From patchwork Thu Jul 29 02:07:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WWVlIExlZSAo5p2O5bu66Kq8KQ==?= X-Patchwork-Id: 12407453 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=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, 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 72E33C4338F for ; Thu, 29 Jul 2021 02:09:22 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 32B1D60462 for ; Thu, 29 Jul 2021 02:09:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 32B1D60462 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RpJlc+uG1Z1qbrroRfZ+UwZeKSz0zjmidDGntvRYpNs=; b=twkNLmamGOSjW7 rkA2K4pKjN6g08L7NiAF5oIzI7BHAnHhtQV2Gna9EeUIL7uS+05eTmqDebxyqIi3uqHVhwqo4Ch76 bCwpe7g2slrUpq3Tk80svKgqJ2bcONZSzKz8vehHjWHOJk8tXHFXATtLJAXqGFTbvGHJLmOqNSXeH FAnEvnJQZhyJFWZwFTunOIEfshRCvXSluVjGmbxDpuwKLd2zsf6gr0pLyvjy4Xd9qQDF99PfpWjHG EP7mK3U5N8+RiHRQmmqWN4nPSNRBOfmiITXKpG/PIX7qnI6r0bQMGm8KU//w170nWOQyszjoGgO3q w/s36c7kYbMNHf+wnqjQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8vSc-002s1b-3W; Thu, 29 Jul 2021 02:07:46 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8vSS-002rv3-PQ; Thu, 29 Jul 2021 02:07:38 +0000 X-UUID: 649694ec62134466a60a5ca42396c071-20210728 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=Bl/lNRQr1DHHQnddTvDXa7ZfXJG0SH1PVCRqIwJTXTc=; b=o1od5nOeQPTYhgSc9O5PapSaCQ5q/phehE2CtYQ+Pow7tNr7YnntHoScNkXPmHR+jLiSpFro27H7kMBNw0C1IQKie/FVHEPsQgjORVPOwcHesczaexZi18U/WhyhWo1YvIfNvmLb/z87TJOLvgYuTP3omeVJmmlPNWTaXwaeCeQ=; X-UUID: 649694ec62134466a60a5ca42396c071-20210728 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2041906155; Wed, 28 Jul 2021 19:07:33 -0700 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 28 Jul 2021 19:07:31 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 29 Jul 2021 10:07:29 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 29 Jul 2021 10:07:29 +0800 From: To: CC: , , , Yee Lee , Catalin Marinas , Will Deacon , Matthias Brugger , Marc Zyngier , David Brazdil , Ard Biesheuvel , Fuad Tabba , "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" , "moderated list:ARM/Mediatek SoC support" Subject: [PATCH v2 1/1] arm64/cpufeature: Add arm64.nomte to override id-reg Date: Thu, 29 Jul 2021 10:07:12 +0800 Message-ID: <20210729020717.15142-2-yee.lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210729020717.15142-1-yee.lee@mediatek.com> References: <20210729020717.15142-1-yee.lee@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210728_190736_906728_596664F6 X-CRM114-Status: UNSURE ( 9.51 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Yee Lee Add an alias, "arm64.nomte", to override id-reg and suppress mte feature. Suggested-by: Marc Zyngier Suggested-by: Suzuki K Poulose Signed-off-by: Yee Lee --- arch/arm64/kernel/idreg-override.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c index 53a381a7f65d..d8e606fe3c21 100644 --- a/arch/arm64/kernel/idreg-override.c +++ b/arch/arm64/kernel/idreg-override.c @@ -54,6 +54,7 @@ static const struct ftr_set_desc pfr1 __initconst = { .override = &id_aa64pfr1_override, .fields = { { "bt", ID_AA64PFR1_BT_SHIFT }, + { "mte", ID_AA64PFR1_MTE_SHIFT}, {} }, }; @@ -100,6 +101,7 @@ static const struct { { "arm64.nopauth", "id_aa64isar1.gpi=0 id_aa64isar1.gpa=0 " "id_aa64isar1.api=0 id_aa64isar1.apa=0" }, + { "arm64.nomte", "id_aa64pfr1.mte=0" }, { "nokaslr", "kaslr.disabled=1" }, };