From patchwork Wed Nov 3 06:25:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Reiji Watanabe X-Patchwork-Id: 12600209 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DFFF4C433FE for ; Wed, 3 Nov 2021 06:28:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0C2961177 for ; Wed, 3 Nov 2021 06:28:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231993AbhKCGa4 (ORCPT ); Wed, 3 Nov 2021 02:30:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231979AbhKCGax (ORCPT ); Wed, 3 Nov 2021 02:30:53 -0400 Received: from mail-pj1-x1049.google.com (mail-pj1-x1049.google.com [IPv6:2607:f8b0:4864:20::1049]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2DC55C061203 for ; Tue, 2 Nov 2021 23:28:18 -0700 (PDT) Received: by mail-pj1-x1049.google.com with SMTP id nv1-20020a17090b1b4100b001a04861d474so504636pjb.5 for ; Tue, 02 Nov 2021 23:28:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=Esyigd24VZzPo59EpEVlVJ1Fgs9fgw4MXQuf865VkCM=; b=F+nZxkxoiWIyyns/e6YvCovwVFgHwrPCf4W/omxTTZKZxPeieOLU5DGarIx6iQBnRA AwDOAjRjA/RTb348aoIOxmxsGOLFGENIy+5whxqZNRq2weovTQtDpvjwDDS/X/bVB5Oc 3Hksfyo6u3r8/r+WY1rwl3twBXaLZL30HbuxcePUi7SummLqW7NN8HBHD562Q92RPCB8 IYHOfGZtQruMMArAwh5rkXIi6EftMSA9wzKz2yuC9O/WL/hANK5OkQecfL7Yf7PH4cld rUB0NfkdHf/CKIXzlxHKTBdEQoiAN6AGqNtwOmqQ1pzZzKBCXDxuE5wGgmn1Fd2VVxyD oggw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=Esyigd24VZzPo59EpEVlVJ1Fgs9fgw4MXQuf865VkCM=; b=cw2W57ja9aahX7+eZr/vwNIXkiglIia+AZ19VS5nJ1XEV2MiLbiK0t+UANlxfSvUi9 aA7b1SW/FFW2K22c0PN1YDSWOHc75n4VvELBomeW6ybQ1iP5A0LZm6WNWvslcISgBEef wezO/ZSxyUiuHCjVMaxIAXPbVkw0GIm3C6HFqW9Fl0HTUEk+1M9oMX9oeI9HN2gS0Tm5 vC+MbVH0K29U4sO0Oha4PW7PRogLC08LIlBOYsf90mFfpK36j4LLdGL5Los/rRC35Rtl bf6XLvVB9w56yVZPTLTamLSuliTOUTA+hSvF74JR2KOzbWDRZxQW+OuhOLQHugFvrlI+ wTpA== X-Gm-Message-State: AOAM533pmA2JVGacq/DlpZqOu3M/AHeALUiCBGw9xfX5XoN3Y3ozZwxs pkqlvM4KME/foytJ+hKy3S2AwPzld7w= X-Google-Smtp-Source: ABdhPJy8zAxunqRArXzuJB5aGkOf3dPMAfmrH4e8aF0KnNXPQWSWpgHh4j0Xv7zu5BhBikqibRcVNu8SQBM= X-Received: from reiji-vws-sp.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3d59]) (user=reijiw job=sendgmr) by 2002:a05:6a00:244d:b0:44d:c279:5155 with SMTP id d13-20020a056a00244d00b0044dc2795155mr41787826pfj.0.1635920897698; Tue, 02 Nov 2021 23:28:17 -0700 (PDT) Date: Tue, 2 Nov 2021 23:25:06 -0700 In-Reply-To: <20211103062520.1445832-1-reijiw@google.com> Message-Id: <20211103062520.1445832-15-reijiw@google.com> Mime-Version: 1.0 References: <20211103062520.1445832-1-reijiw@google.com> X-Mailer: git-send-email 2.33.1.1089.g2158813163f-goog Subject: [RFC PATCH v2 14/28] KVM: arm64: Make ID_MMFR0_EL1 writable From: Reiji Watanabe To: Marc Zyngier , kvmarm@lists.cs.columbia.edu Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, James Morse , Alexandru Elisei , Suzuki K Poulose , Paolo Bonzini , Will Deacon , Andrew Jones , Peng Liang , Peter Shier , Ricardo Koller , Oliver Upton , Jing Zhang , Raghavendra Rao Anata , Reiji Watanabe Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This patch adds id_reg_info for ID_MMFR0_EL1 to make it writable by userspace. Signed-off-by: Reiji Watanabe --- arch/arm64/kvm/sys_regs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index f04067fdaa85..cfa3624ee081 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -840,6 +840,12 @@ static struct id_reg_info id_dfr1_el1_info = { .ftr_check_types = S_FCT(ID_DFR1_MTPMU_SHIFT, FCT_LOWER_SAFE), }; +static struct id_reg_info id_mmfr0_el1_info = { + .sys_reg = SYS_ID_MMFR0_EL1, + .ftr_check_types = S_FCT(ID_MMFR0_INNERSHR_SHIFT, FCT_LOWER_SAFE) | + S_FCT(ID_MMFR0_OUTERSHR_SHIFT, FCT_LOWER_SAFE), +}; + /* * An ID register that needs special handling to control the value for the * guest must have its own id_reg_info in id_reg_info_table. @@ -850,6 +856,7 @@ static struct id_reg_info id_dfr1_el1_info = { #define GET_ID_REG_INFO(id) (id_reg_info_table[IDREG_IDX(id)]) static struct id_reg_info *id_reg_info_table[KVM_ARM_ID_REG_MAX_NUM] = { [IDREG_IDX(SYS_ID_DFR0_EL1)] = &id_dfr0_el1_info, + [IDREG_IDX(SYS_ID_MMFR0_EL1)] = &id_mmfr0_el1_info, [IDREG_IDX(SYS_ID_DFR1_EL1)] = &id_dfr1_el1_info, [IDREG_IDX(SYS_ID_AA64PFR0_EL1)] = &id_aa64pfr0_el1_info, [IDREG_IDX(SYS_ID_AA64PFR1_EL1)] = &id_aa64pfr1_el1_info,