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 v2 0/9] powerpc: Switch to CONFIG_THREAD_INFO_IN_TASK
Date: Tue, 25 Sep 2018 12:10:35 +0000 (UTC) [thread overview]
Message-ID: <cover.1537877134.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.
Changes since v1:
- Removed the first patch which was modifying header inclusion order in timer
- Modified some names in asm-offsets to avoid conflicts when including asm-offsets in C files
- Modified asm/smp.h to avoid having to include linux/sched.h (using asm-offsets instead)
- Moved some changes from the activation patch to the preparation patch.
Christophe Leroy (9):
book3s/64: avoid circular header inclusion in mmu-hash.h
powerpc: change name THREAD_INFO to TASK_STACK
powerpc: clear redundancies in asm-offset.c
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/mmu-44x.h | 8 +--
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 | 14 +++-
arch/powerpc/include/asm/task_size.h | 42 ++++++++++++
arch/powerpc/include/asm/thread_info.h | 17 +----
arch/powerpc/kernel/asm-offsets.c | 37 ++++++-----
arch/powerpc/kernel/entry_32.S | 88 ++++++++++----------------
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 | 16 ++---
arch/powerpc/kernel/head_40x.S | 6 +-
arch/powerpc/kernel/head_44x.S | 10 +--
arch/powerpc/kernel/head_64.S | 3 +-
arch/powerpc/kernel/head_8xx.S | 4 +-
arch/powerpc/kernel/head_booke.h | 12 +---
arch/powerpc/kernel/head_fsl_booke.S | 18 +++---
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/kernel/vdso32/gettimeofday.S | 4 +-
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 +-
45 files changed, 243 insertions(+), 380 deletions(-)
create mode 100644 arch/powerpc/include/asm/task_size.h
--
2.13.3
next reply other threads:[~2018-09-25 12:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 12:10 Christophe Leroy [this message]
2018-09-25 12:10 ` [RFC PATCH v2 1/9] book3s/64: avoid circular header inclusion in mmu-hash.h Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 2/9] powerpc: change name THREAD_INFO to TASK_STACK Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 3/9] powerpc: clear redundancies in asm-offset.c Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 4/9] powerpc: Prepare for moving thread_info into task_struct Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 5/9] powerpc: Activate CONFIG_THREAD_INFO_IN_TASK Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 6/9] powerpc: regain entire stack space Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 7/9] powerpc: 'current_set' is now a table of task_struct pointers Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 8/9] powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU Christophe Leroy
2018-09-25 12:10 ` [RFC PATCH v2 9/9] powerpc/64: Modify CURRENT_THREAD_INFO() Christophe Leroy
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