAD_INFO_IN_TASK support

We will be enabling THREAD_INFO_IN_TASK support for ARM, which means
that we can no longer load the stack canary value by masking the stack
pointer and taking the copy that lives in thread_info. Instead, we will
be able to load it from the task_struct directly, by using the TPIDRURO
register which will hold the current task pointer when
THREAD_INFO_IN_TASK is in effect. This is much more straight-forward,
and allows us to declutter this code a bit while at it.

Note that this means that ARMv6 (non-v6K) SMP systems can no longer use
this feature, but those are quite rare to begin with, so this is a
reasonable trade off.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>

2021-09-27 16:54:01 +02:00

.gitignore

.gitignore: prefix local generated files with a slash

2021-05-02 00:43:35 +09:00

arm_ssp_per_task_plugin.c

gcc-plugins: arm-ssp: Prepare for THREAD_INFO_IN_TASK support

2021-09-27 16:54:01 +02:00

cyc_complexity_plugin.c

gcc-plugins: Replace HTTP links with HTTPS ones

2020-07-13 09:29:09 -07:00

gcc-common.h

gcc-plugins: remove code for GCC versions older than 4.9