From patchwork Thu Apr 1 10:40:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haibo Xu X-Patchwork-Id: 413575 Delivered-To: patch@linaro.org Received: by 2002:a02:8562:0:0:0:0:0 with SMTP id g89csp438478jai; Thu, 1 Apr 2021 03:44:08 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzHuSkbYqbYiVTYegYB30jMV83fSwl4RqKKqGx/+8ky46eUXhQozIdwOlDetgGxnreWvYlT X-Received: by 2002:a05:6e02:188b:: with SMTP id o11mr5984122ilu.294.1617273848501; Thu, 01 Apr 2021 03:44:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1617273848; cv=none; d=google.com; s=arc-20160816; b=lB3oGCliTe/q1vQ58/ffsQVUHynjQEbwGlaKEh/DruLY2AyPMlQU6lZZFSXgTffKRG AYhgzk+OYNQXhMcXBB1leRFISCiskaI9yVOKkXoR8yn9hLMSI7w3AJoFYTVuIbwvfvBh rNqhe1QCB9uk7A7T3UEqZuGdgn1ktmuUZH6a0zGVgf9vukpIR5DR8x1mv1vosU1+TCrd 9L/U9eGfg+KqispA7utTyo5hlIO3UZGVohkhhapzqQx5X/Xo3f9GhT3fRu1FJwHQ7WMo ZoU0aUZHLpwyNIIh+46sLj2X4VFNFiX1YdyOAx1A2ez6UeZrGXbZfJ+poIpZVZFg7AgY 8yWQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from :dkim-signature; bh=3J/atxW6sPYnXqaJSp9SobS3v6A+MNQfu9eol6wNQ30=; b=g+v6VGxAymLBe85FOmG271UdfZa1feY/TPnHLKCaS3mIKBZwkWbYXfd3c0Gz6kZRqv +66Bysz///wAODyLIjoy6XoRsAmmvYAhUilI2U9LweycIa4GFmjeSvfU+nrV0Azdjgr8 JRtSoOS9d3KsKvb1ZcxpaRHtRpYaBVZ6texkxvd2qJh1SzvYaBbgqU67Wr1i/VrBconl pDM+7Ysz1nkN+63CEaOjpjWSPExDXcjrVBiaceI1PYuBo7ln8Rar5Rx70N0SEzd+dxWw G1igTk08pfmSsw71S0r9zmIR+BMn6nOSx/3TOe6HUJa8EYFo/GfyCA8z9OH9/1OAmwf/ YiWw== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@linaro.org header.s=google header.b=dpKvgMHT; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id s16si4072433iog.103.2021.04.01.03.44.08 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 01 Apr 2021 03:44:08 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=fail header.i=@linaro.org header.s=google header.b=dpKvgMHT; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:55810 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRuo3-0002Dc-VE for patch@linaro.org; Thu, 01 Apr 2021 06:44:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46670) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRulI-00073u-Vb for qemu-devel@nongnu.org; Thu, 01 Apr 2021 06:41:16 -0400 Received: from mail-ot1-x32e.google.com ([2607:f8b0:4864:20::32e]:38541) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lRulG-0002NU-TM for qemu-devel@nongnu.org; Thu, 01 Apr 2021 06:41:16 -0400 Received: by mail-ot1-x32e.google.com with SMTP id w21-20020a9d63950000b02901ce7b8c45b4so1704517otk.5 for ; Thu, 01 Apr 2021 03:41:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3J/atxW6sPYnXqaJSp9SobS3v6A+MNQfu9eol6wNQ30=; b=dpKvgMHTPSzyIKbJhiri2sFTjWxsjGFao1XKwc+U6eEhNSxfpoO7HhWzqAGch+d7TV /A9rsjXl4aHUH6N4zrjhhZof+Kd06pyFSVBpgNl+Lj/FmlZtMxEf5gMQtAKGPk8Jl0d8 NREr0VOGv4u830hUNq18l0SWNdEWal6zrLckKCUzNWlCCSqWgXvyZ9yCEVOoixnlLZQl ocG1uyHZv4AVKqJyHTjqKH38Oh2HsRdXp0UlxyqtNkM9XrtfoBf3EFQLlfapItdUJojs