From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
aneesh.kumar@linux.vnet.ibm.com, npiggin@gmail.com
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [RFC PATCH v1 0/9] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK
Date: Mon, 24 Sep 2018 15:52:19 +0000 (UTC) [thread overview]
Message-ID: <cover.1537802981.git.christophe.leroy@c-s.fr> (raw)
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
next reply other threads:[~2018-09-24 15:55 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-24 15:52 Christophe Leroy [this message]
2018-09-24 15:52 ` [RFC PATCH v1 1/9] timer: fix circular header dependency Christophe Leroy
2018-09-25 5:34 ` Christophe LEROY
2018-09-25 6:33 ` Christophe LEROY
2018-09-25 12:11 ` Mark Rutland
2018-09-25 12:15 ` Christophe LEROY
2018-09-25 17:48 ` Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 2/9] book3s/64: avoid circular header inclusion in mmu-hash.h Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 3/9] powerpc: change name THREAD_INFO to TASK_STACK Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 4/9] powerpc: Prepare for moving thread_info into task_struct Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 5/9] powerpc: Activate CONFIG_THREAD_INFO_IN_TASK Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 6/9] powerpc: regain entire stack space Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 7/9] powerpc: 'current_set' is now a table of task_struct pointers Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 8/9] powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU Christophe Leroy
2018-09-24 15:52 ` [RFC PATCH v1 9/9] powerpc/64: Modify CURRENT_THREAD_INFO() Christophe Leroy
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