| From: |
| Leonardo Bras <leobras-AT-redhat.com> |
| To: |
| Paul Walmsley <paul.walmsley-AT-sifive.com>, Palmer Dabbelt <palmer-AT-dabbelt.com>, Albert Ou <aou-AT-eecs.berkeley.edu>, Eric Biederman <ebiederm-AT-xmission.com>, Kees Cook <keescook-AT-chromium.org>, Oleg Nesterov <oleg-AT-redhat.com>, Leonardo Bras <leobras-AT-redhat.com>, Guo Ren <guoren-AT-kernel.org>, Andy Chiu <andy.chiu-AT-sifive.com>, Conor Dooley <conor.dooley-AT-microchip.com>, Xiao Wang <xiao.w.wang-AT-intel.com>, Vincent Chen <vincent.chen-AT-sifive.com>, Charlie Jenkins <charlie-AT-rivosinc.com>, Greg Ungerer <gerg-AT-kernel.org>, Andrew Morton <akpm-AT-linux-foundation.org>, Kemeng Shi <shikemeng-AT-huaweicloud.com>, Alexandre Ghiti <alexghiti-AT-rivosinc.com>, David Hildenbrand <david-AT-redhat.com>, "Matthew Wilcox (Oracle)" <willy-AT-infradead.org>, Qinglin Pan <panqinglin2020-AT-iscas.ac.cn>, Greentime Hu <greentime.hu-AT-sifive.com>, Baoquan He <bhe-AT-redhat.com>, Clément Léger <cleger-AT-rivosinc.com> |
| Subject: |
| [PATCH v1 0/5] riscv: Introduce compat-mode helpers & improve arch_get_mmap_end() |
| Date: |
| Wed, 03 Jan 2024 13:00:18 -0300 |
| Message-ID: |
| <20240103160024.70305-2-leobras@redhat.com> |
| Cc: |
| linux-riscv-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, linux-mm-AT-kvack.org |
| Archive-link: |
| Article |
I just saw the opportunity of optimizing the helper is_compat_task() by
introducing a compile-time test, and it made possible to remove some
#ifdef's without any loss of performance.
I also saw the possibility of removing the direct check of task flags from
general code, and concentrated it in asm/compat.h by creating a few more
helpers, which in the end helped optimize code.
arch_get_mmap_end() just got a simple improvement and some extra docs.
Changes since RFC:
- Fused with other patchset: Improve arch_get_mmap_end() macro
- Renamed from "Introduce & Optimize compat-mode helpers"
Leonardo Bras (5):
riscv: Improve arch_get_mmap_end() macro
riscv: Replace direct thread flag check with is_compat_task()
riscv: add compile-time test into is_compat_task()
riscv: Introduce is_compat_thread() into compat.h
riscv: Introduce set_compat_task() in asm/compat.h
arch/riscv/include/asm/compat.h | 19 +++++++++++++++++++
arch/riscv/include/asm/elf.h | 11 ++---------
arch/riscv/include/asm/pgtable.h | 8 +-------
arch/riscv/include/asm/processor.h | 16 +++++++++++-----
arch/riscv/kernel/ptrace.c | 6 +++---
5 files changed, 36 insertions(+), 24 deletions(-)
base-commit: 610a9b8f49fbcf1100716370d3b5f6f884a2835a
--
2.43.0
