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>,
Nicholas Piggin <npiggin@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH v1 00/16] powerpc/32: Implement fast syscall entry
Date: Fri, 8 Feb 2019 12:52:16 +0000 (UTC) [thread overview]
Message-ID: <cover.1549630193.git.christophe.leroy@c-s.fr> (raw)
The purpose of this series is to implement a fast syscall entry
on ppc32.
Unlike all other exceptions which can happen at any time and
require to preserve all registers, the syscalls do not
require the preservation of volatile registers (except LR).
Syscall entries can then be optimised with lighter entry code
than the general exception handling.
In the meantime this series refactorises the exception entry on
40x/6xx/8xx as they are pretty similar, and it takes benh series
on rationalise the settings of MSR_EE at exceptions/syscall entries
as this change pretty simplies exception entries.
On a 8xx, this series improves null_syscall selftest by 17%
On a 83xx, this series improves null_syscall selftest by 12,5%
Christophe Leroy (16):
powerpc: CONFIG_THREAD_INFO_IN_TASK series
powerpc/32: Refactor EXCEPTION entry macros for head_8xx.S and
head_32.S
powerpc/32: move LOAD_MSR_KERNEL() into head_32.h and use it
powerpc/32: make the 6xx/8xx EXC_XFER_TEMPLATE() similar to the
40x/booke one
powerpc/40x: Don't use SPRN_SPRG_SCRATCH2 in EXCEPTION_PROLOG
powerpc/40x: add exception frame marker
powerpc/40x: Split and rename NORMAL_EXCEPTION_PROLOG
powerpc/40x: Refactor exception entry macros by using head_32.h
powerpc/fsl_booke: ensure SPEFloatingPointException() reenables
interrupts
powerpc/32: enter syscall with MSR_EE inconditionaly set
powerpc/32: Enter exceptions with MSR_EE unset
powerpc/32: get rid of COPY_EE in exception entry
powerpc: Fix 32-bit handling of MSR_EE on exceptions
powerpc/32: implement fast entry for syscalls on non BOOKE
powerpc/32: Remove MSR_PR test when returning from syscall
powerpc/32: don't do syscall stuff in transfer_to_handler on non BOOKE
arch/powerpc/Kconfig | 1 +
arch/powerpc/Makefile | 7 +
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 | 18 +-
arch/powerpc/include/asm/livepatch.h | 7 +-
arch/powerpc/include/asm/processor.h | 105 +---------
arch/powerpc/include/asm/ptrace.h | 2 +-
arch/powerpc/include/asm/reg.h | 2 +-
arch/powerpc/include/asm/smp.h | 17 +-
arch/powerpc/include/asm/task_size_32.h | 21 ++
arch/powerpc/include/asm/task_size_64.h | 79 ++++++++
arch/powerpc/include/asm/thread_info.h | 19 --
arch/powerpc/kernel/asm-offsets.c | 12 +-
arch/powerpc/kernel/entry_32.S | 261 ++++++++++++++-----------
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 | 182 ++++-------------
arch/powerpc/kernel/head_32.h | 203 +++++++++++++++++++
arch/powerpc/kernel/head_40x.S | 154 ++++-----------
arch/powerpc/kernel/head_44x.S | 16 +-
arch/powerpc/kernel/head_64.S | 1 +
arch/powerpc/kernel/head_8xx.S | 133 ++-----------
arch/powerpc/kernel/head_booke.h | 44 ++---
arch/powerpc/kernel/head_fsl_booke.S | 44 ++---
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 | 114 ++---------
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 | 63 +++---
arch/powerpc/kernel/setup-common.c | 2 +-
arch/powerpc/kernel/setup_32.c | 26 ++-
arch/powerpc/kernel/setup_64.c | 51 +----
arch/powerpc/kernel/smp.c | 16 +-
arch/powerpc/kernel/stacktrace.c | 29 ++-
arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 6 +-
arch/powerpc/kernel/traps.c | 8 +
arch/powerpc/kvm/book3s_hv_hmi.c | 1 +
arch/powerpc/mm/hash_low_32.S | 14 +-
arch/powerpc/net/bpf_jit32.h | 5 +-
arch/powerpc/sysdev/6xx-suspend.S | 5 +-
arch/powerpc/xmon/xmon.c | 2 +-
49 files changed, 816 insertions(+), 967 deletions(-)
create mode 100644 arch/powerpc/include/asm/task_size_32.h
create mode 100644 arch/powerpc/include/asm/task_size_64.h
create mode 100644 arch/powerpc/kernel/head_32.h
--
2.13.3
next reply other threads:[~2019-02-08 12:59 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-08 12:52 Christophe Leroy [this message]
2019-02-08 12:52 ` [PATCH v1 01/16] powerpc: CONFIG_THREAD_INFO_IN_TASK series Christophe Leroy
2019-02-08 12:52 ` [PATCH v1 02/16] powerpc/32: Refactor EXCEPTION entry macros for head_8xx.S and head_32.S Christophe Leroy
2019-02-08 12:52 ` [PATCH v1 03/16] powerpc/32: move LOAD_MSR_KERNEL() into head_32.h and use it Christophe Leroy
2019-02-11 0:21 ` Benjamin Herrenschmidt
2019-02-11 6:26 ` Christophe Leroy
2019-02-11 8:06 ` Benjamin Herrenschmidt
2019-02-08 12:52 ` [PATCH v1 04/16] powerpc/32: make the 6xx/8xx EXC_XFER_TEMPLATE() similar to the 40x/booke one Christophe Leroy
2019-02-08 12:52 ` [PATCH v1 05/16] powerpc/40x: Don't use SPRN_SPRG_SCRATCH2 in EXCEPTION_PROLOG Christophe Leroy
2019-02-08 12:52 ` [PATCH v1 06/16] powerpc/40x: add exception frame marker Christophe Leroy
2019-02-08 12:52 ` [PATCH v1 07/16] powerpc/40x: Split and rename NORMAL_EXCEPTION_PROLOG Christophe Leroy
2019-02-08 12:52 ` [PATCH v1 08/16] powerpc/40x: Refactor exception entry macros by using head_32.h Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 09/16] powerpc/fsl_booke: ensure SPEFloatingPointException() reenables interrupts Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 10/16] powerpc/32: enter syscall with MSR_EE inconditionaly set Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 11/16] powerpc/32: Enter exceptions with MSR_EE unset Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 12/16] powerpc/32: get rid of COPY_EE in exception entry Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 13/16] powerpc: Fix 32-bit handling of MSR_EE on exceptions Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 14/16] powerpc/32: implement fast entry for syscalls on non BOOKE Christophe Leroy
2019-02-10 18:05 ` christophe leroy
2019-02-08 12:52 ` [RFC PATCH v1 15/16] powerpc/32: Remove MSR_PR test when returning from syscall Christophe Leroy
2019-02-08 12:52 ` [RFC PATCH v1 16/16] powerpc/32: don't do syscall stuff in transfer_to_handler on non BOOKE Christophe Leroy
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