linux-kernel - [PATCH v2 00/11] riscv: kprobes: Clean up instruction simulation

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Message-Id: <cover.1747215274.git.namcao@linutronix.de>
Date: Wed, 14 May 2025 11:38:39 +0200
From: Nam Cao <namcao@...utronix.de>
To: Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Nam Cao <namcao@...utronix.de>
Subject: [PATCH v2 00/11] riscv: kprobes: Clean up instruction simulation

Hi,

There is some instruction-processing code in kprobes simulate code. These
code should be insn.h. In fact, most of them is duplicating insn.h.

This series remove the duplicated bits and make use of macros already
defined in insn.h. The non-duplicated bits are moved into insn.h.

v2:
  rebase on top of Alex's patches [1]. This means replacing RV_X with
  RV_X_mask for the first 2 patches. The rest is the same.

[1] https://lore.kernel.org/linux-riscv/20250508125202.108613-1-alexghiti@rivosinc.com/

Nam Cao (11):
  riscv: kprobes: Move branch_rs2_idx to insn.h
  riscv: kprobes: Move branch_funct3 to insn.h
  riscv: kprobes: Remove duplication of RV_EXTRACT_JTYPE_IMM
  riscv: kprobes: Remove duplication of RV_EXTRACT_RS1_REG
  riscv: kprobes: Remove duplication of RV_EXTRACT_BTYPE_IMM
  riscv: kproves: Remove duplication of RVC_EXTRACT_JTYPE_IMM
  riscv: kprobes: Remove duplication of RVC_EXTRACT_C2_RS1_REG
  riscv: kprobes: Remove duplication of RVC_EXTRACT_BTYPE_IMM
  riscv: kprobes: Remove duplication of RV_EXTRACT_RD_REG
  riscv: kprobes: Remove duplication of RV_EXTRACT_UTYPE_IMM
  riscv: kprobes: Remove duplication of RV_EXTRACT_ITYPE_IMM

 arch/riscv/include/asm/insn.h            |  9 +++
 arch/riscv/kernel/probes/simulate-insn.c | 94 +++++-------------------
 2 files changed, 28 insertions(+), 75 deletions(-)

-- 
2.39.5