From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (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 57C69299924; Wed, 22 Oct 2025 11:36:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761132963; cv=none; b=hf0wfKmTtvk/hRZb2gvdvpc7V4e74BMqO28pUJOMtxehz9JMW2dAJKmMSRlW5dQcxZ66p1/v9cepKLfAyqqtl0Mgih1oICb1REnx/yELg/09wp2Eu2ivRN1DWaLl54cGZiJ11+pPNum25E3Jl54KeOGEFMG4lDKYX7BITOS0u3M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761132963; c=relaxed/simple; bh=ZEgj6f//WdHQAv7xeAXK42fpm5RMJSgygoGQlOHCQmY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=j3flFGebek9XrUosBTD9nffGVlPkwafLuYWgLriopp8bJ81RMZYe+d3Ujm5SEXHkryFxdo2SEAyZgFxeuYgWkOgXgK3LrCurLol0iM5gw/g0D2H0j7905zKIGPLFGS2HquuHV5dn3d+k29BC5G8gx1BWj6cwTFj7/i12qiSOvPg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4cs6Ws33H3z6K6p7; Wed, 22 Oct 2025 19:34:33 +0800 (CST) Received: from dubpeml100005.china.huawei.com (unknown [7.214.146.113]) by mail.maildlp.com (Postfix) with ESMTPS id 9F1CA1400C8; Wed, 22 Oct 2025 19:35:57 +0800 (CST) Received: from SecurePC-101-06.huawei.com (10.122.19.247) by dubpeml100005.china.huawei.com (7.214.146.113) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 22 Oct 2025 12:35:56 +0100 From: Jonathan Cameron To: Conor Dooley , Catalin Marinas , , , , , Dan Williams , "H . Peter Anvin" , Peter Zijlstra , Andrew Morton CC: , Will Deacon , Davidlohr Bueso , , Yushan Wang , Lorenzo Pieralisi , Mark Rutland , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , , Andy Lutomirski , Dave Jiang Subject: [PATCH v4 4/6] arm64: Select GENERIC_CPU_CACHE_MAINTENANCE Date: Wed, 22 Oct 2025 12:33:47 +0100 Message-ID: <20251022113349.1711388-5-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251022113349.1711388-1-Jonathan.Cameron@huawei.com> References: <20251022113349.1711388-1-Jonathan.Cameron@huawei.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: lhrpeml100011.china.huawei.com (7.191.174.247) To dubpeml100005.china.huawei.com (7.214.146.113) The generic CPU cache maintenance framework provides a way to register drivers for devices implementing the underlying support for cpu_cache_has_invalidate_memregion(). Enable it for arm64 by selecting GENERIC_CPU_CACHE_MAINTENANCE which provides the implementation for, and in turn selects, ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION. Signed-off-by: Jonathan Cameron Acked-by: Catalin Marinas --- v4: Drop select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION as that is now selected by GENERIC_CPU_CACHE_MAINTENANCE (Catalin Marinas) Picked up tag from Catalin. (thanks!) --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 6663ffd23f25..893e0af0bc51 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -149,6 +149,7 @@ config ARM64 select GENERIC_ARCH_TOPOLOGY select GENERIC_CLOCKEVENTS_BROADCAST select GENERIC_CPU_AUTOPROBE + select GENERIC_CPU_CACHE_MAINTENANCE select GENERIC_CPU_DEVICES select GENERIC_CPU_VULNERABILITIES select GENERIC_EARLY_IOREMAP -- 2.48.1