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| author | Will Deacon <will@kernel.org> | 2020-05-15 18:17:12 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-05-18 19:47:48 +0300 |
| commit | 871e100e432c651c9c46fb9c3184b4577e0de3ae (patch) | |
| tree | 95f57bcb3f5f40aac9f9075e51d5456b21e591f3 /include/linux/scs.h | |
| parent | aa7a65ae5b8f459617e5ed1422301386e7f12274 (diff) | |
| download | linux-871e100e432c651c9c46fb9c3184b4577e0de3ae.tar.xz | |
scs: Move DEFINE_SCS macro into core code
Defining static shadow call stacks is not architecture-specific, so move
the DEFINE_SCS() macro into the core header file.
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'include/linux/scs.h')
| -rw-r--r-- | include/linux/scs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/scs.h b/include/linux/scs.h index 2fd3df50e93e..6dec390cf154 100644 --- a/include/linux/scs.h +++ b/include/linux/scs.h @@ -26,6 +26,10 @@ /* An illegal pointer value to mark the end of the shadow stack. */ #define SCS_END_MAGIC (0x5f6UL + POISON_POINTER_DELTA) +/* Allocate a static per-CPU shadow stack */ +#define DEFINE_SCS(name) \ + DEFINE_PER_CPU(unsigned long [SCS_SIZE/sizeof(long)], name) \ + #define task_scs(tsk) (task_thread_info(tsk)->scs_base) #define task_scs_sp(tsk) (task_thread_info(tsk)->scs_sp) |