From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 822E6378D82 for ; Fri, 29 May 2026 17:05:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780074333; cv=none; b=bRh55OeKR7iRpGdP3hBjoxL4y/IGqaBvdD3darskUmHRzL0baSpAVBqHcD1TFXCwEqXSWqCOvXcmleHbr/lMjVps/NEYjxHeykCPH5lAtaEixEwGNjfd3PK3g5QLbOovAk7oiLJlYMvFrYAHRdxhERomjCO1U24WLtdPKpraxec= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780074333; c=relaxed/simple; bh=fhv+F4PMFpsg55KDSG9Z1A+Pt8O7O/9mlFmEknERxGE=; h=Message-ID:Date:MIME-Version:Subject:To:References:From:Cc: In-Reply-To:Content-Type; b=j2OJzAxMAYN1FaM0sdDcYFpC4MwBYqq2hXMxRVCVYsFUjpMMsbjuXWAF7rCGngGhI3a+u+tk0ItQ/q9X4U89ttg57jQkDuOXyOuUKwpCRPDr3JSV2Kh3gag3Ob7byyw/fjV37O41qrnixuiVzhamvfs/3pI0xnhQe45Co/0VNW0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=ABQLmk1c; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="ABQLmk1c" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AB70A34FB; Fri, 29 May 2026 10:05:25 -0700 (PDT) Received: from [10.57.36.140] (unknown [10.57.36.140]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DC4953F905; Fri, 29 May 2026 10:05:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1780074330; bh=fhv+F4PMFpsg55KDSG9Z1A+Pt8O7O/9mlFmEknERxGE=; h=Date:Subject:To:References:From:Cc:In-Reply-To:From; b=ABQLmk1cufg9gpt7uCZFlyS5DspuAcLnWSZSB3mGuwbri1mSIjTgCjvazUcsjHmoG hja2d6sxnFSqXyMn+lUmw2C4lPAhbVgj5TGybBKk8dEhz8ocOCpdKyasjCeDV66t1/ Ko28on+dqg4IhTE8OmqwJOSHnTRsMXdBAQtJLH8A= Message-ID: Date: Fri, 29 May 2026 18:05:27 +0100 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6.12-stable 00/14] Backport: arm64: debug: remove hook registration, split exception entry To: Sebastian Andrzej Siewior , stable@vger.kernel.org References: <20260528144825.850351-1-bigeasy@linutronix.de> <48316697-6c3b-465c-a49a-d2adb749d459@arm.com> From: Ada Couprie Diaz Content-Language: en-US, en-GB, fr Cc: Ada Couprie Diaz Organization: Arm Ltd. In-Reply-To: <48316697-6c3b-465c-a49a-d2adb749d459@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 29/05/2026 14:38, Ada Couprie Diaz wrote: > Hi Sebastian, thanks a lot for the backport ! > > I'll take a more thorough look soon just to check, but the original > series contained a bug with pseudo-NMIs, which I corrected > in a later patch[0] in commit ea0d55ae4b32 ("arm64: debug: > always unmask interrupts in el0_softstp()"). > > I see that the bug is present in the backport, so the fix should > definitely > be added to the series ! > > Kind regards, > Ada > > [0]: > https://lore.kernel.org/all/20251014092536.18831-1-ada.coupriediaz@arm.com/ > > On 28/05/2026 15:48, Sebastian Andrzej Siewior wrote: >> Hi, >> >> this is a backport of the "arm64: debug: remove hook registration, split >> exception entry" series >>     https://lore.kernel.org/all/20250707114109.35672-1-ada.coupriediaz@arm.com/ >> >> >> which has been merged as of v6.17-rc1. It fixes the HW breakpoint issue >> on PREEMPT_RT. >> >> I only picked one dependency and manually fixed the other conflicts to >> avoid a larger backport. Given the conflicts do not seem to have required significant code changes, I don't know how useful it is but it all looks good to me ; conditional on pulling the EL0 soft-step fix for pseudo-NMIs with the backport. Reviewed-by: Ada Couprie Diaz Thanks again for backporting the series ! Kind regards, Ada >> >> This has been prepared against v6.12.91. v6.12-stable is the only >> relevant tree for a backport (earlier stable version have no PREEMPT_RT >> support). >> >> [...] >> >> Sebastian