The purpose of this serie is to activate CONFIG_THREAD_INFO_IN_TASK which moves the thread_info into task_struct.
Moving thread_info into task_struct has the following advantages: - It protects thread_info from corruption in the case of stack overflows. - Its address is harder to determine if stack addresses are leaked, making a number of attacks more difficult. Christophe Leroy (9): timer: fix circular header dependency book3s/64: avoid circular header inclusion in mmu-hash.h powerpc: change name THREAD_INFO to TASK_STACK powerpc: Prepare for moving thread_info into task_struct powerpc: Activate CONFIG_THREAD_INFO_IN_TASK powerpc: regain entire stack space powerpc: 'current_set' is now a table of task_struct pointers powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU powerpc/64: Modify CURRENT_THREAD_INFO() arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/asm-prototypes.h | 4 +- arch/powerpc/include/asm/book3s/64/mmu-hash.h | 2 +- arch/powerpc/include/asm/exception-64s.h | 4 +- arch/powerpc/include/asm/irq.h | 14 +++--- arch/powerpc/include/asm/livepatch.h | 2 +- arch/powerpc/include/asm/processor.h | 39 ++------------- arch/powerpc/include/asm/ptrace.h | 2 +- arch/powerpc/include/asm/reg.h | 2 +- arch/powerpc/include/asm/smp.h | 3 +- arch/powerpc/include/asm/task_size.h | 42 ++++++++++++++++ arch/powerpc/include/asm/thread_info.h | 17 +------ arch/powerpc/kernel/asm-offsets.c | 8 ++-- arch/powerpc/kernel/entry_32.S | 66 +++++++++----------------- arch/powerpc/kernel/entry_64.S | 12 ++--- arch/powerpc/kernel/epapr_hcalls.S | 5 +- arch/powerpc/kernel/exceptions-64e.S | 13 +---- arch/powerpc/kernel/exceptions-64s.S | 2 +- arch/powerpc/kernel/head_32.S | 14 +++--- arch/powerpc/kernel/head_40x.S | 4 +- arch/powerpc/kernel/head_44x.S | 8 ++-- arch/powerpc/kernel/head_64.S | 1 + arch/powerpc/kernel/head_8xx.S | 2 +- arch/powerpc/kernel/head_booke.h | 12 ++--- arch/powerpc/kernel/head_fsl_booke.S | 16 +++---- arch/powerpc/kernel/idle_6xx.S | 8 ++-- arch/powerpc/kernel/idle_book3e.S | 2 +- arch/powerpc/kernel/idle_e500.S | 8 ++-- arch/powerpc/kernel/idle_power4.S | 2 +- arch/powerpc/kernel/irq.c | 66 ++++---------------------- arch/powerpc/kernel/kgdb.c | 28 ----------- arch/powerpc/kernel/machine_kexec_64.c | 6 +-- arch/powerpc/kernel/misc_32.S | 17 +++---- arch/powerpc/kernel/process.c | 15 +++--- arch/powerpc/kernel/setup-common.c | 2 +- arch/powerpc/kernel/setup_32.c | 15 ++---- arch/powerpc/kernel/setup_64.c | 29 ++--------- arch/powerpc/kernel/smp.c | 16 +++---- arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 6 +-- arch/powerpc/kvm/book3s_hv_hmi.c | 1 + arch/powerpc/mm/hash_low_32.S | 14 ++---- arch/powerpc/sysdev/6xx-suspend.S | 5 +- arch/powerpc/xmon/xmon.c | 2 +- fs/timerfd.c | 2 +- kernel/time/alarmtimer.c | 2 +- 45 files changed, 194 insertions(+), 347 deletions(-) create mode 100644 arch/powerpc/include/asm/task_size.h -- 2.13.3
