From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D061CFEEF52 for ; Tue, 7 Apr 2026 14:30:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Ne9YhWeocrXt/5MhGBNsry2kXN5+/RkE7zYzKP/XdTE=; b=LGv1HiZVHDJtzGgor/3rq8h7Yb aUTbQX6XGO0l+vk+e7CfPSp1u+fG5jzavmOT825IiXFib0oBSgJfZ+08Z6GyjfpshLlRxNJesS46Z RGOMC2d4wT3QyTpy97Lrd5X03dv60raTUIYjBuZTrMSTuTBZm/hhlydZGn/X2RYlobeJq6xZtqGKK q4RXZTw7ZWGsz5ucza8o+QOoJXYtyytrYmLl2H+N0GYoiK2ZCV+YXFtpcsFVJ1jKo1wp+B68znxUv W67LRZj+usyWyTX10NkbPVWM87i/3YQDckZm/vsfgSzYKH7unWysv7dflFTD8KoWpBhZ8ouyiaprl FfXHP8hA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wA7RY-00000006biN-3L1Q; Tue, 07 Apr 2026 14:30:16 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wA7RW-00000006bga-3loZ for linux-arm-kernel@lists.infradead.org; Tue, 07 Apr 2026 14:30:14 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 54F9A60127; Tue, 7 Apr 2026 14:30:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C939DC2BCB2; Tue, 7 Apr 2026 14:30:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775572214; bh=2mBdtCMg5XJhO2It05OyZWImRJfyjVt9ZDQUn9Uv+L8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=P5rUk0l17s8TR/KCexB3phw3iVAAw23OVADZWDCjcg1bB08aGDgI4zPKMy1oLe5bs viE39t/tVnQSD21ApcnfZ0RNMwbq+DSQDctZlMR3sjHAvdllC8fDW1TtCxa2NfGlc1 FLtai55m3VKhyc5TnXNphhf7fVspNz1aQm4TF2Bhwgt663SUsvRljb3P63Yv2cImNK mfwkuB8PgNOgQ7n4C96Rrzz6tGPfWMJKDqShG20TTCrOkzCQXXQ/VeiI9B8FRQjSc0 Ino1vjGOmwJl9Oheg1jZ2jaPKwlG07F/8IG6MmBQc++Ua/MrvUC574ZL1DfiSevXdk xcCMoGn71QsJQ== From: "Rob Herring (Arm)" Date: Tue, 07 Apr 2026 09:29:45 -0500 Subject: [PATCH v4 3/6] arm64: hw_breakpoint: Add lockdep_assert_irqs_disabled() on install/uninstall MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260407-arm-debug-8-9-v4-3-a4864e69b0ea@kernel.org> References: <20260407-arm-debug-8-9-v4-0-a4864e69b0ea@kernel.org> In-Reply-To: <20260407-arm-debug-8-9-v4-0-a4864e69b0ea@kernel.org> To: Will Deacon , Mark Rutland , Catalin Marinas , Jonathan Corbet , Shuah Khan Cc: Anshuman Khandual , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org X-Mailer: b4 0.15-dev X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The breakpoint install/uninstall/restore code depends on interrupts being disabled. Make this requirement explicit with a lockdep_assert_irqs_disabled() assertion. Signed-off-by: Rob Herring (Arm) --- arch/arm64/kernel/hw_breakpoint.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c index bb39bc759810..a9266dc710b4 100644 --- a/arch/arm64/kernel/hw_breakpoint.c +++ b/arch/arm64/kernel/hw_breakpoint.c @@ -231,6 +231,8 @@ static int hw_breakpoint_control(struct perf_event *bp, enum dbg_active_el dbg_el = debug_exception_level(info->ctrl.privilege); u32 ctrl; + lockdep_assert_irqs_disabled(); + if (info->ctrl.type == ARM_BREAKPOINT_EXECUTE) { /* Breakpoint */ ctrl_reg = AARCH64_DBG_REG_BCR; -- 2.53.0