From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5AC5C433DB for ; Mon, 18 Jan 2021 10:00:48 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 6D6A522B49 for ; Mon, 18 Jan 2021 10:00:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D6A522B49 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 1DE004B256; Mon, 18 Jan 2021 05:00:48 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id K7BlT+ylh9kl; Mon, 18 Jan 2021 05:00:44 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 440CA4B2A4; Mon, 18 Jan 2021 05:00:39 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 83C1E4B230 for ; Mon, 18 Jan 2021 05:00:38 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id N3kMPbeb7jdp for ; Mon, 18 Jan 2021 05:00:37 -0500 (EST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 383F24B2A4 for ; Mon, 18 Jan 2021 05:00:34 -0500 (EST) Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 382EF22B40; Mon, 18 Jan 2021 10:00:33 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1l1R6w-008RhD-F5; Mon, 18 Jan 2021 09:46:11 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Subject: [PATCH v4 15/21] arm64: Add an aliasing facility for the idreg override Date: Mon, 18 Jan 2021 09:45:27 +0000 Message-Id: <20210118094533.2874082-16-maz@kernel.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210118094533.2874082-1-maz@kernel.org> References: <20210118094533.2874082-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, dbrazdil@google.com, alexandru.elisei@arm.com, ardb@kernel.org, jingzhangos@google.com, pajay@qti.qualcomm.com, psodagud@codeaurora.org, sramana@codeaurora.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: Prasad Sodagudi , Srinivas Ramana , Catalin Marinas , Ajay Patil , kernel-team@android.com, Will Deacon , Ard Biesheuvel X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu In order to map the override of idregs to options that a user can easily understand, let's introduce yet another option array, which maps an option to the corresponding idreg options. Signed-off-by: Marc Zyngier --- arch/arm64/kernel/idreg-override.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c index 75d9845f489b..16bc8b3b93ae 100644 --- a/arch/arm64/kernel/idreg-override.c +++ b/arch/arm64/kernel/idreg-override.c @@ -37,6 +37,12 @@ static const struct reg_desc * const regs[] __initdata = { &mmfr1, }; +static const struct { + const char * const alias; + const char * const feature; +} aliases[] __initdata = { +}; + static int __init find_field(const char *cmdline, const struct reg_desc *reg, int f, u64 *v) { @@ -80,6 +86,18 @@ static void __init match_options(const char *cmdline) } } +static __init void match_aliases(const char *cmdline) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(aliases); i++) { + char *str = strstr(cmdline, aliases[i].alias); + + if ((str == cmdline || (str > cmdline && *(str - 1) == ' '))) + match_options(aliases[i].feature); + } +} + static __init void parse_cmdline(void) { if (!IS_ENABLED(CONFIG_CMDLINE_FORCE)) { @@ -100,6 +118,7 @@ static __init void parse_cmdline(void) goto out; match_options(prop); + match_aliases(prop); if (!IS_ENABLED(CONFIG_CMDLINE_EXTEND)) return; @@ -107,6 +126,7 @@ static __init void parse_cmdline(void) out: match_options(CONFIG_CMDLINE); + match_aliases(CONFIG_CMDLINE); } void __init init_shadow_regs(void) -- 2.29.2 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm