From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E3536216E26 for ; Fri, 7 Mar 2025 11:17:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741346229; cv=none; b=MQHKFzKZWsUHkqrE47bxxNowheSWzLzGrxk3J/EPpYLmjgJrn0lAmfFJezx07VkHYdrQLXmhZT6KD4UxHmEYlHCsa3yQuNf/ENg274rj3oUTpv2bItUNtJ0z+yVli4BpuBAS+4cwMWyw/diZcIZcIgrFeUlcZQ9N0tCHOuAZDrU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741346229; c=relaxed/simple; bh=kB3NTioPVzzEL/PSwxAI9BjNOFiUwLhJpSS8vfDoHiE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=cewi2U0aOLGCWKxwscD9zaQQi8HFFJxrQ2W3rfxy6vCW/Y4OPeMuS2QhRBkdFwu4cRayBv0OYc6EeAw1eOBKU3uUTXo4oKdQWIsW5tw+rdxLwvWUvnxzUj8jmKqi1T/eVuKZtk+Ea3AKY7fCMNdwaWNRTr20Fw1PWOlPyddNIO8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=szgl9F3M; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="szgl9F3M" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7ECA0C4CED1; Fri, 7 Mar 2025 11:17:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741346228; bh=kB3NTioPVzzEL/PSwxAI9BjNOFiUwLhJpSS8vfDoHiE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=szgl9F3MsoFYjb4kUVwvjIDORzjjqkQz1NXZFJ7s9wPf7Xp4p7iptF5apHMgjvS1m /71xOdHq/PFt1ZWuJ2lpWLYOxRAWe6T1tGKNlyF6bVWMb6syWIeeuBRoppxe6QXIy8 XdrbcWVC7a+vub3xZFHmAzh+Y4sE8gxjKgoppRxzn6mtUBODOjveAmoF6VQ3K7dpXf M0UWGqJK2S+ffJ8YosdHb7pytT5XbhdywFAFo+zBQYTh8/zXKmF50VtFkspzVlvhHt 776J1LknCZyzIqNLSMCuavziOtXrp9KNBl4t6s8wqe5HGPnRL3skf3+JLM5oMlEn+P kKFmTLO1Yhl4w== Message-ID: Date: Fri, 7 Mar 2025 12:17:03 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] clocksource: timer-sp804: Fix read_current_timer() issue when clock source is not registered To: Daniel Lezcano , stephen eta zhou Cc: "tglx@linutronix.de" , "linux-kernel@vger.kernel.org" References: <198fe423-e797-4a82-a509-ee06ca05466e@linaro.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 07/03/2025 09:10, Daniel Lezcano wrote: > > Hi Stephen, > > thanks for the proposed fix > > On 21/02/2025 04:46, stephen eta zhou wrote: >> Hi daniel >> >> While debugging on the vexpress-v2p-ca9 platform, I discovered that the read_current_timer API wasn't functioning correctly. The issue was that the SP804 driver lacked ARM32 support and did not register read_current_timer. To add ARM32 compatibility, I’ve submitted this patch. Without it, using SP804 as the timer on ARM32 causes issues with boot_init_stack_canary when inserting the canary value into the interrupt stack, and also affects entropy generation and collection, resulting in incorrect rdseed values. > > It is better to put that information in the changelog and provide a > fixed format of the patch description. Daniel, In case you actually consider applying this - some of the patches or their descriptions were generated by sort of AI tools, thus approach with caution. It was already pointed out that patches might be a garbage output of AI. Also they were not tested, even though what is claimed here "debugging on ...". Best regards, Krzysztof