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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9B400C4321E for ; Wed, 30 Nov 2022 23:37:41 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4NMwc41xFVz3fJM for ; Thu, 1 Dec 2022 10:37:40 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20210112 header.b=GVS6tfQs; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=flex--seanjc.bounces.google.com (client-ip=2607:f8b0:4864:20::b4a; helo=mail-yb1-xb4a.google.com; envelope-from=35ekhywykdowgsobxquccuzs.qcazwbilddq-rsjzwghg.cnzopg.cfu@flex--seanjc.bounces.google.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20210112 header.b=GVS6tfQs; dkim-atps=neutral Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4NMw0l6f4Tz3bhX for ; Thu, 1 Dec 2022 10:10:31 +1100 (AEDT) Received: by mail-yb1-xb4a.google.com with SMTP id t5-20020a5b07c5000000b006dfa2102debso17727619ybq.4 for ; Wed, 30 Nov 2022 15:10:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=syK6eF0z1YIhw5KnDfEJ/sqHR3QdYzGhfq3h/5i5Sas=; b=GVS6tfQs69HM9iPg5RyanavfgqTtstL/hP2NZwyz6ZiOn7sQ0OggFONinN3Xpq5A5O ROAGkLrScqRoWmoumJCapQkQLkR93EZiZmJgM/igbQR0yiEQhTM5NlbokX/zSqXnB7+r NTk4xoTIRJmdEYgV5XTVp3WbKa8QFND0VjYsfazhzfL9lIlQKqNHJYrNBIvwG1lwEaBo U+Ok61fL2GtL8yDcgFKd5TgqnT7w/4A4Fxq0CZ9SiNKAiH0owEiGaxOBRpIJfpm0capw Q57SZ4+/8uPzzEqCtGgs63hTCqUtPFogvCulI6jofLJAraG2Zyu8sPd3r85eKSZc1cYA LlTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=syK6eF0z1YIhw5KnDfEJ/sqHR3QdYzGhfq3h/5i5Sas=; b=aogASMMShoZmKkibc8I1/irkV8O62RqsNFvkQHWxj2jchnOc1/hpvS/H3w9YM/Lo4z pvcV291KtLWlkNvhfOMutSMeDumFSgGbrx1mCUX4rgA45A50eT40nQMkfsmlIxdUH2sc LuEkuHu7VXUlpkblVUJR0ZAyXvTZFEEURDjqPAI+ZvBUr51AgGSiv5jbnkC3tic4fybj Kx39DtW3+ZVvsy1HFPuUh/aZu5brWPk5q145Cfio12h0vpl2Gz/+WYFJMVx7lhqDv4mV +o4GzDEiUxg28n/sbY6skAHHyW4nLLvOC5tm5J5TGSetmkCCnbL2WsndOtb/zwTr3GX+ Pb6w== X-Gm-Message-State: ANoB5pnriQSw2H8Ec4deIg/S2y+KH3PJ32FNZ7ec4CCUKXJE/61q8clN ipe+l3zOL6pVKtCkMaF5SfYetPx/p4I= X-Google-Smtp-Source: AA0mqf6GlYmz6ao1Ocazy6XnieuesyYU9e/N0B6T5bGw3DwYIfX3lPKm+B7r5ybTp9p3YaVUKLjnuY7j4Vk= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:690c:e8b:b0:3c9:bdbf:444d with SMTP id cq11-20020a05690c0e8b00b003c9bdbf444dmr15670072ywb.56.1669849829390; Wed, 30 Nov 2022 15:10:29 -0800 (PST) Date: Wed, 30 Nov 2022 23:09:14 +0000 In-Reply-To: <20221130230934.1014142-1-seanjc@google.com> Mime-Version: 1.0 References: <20221130230934.1014142-1-seanjc@google.com> X-Mailer: git-send-email 2.38.1.584.g0f3c55d4c2-goog Message-ID: <20221130230934.1014142-31-seanjc@google.com> Subject: [PATCH v2 30/50] KVM: VMX: Make VMCS configuration/capabilities structs read-only after init From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Matthew Rosato , Eric Farman , Sean Christopherson , Vitaly Kuznetsov , David Woodhouse , Paul Durrant Content-Type: text/plain; charset="UTF-8" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Cc: kvm@vger.kernel.org, David Hildenbrand , Atish Patra , linux-kernel@vger.kernel.org, Kai Huang , linux-riscv@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-s390@vger.kernel.org, Chao Gao , Suzuki K Poulose , Yuan Yao , kvmarm@lists.linux.dev, Thomas Gleixner , Alexandru Elisei , linux-arm-kernel@lists.infradead.org, Isaku Yamahata , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Fabiano Rosas , Cornelia Huck , linux-mips@vger.kernel.org, Oliver Upton , James Morse , kvm-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Tag vmcs_config and vmx_capability structs as __init, the canonical configuration is generated during hardware_setup() and must never be modified after that point. Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/capabilities.h | 4 ++-- arch/x86/kvm/vmx/vmx.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index cd2ac9536c99..45162c1bcd8f 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -66,13 +66,13 @@ struct vmcs_config { u64 misc; struct nested_vmx_msrs nested; }; -extern struct vmcs_config vmcs_config; +extern struct vmcs_config vmcs_config __ro_after_init; struct vmx_capability { u32 ept; u32 vpid; }; -extern struct vmx_capability vmx_capability; +extern struct vmx_capability vmx_capability __ro_after_init; static inline bool cpu_has_vmx_basic_inout(void) { diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 76185a7a7ded..654d81f781da 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -488,8 +488,8 @@ static DEFINE_PER_CPU(struct list_head, loaded_vmcss_on_cpu); static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS); static DEFINE_SPINLOCK(vmx_vpid_lock); -struct vmcs_config vmcs_config; -struct vmx_capability vmx_capability; +struct vmcs_config vmcs_config __ro_after_init; +struct vmx_capability vmx_capability __ro_after_init; #define VMX_SEGMENT_FIELD(seg) \ [VCPU_SREG_##seg] = { \ -- 2.38.1.584.g0f3c55d4c2-goog