Hi all, Here's a series of cleanups I hacked together on top of a modified v13 of the Shadow Call Stack patches from Sami:
https://lore.kernel.org/r/20200515172355.GD23334@willie-the-truck The main changes are: * Move code out of arch/arm64 and into the core implementation * Store the full SCS stack pointer instead of the offset * Code simplification and general style things I'd like to queue this on top early next week so that it can spend some quality time in linux-next. Cheers, Will Cc: Sami Tolvanen <[email protected]> Cc: Kees Cook <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Jann Horn <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: <[email protected]> --->8 Will Deacon (6): arm64: scs: Store absolute SCS stack pointer value in thread_info scs: Move accounting into alloc/free functions arm64: scs: Use 'scs_sp' register alias for x18 scs: Move scs_overflow_check() out of architecture code scs: Remove references to asm/scs.h from core code scs: Move DEFINE_SCS macro into core code arch/Kconfig | 4 +-- arch/arm64/include/asm/scs.h | 29 ++++------------ arch/arm64/include/asm/thread_info.h | 4 +-- arch/arm64/kernel/asm-offsets.c | 2 +- arch/arm64/kernel/entry.S | 10 +++--- arch/arm64/kernel/head.S | 2 +- arch/arm64/kernel/process.c | 2 -- arch/arm64/kernel/scs.c | 6 +--- include/linux/scs.h | 16 +++++---- kernel/sched/core.c | 3 ++ kernel/scs.c | 52 +++++++++++++--------------- 11 files changed, 55 insertions(+), 75 deletions(-) -- 2.26.2.761.g0e0b3e54be-goog
