From patchwork Wed Mar 12 13:52:50 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Fancellu X-Patchwork-Id: 14013591 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 48B47C28B28 for ; Wed, 12 Mar 2025 13:53:46 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.910338.1317104 (Exim 4.92) (envelope-from ) id 1tsMWI-0007d4-HO; Wed, 12 Mar 2025 13:53:14 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 910338.1317104; Wed, 12 Mar 2025 13:53:14 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tsMWI-0007cv-EH; Wed, 12 Mar 2025 13:53:14 +0000 Received: by outflank-mailman (input) for mailman id 910338; Wed, 12 Mar 2025 13:53:12 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tsMWG-0007NP-Oi for xen-devel@lists.xenproject.org; Wed, 12 Mar 2025 13:53:12 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-flk1.inumbo.com (Halon) with ESMTP id 555dad2c-ff49-11ef-9898-31a8f345e629; Wed, 12 Mar 2025 14:53:10 +0100 (CET) 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 8B621152B; Wed, 12 Mar 2025 06:53:20 -0700 (PDT) Received: from e125770.cambridge.arm.com (e125770.arm.com [10.1.199.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CEFF53F5A1; Wed, 12 Mar 2025 06:53:08 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 555dad2c-ff49-11ef-9898-31a8f345e629 From: Luca Fancellu To: xen-devel@lists.xenproject.org Cc: Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , Volodymyr Babchuk Subject: [v5,02/10] xen/arm: Restrict Kconfig configuration for LLC coloring Date: Wed, 12 Mar 2025 13:52:50 +0000 Message-Id: <20250312135258.1815706-3-luca.fancellu@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250312135258.1815706-1-luca.fancellu@arm.com> References: <20250312135258.1815706-1-luca.fancellu@arm.com> MIME-Version: 1.0 Xen LLC coloring feature can be used only on the MMU subsystem, move the code that selects it from ARM_64 to MMU and add the ARM_64 dependency. Signed-off-by: Luca Fancellu Reviewed-by: Michal Orzel --- https://patchwork.kernel.org/project/xen-devel/patch/20250307075818.740649-3-luca.fancellu@arm.com/ v5 changes: - no changes v4 changes: - clarified that it's the Xen feature LLC coloring that is not applicable to the MPU subsystem, not the generic cache coloring method. - Add R-by Michal v3 changes: - Dropped comment on top of boot_fdt_info() v2 changes: - dropped part of the v1 code, now this one is simpler, I will discuss better how to design a common boot flow for MPU and implement on another patch. --- --- xen/arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig index a26d3e11827c..ffdff1f0a36c 100644 --- a/xen/arch/arm/Kconfig +++ b/xen/arch/arm/Kconfig @@ -8,7 +8,6 @@ config ARM_64 depends on !ARM_32 select 64BIT select HAS_FAST_MULTIPLY - select HAS_LLC_COLORING if !NUMA config ARM def_bool y @@ -76,6 +75,7 @@ choice config MMU bool "MMU" + select HAS_LLC_COLORING if !NUMA && ARM_64 select HAS_PMAP select HAS_VMAP select HAS_PASSTHROUGH