Received-SPF: pass (google.com: domain of linux-kernel+bounces-121601-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
From: Samuel Holland <samuel.holland@sifive.com>
To: Palmer Dabbelt <palmer@dabbelt.com>
Cc: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn@rivosinc.com>,
	linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Samuel Holland <samuel.holland@sifive.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jason Baron <jbaron@akamai.com>,
	Josh Poimboeuf <jpoimboe@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	bpf@vger.kernel.org
Subject: [PATCH v2 0/7] riscv: Various text patching improvements
Date: Wed, 27 Mar 2024 09:04:39 -0700
Message-ID: <20240327160520.791322-1-samuel.holland@sifive.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Here are a few changes to minimize calls to stop_machine() and
flush_icache_*() in the various text patching functions, as well as
to simplify the code.

This series is based on "[PATCH v3 0/2] riscv: fix patching with IPI"[1].

[1]: https://lore.kernel.org/linux-riscv/20240229121056.203419-1-alexghiti@rivosinc.com/

Changes in v2:
 - Remove unnecessary line wrapping
 - Further simplify patch_insn_set()/patch_insn_write() loop conditions
 - Use min() instead of min_t() since both sides are unsigned long

Samuel Holland (7):
  riscv: jump_label: Batch icache maintenance
  riscv: jump_label: Simplify assembly syntax
  riscv: kprobes: Use patch_text_nosync() for insn slots
  riscv: Simplify text patching loops
  riscv: Pass patch_text() the length in bytes
  riscv: Use offset_in_page() in text patching functions
  riscv: Remove extra variable in patch_text_nosync()

 arch/riscv/include/asm/jump_label.h |  4 +-
 arch/riscv/include/asm/patch.h      |  2 +-
 arch/riscv/kernel/jump_label.c      | 16 +++++--
 arch/riscv/kernel/patch.c           | 69 ++++++++++++++---------------
 arch/riscv/kernel/probes/kprobes.c  | 19 ++++----
 arch/riscv/net/bpf_jit_comp64.c     |  7 +--
 6 files changed, 63 insertions(+), 54 deletions(-)

-- 
2.43.1