q3MLJIHDhZAAZkLPab0eGzG37trWEDyO5+sRrEUVIRn9Sir/g5nhLjwrWpnXdVKeANZI b/ug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3J/atxW6sPYnXqaJSp9SobS3v6A+MNQfu9eol6wNQ30=; b=BwapS4D2o5rQW+D3k+nB6GIzgp9vWCqe9iiyZZ4V9zWSLYbqP9HUxeo1gZ9AiBtOrv JQOl+kkZrJz7OHuYR1HcfdXvXs/RPNL+TM4Kr8jVUvqu7kI1A3s+BgO2FtqZqKjeEmr3 A+WZSlbqHw++8VWQw9ZuUGPq1ie+ikZHQA6l8jz0dIfq0ilTwYBNEbJu7fjuN9rN5c4j jWtfEl/idD6fkagmTQCYbiNOMBiiZnYqurRZ0s0MNc11UEa7QSZtqvsPvgzVHoREg1Rx lKQWNSkoQmtNIj8d/X6U0a1KNwxrpzmaY/++BUl5vH9491EnA5pQLTDYG+pA0MKad+0K 24vg== X-Gm-Message-State: AOAM532cRCv5EKH5lOtHmkvPuYyY4tTDFx1BavbTk9Kvdd7Ir5+jfIff zstAx8F/uVmxmYYBOxE+hvD8iPZT4xz1CKA= X-Received: by 2002:a9d:798a:: with SMTP id h10mr6297800otm.170.1617273673703; Thu, 01 Apr 2021 03:41:13 -0700 (PDT) Received: from localhost.localdomain ([147.75.106.138]) by smtp.gmail.com with ESMTPSA id a6sm1069066otq.79.2021.04.01.03.41.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Apr 2021 03:41:13 -0700 (PDT) From: Haibo Xu To: qemu-devel@nongnu.org, qemu-arm@nongnu.org Subject: [PATCH v2 2/6] target/arm/kvm: Add helper to detect el2 when using KVM Date: Thu, 1 Apr 2021 10:40:54 +0000 Message-Id: <65b8771bfecada08bf02c9cf87c2f0f9cdf943b3.1617272690.git.haibo.xu@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::32e; envelope-from=haibo.xu@linaro.org; helo=mail-ot1-x32e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, drjones@redhat.com, richard.henderson@linaro.org, abologna@redhat.com, Haibo Xu , philmd@redhat.com Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Haibo Xu --- target/arm/kvm64.c | 5 +++++ target/arm/kvm_arm.h | 13 +++++++++++++ 2 files changed, 18 insertions(+) -- 2.17.1 diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c index dff85f6db9..9cacaf2eb8 100644 --- a/target/arm/kvm64.c +++ b/target/arm/kvm64.c @@ -721,6 +721,11 @@ bool kvm_arm_steal_time_supported(void) return kvm_check_extension(kvm_state, KVM_CAP_STEAL_TIME); } +bool kvm_arm_el2_supported(void) +{ + return kvm_check_extension(kvm_state, KVM_CAP_ARM_EL2); +} + QEMU_BUILD_BUG_ON(KVM_ARM64_SVE_VQ_MIN != 1); void kvm_arm_sve_get_vls(CPUState *cs, unsigned long *map) diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index 34f8daa377..7d7fc7981b 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -285,6 +285,14 @@ void kvm_arm_steal_time_finalize(ARMCPU *cpu, Error **errp); */ bool kvm_arm_steal_time_supported(void); +/** + * kvm_arm_el2_supported: + * + * Returns: true if KVM can enable el2(nested virtualization) + * and false otherwise. + */ +bool kvm_arm_el2_supported(void); + /** * kvm_arm_aarch32_supported: * @@ -398,6 +406,11 @@ static inline bool kvm_arm_steal_time_supported(void) return false; } +static inline bool kvm_arm_el2_supported(void) +{ + return false; +} + /* * These functions should never actually be called without KVM support. */