From: Khaja Hussain Shaik Khaji <khaja.khaji@oss.qualcomm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: mark.rutland@arm.com, catalin.marinas@arm.com, dev.jain@arm.com,
linux-kernel@vger.kernel.org, yang@os.amperecomputing.com,
linux-arm-msm@vger.kernel.org, will@kernel.org,
mhiramat@kernel.org
Subject: [PATCH v2 2/2] arm64: insn: drop NOP from steppable hint list
Date: Tue, 17 Feb 2026 19:08:55 +0530 [thread overview]
Message-ID: <20260217133855.3142192-3-khaja.khaji@oss.qualcomm.com> (raw)
In-Reply-To: <20260217133855.3142192-1-khaja.khaji@oss.qualcomm.com>
NOP is already handled via instruction emulation and does not require
single-stepping. Drop it from aarch64_insn_is_steppable_hint().
Signed-off-by: Khaja Hussain Shaik Khaji <khaja.khaji@oss.qualcomm.com>
---
arch/arm64/include/asm/insn.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/include/asm/insn.h b/arch/arm64/include/asm/insn.h
index e1d30ba99d01..9429f76906e0 100644
--- a/arch/arm64/include/asm/insn.h
+++ b/arch/arm64/include/asm/insn.h
@@ -456,7 +456,6 @@ static __always_inline bool aarch64_insn_is_steppable_hint(u32 insn)
case AARCH64_INSN_HINT_BTIC:
case AARCH64_INSN_HINT_BTIJ:
case AARCH64_INSN_HINT_BTIJC:
- case AARCH64_INSN_HINT_NOP:
return true;
default:
return false;
--
2.34.1
next prev parent reply other threads:[~2026-02-17 13:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-06 10:49 [PATCH] arm64: insn: Route BTI to simulate_nop to avoid XOL/SS at function entry Khaja Hussain Shaik Khaji
2025-11-11 10:26 ` Mark Rutland
2025-11-12 12:17 ` Mark Rutland
2026-02-17 13:38 ` [PATCH v2 0/2] arm64: kprobes: fix XOL preemption window Khaja Hussain Shaik Khaji
2026-02-17 13:38 ` [PATCH v2 1/2] arm64: kprobes: disable preemption across XOL single-step Khaja Hussain Shaik Khaji
2026-02-17 16:55 ` Mark Rutland
2026-02-23 16:07 ` Masami Hiramatsu
2026-03-02 10:19 ` Khaja Hussain Shaik Khaji
2026-03-02 10:23 ` Mark Rutland
2026-03-02 10:53 ` [PATCH v3 0/1] kernel: kprobes: fix cur_kprobe corruption during Khaja Hussain Shaik Khaji
2026-03-02 10:53 ` [PATCH v3 1/1] kernel: kprobes: fix cur_kprobe corruption during re-entrant kprobe_busy_begin() calls Khaja Hussain Shaik Khaji
2026-03-02 13:38 ` Mark Rutland
2026-03-02 11:23 ` [PATCH v3 0/1] kernel: kprobes: fix cur_kprobe corruption during Mark Rutland
2026-03-02 12:23 ` [PATCH v3 0/1] kernel: kprobes: fix cur_kprobe corruption during re-entrant kprobe_busy_begin() calls Khaja Hussain Shaik Khaji
2026-03-02 13:43 ` Mark Rutland
2026-02-17 13:38 ` Khaja Hussain Shaik Khaji [this message]
2026-02-17 16:57 ` [PATCH v2 2/2] arm64: insn: drop NOP from steppable hint list Mark Rutland
2026-02-24 8:23 ` Masami Hiramatsu
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