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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 226B8C7EE29 for ; Fri, 2 Jun 2023 17:03:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236940AbjFBRC7 (ORCPT ); Fri, 2 Jun 2023 13:02:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236913AbjFBRCx (ORCPT ); Fri, 2 Jun 2023 13:02:53 -0400 Received: from mail-io1-xd4a.google.com (mail-io1-xd4a.google.com [IPv6:2607:f8b0:4864:20::d4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 492BB1AD for ; Fri, 2 Jun 2023 10:02:52 -0700 (PDT) Received: by mail-io1-xd4a.google.com with SMTP id ca18e2360f4ac-76c6c1b16d2so117570439f.1 for ; Fri, 02 Jun 2023 10:02:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1685725371; x=1688317371; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=DZrtPESLe1mA5daPGrUc+60GXQlGnhOLsAUJu36d7rQ=; b=Qq3RLBS2mk0SnALShNCtm+TQlg+XH/AHekNH7/7QlGAv3Kwq/6fPi6+CvfRavpIs4G RjyTeXe+0RGaZAufFJ8EvFNFa8pOjeTTjjb8sD9rItu1zRExurnNtBOtX6w1QJedD+7I afR/Bn/wNwB2NO7fNerz8ES6XgY4MyN711P03otg/ynXmiG0KHjiA/NCjGChETeqa8Sq PPIW2euhDqJ/s3oFviuWT4EcIxz18d4QuSIOimUwO4KwNQ9xdjmAWN3FZO+WhB+n8/fm Z+b1LzGrVLf99x0xH1gni5y4fL0Jf+jIx8h2sro9EeSCJDdt5AbgU5s/l97G1yjsUE5q 7IyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685725371; x=1688317371; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=DZrtPESLe1mA5daPGrUc+60GXQlGnhOLsAUJu36d7rQ=; b=b8l+q3MjEoZExbEeHwSh4MJyHmjBDjz0GWjX10WqsCV4LIRcUo6uRu6G9qyCyn7wGv X80Mnj+hKLHfrv9UwUYyjoUrXMufInvgEkoJ6aAeMR7IRkah1WBzKP87xBLKfhOtOmT1 rRgPwf03p65KKAYWUn+WRn13Ip22xY6q3dlzA3LOJmQEOblI6kZ+c6+ayn4JMYVItxcK gmeZMCYQteBweac+ylqdYQEbCk0MPLcNLOULeOxP7qmcBz9NxOc7stR4SA2bVhjoHYum +1Qd/rZn0sBQwbf2EYpDU2QIHQMfrmGdny5JdVv7eTsuGnR0oKBRPREph6yB1Pdbw4nf zGFg== X-Gm-Message-State: AC+VfDxuJ7oJ/kVGHxi7tsIVHVrwVU1YSgc0AkeHusVL4zmFDz97m1oP L6MGj4J3RzOE0I9QYOShgocO6C6/oAdQZhqSRg== X-Google-Smtp-Source: ACHHUZ7jQlp0MVeJbVOdhempnaGESwJq6ISHR98G4dlzn8EXHZtiMaS3iQFnqJ6k1wVSGZ9JZpTQJ2Y+ISmEsdfLAw== X-Received: from coltonlewis-kvm.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:14ce]) (user=coltonlewis job=sendgmr) by 2002:a6b:5904:0:b0:766:6741:8849 with SMTP id n4-20020a6b5904000000b0076667418849mr1203200iob.3.1685725371731; Fri, 02 Jun 2023 10:02:51 -0700 (PDT) Date: Fri, 2 Jun 2023 17:01:45 +0000 In-Reply-To: <20230602170147.1541355-1-coltonlewis@google.com> Mime-Version: 1.0 References: <20230602170147.1541355-1-coltonlewis@google.com> X-Mailer: git-send-email 2.41.0.rc0.172.g3f132b7071-goog Message-ID: <20230602170147.1541355-2-coltonlewis@google.com> Subject: [PATCH 1/3] arm64: Add a capability for FEAT_BBM level 2 From: Colton Lewis To: kvm@vger.kernel.org Cc: Catalin Marinas , Will Deacon , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, Ricardo Koller Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ricardo Koller Add a new capability to detect "Stage-2 Translation table break-before-make" (FEAT_BBM) level 2. Signed-off-by: Ricardo Koller --- arch/arm64/kernel/cpufeature.c | 11 +++++++++++ arch/arm64/tools/cpucaps | 1 + 2 files changed, 12 insertions(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index c331c49a7d19c..c538060f7f66b 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2455,6 +2455,17 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .min_field_value = 1, .matches = has_cpuid_feature, }, + { + .desc = "Stage-2 Translation table break-before-make level 2", + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .capability = ARM64_HAS_STAGE2_BBM2, + .sys_reg = SYS_ID_AA64MMFR2_EL1, + .sign = FTR_UNSIGNED, + .field_pos = ID_AA64MMFR2_EL1_BBM_SHIFT, + .field_width = 4, + .min_field_value = 2, + .matches = has_cpuid_feature, + }, { .desc = "TLB range maintenance instructions", .capability = ARM64_HAS_TLB_RANGE, diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 40ba95472594d..010aca1892642 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -41,6 +41,7 @@ HAS_PAN HAS_RAS_EXTN HAS_RNG HAS_SB +HAS_STAGE2_BBM2 HAS_STAGE2_FWB HAS_TIDCP1 HAS_TLB_RANGE -- 2.41.0.rc0.172.g3f132b7071-goog