Files
linux/arch/arm/include/asm
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
..
2020-10-30 21:57:05 +01:00
2020-05-07 00:41:47 +02:00
2021-05-07 00:26:34 -07:00
2018-05-19 11:53:46 +01:00
2020-07-30 13:01:04 -07:00
2021-07-01 11:06:03 -07:00
2021-03-22 02:45:52 +01:00
2020-10-13 18:38:31 -07:00
2020-06-09 09:39:10 -07:00
2020-06-09 09:39:10 -07:00