From mboxrd@z Thu Jan 1 00:00:00 1970 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.subspace.kernel.org (Postfix) with ESMTPS id 11E8436CE0D; Wed, 20 Aug 2025 17:07:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755709632; cv=none; b=mTRC8TOECUEcUmb8kC1FB4KJ3e/Ie3qU0rfmhnQnu3tkp8Vygja1HPRXecnEaTiWxyLlG5u4QytTsx/ZUZGQVPRFY0ALvU8ADv18LKFKfsGNpDAx8hR6pSH8QHd+SyltnwlAe/aRzWvn5UGLa4l69f4rXOUaLrUs29Qi6E0ia28= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755709632; c=relaxed/simple; bh=zJJXarkWRvK9U5sgJZh498uNlfpa8H3ZMfTenpd3sjA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=VXxM8yW9yTorhWDXlUgf8wbOjC0+Pi23ELVzqLm4uHd5Kp5CPPs33daeUcVD8eXYsq6D+A2siN7cRweNaz/83kIOvqFPBDDlabd0YyDQvi9T9pdXv8WORflAy5NuYzIYsvKDU3HmGKqfsaeJ3RDAGKlKuuAKEPhiR2yA/Qe7wWA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=R/9SvcRf; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="R/9SvcRf" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Sender:Reply-To:Content-ID:Content-Description; bh=qayB9LeR+RX6qridAjwC/zM9VoXQvXrNVT4vZTRfnEA=; b=R/9SvcRfJuRvlkls/k6xHiZo0X 7JJOUj/v+RIkIQ3mpC3FpeaiwocGruY1eprsKXh06G8RTQcg5BAQTeprwpvLcw4Mi8DmFYXTFgEdM R0JZ7nWeBSdQngpgJTmRBhg0RtStcBJOJaHl0CrcWj1wApC62jEkVYeDLiUJ0YNfheUyM+3NbDgVk mBRPhB+APpGklJ7AQyKqWdv5YlxKFmReO9DU1jffLEvPUGP1oKzNXeC9HkH99Er6Iw+K7Fv6gq9M3 Wp6KGkNzn+Ea767MMcS0lG6kMbPI5qWa+JxC+1jxfYqL26wuFOSF3kY56cfDDhYAqM1Wc7wp/yMyv Gdjhnkhw==; Received: from [50.53.25.54] (helo=[192.168.254.17]) by bombadil.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1uomHF-0000000ETuY-2LE7; Wed, 20 Aug 2025 17:07:09 +0000 Message-ID: Date: Wed, 20 Aug 2025 10:07:08 -0700 Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 7/8] acpi: PoC of Cache control via ACPI0019 and _DSM To: Jonathan Cameron , Catalin Marinas , james.morse@arm.com, linux-cxl@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Will Deacon , Dan Williams , Davidlohr Bueso , "H . Peter Anvin" , Peter Zijlstra Cc: Yicong Yang , linuxarm@huawei.com, Yushan Wang , Lorenzo Pieralisi , Mark Rutland , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, Andy Lutomirski References: <20250820102950.175065-1-Jonathan.Cameron@huawei.com> <20250820102950.175065-8-Jonathan.Cameron@huawei.com> Content-Language: en-US From: Randy Dunlap In-Reply-To: <20250820102950.175065-8-Jonathan.Cameron@huawei.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi, On 8/20/25 3:29 AM, Jonathan Cameron wrote: > diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig > index 4551b28e14dd..158d3819004e 100644 > --- a/drivers/cache/Kconfig > +++ b/drivers/cache/Kconfig > @@ -3,6 +3,13 @@ menu "Cache Drivers" > > if GENERIC_CPU_CACHE_MAINTENANCE > > +config ACPI_CACHE_CONTROL > + tristate "ACPI cache maintenance" > + depends on ARM64 && ACPI > + help If there is a v4, please use one tab to indent the 3 lines above. > + ACPI0019 device ID in DSDT identifies an interface that may be used and tab + 2 spaces to indent the 1 line above. > + to carry out certain forms of cache flush operation. -- ~Randy