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[2620:137:e000::1:20]) by mx.google.com with ESMTP id 26-20020a170906025a00b0088e2f1b2df2si11127353ejl.376.2023.02.10.16.38.50; Fri, 10 Feb 2023 16:39:43 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20210112 header.b=HtlUvAle; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229586AbjBKAfk (ORCPT + 99 others); Fri, 10 Feb 2023 19:35:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229473AbjBKAfi (ORCPT ); Fri, 10 Feb 2023 19:35:38 -0500 Received: from mail-pj1-x104a.google.com (mail-pj1-x104a.google.com [IPv6:2607:f8b0:4864:20::104a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2659A1ADC5 for ; Fri, 10 Feb 2023 16:35:38 -0800 (PST) Received: by mail-pj1-x104a.google.com with SMTP id nn5-20020a17090b38c500b0023391b53fd5so1967248pjb.2 for ; Fri, 10 Feb 2023 16:35:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:reply-to:from:to:cc :subject:date:message-id:reply-to; bh=Kx7i8JKzvZYRlaJwr/BZyRfMLt7H5oqW+SIrl30Jzpk=; b=HtlUvAlewBQgavZZheWnkdoCCzuAYbogFesYIG8C3zqmL/1Sruqpqwnc5kiWtAk0q1 YhwDbhMWEqnuBBkr7D9zPgdTratdd4/eCOgnkt5IRgarN6qCAthL1vLb49mSqqSlaFmD oscifg8ZoFvN35nQfTRTgW+zfg5ucuFlDcwV/9gr/1zHtk0B7w8pBKDVJBWDi5O2EpGG +N2EEN1j5m7HDZ7qymrxhcYyTaCB4C8d31eFAZrWv/ZJ/k5r/LV72RgBcI/ZW2Wdc3BL iAb2E0OCOjE5mzOoGr2C8ka/76Q5yiPw3ijRigR9cBdTHj5Hi4d8LV28go+MlmKVuOtr 8yIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:reply-to :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Kx7i8JKzvZYRlaJwr/BZyRfMLt7H5oqW+SIrl30Jzpk=; b=mCO6rvPLq7ZkRvBIWxByO4I1IuqKpPrCjV/h5MT+gtPQXfO8DCVw2Dxibsi98jGSuB v2SD3cCZ4XM2X2O3bhFR20YY487adenHNaR2aXcegSGCIsWpuUJKP3RBaFPY0GtuUqVl ysu2Xg+qWctrYEj7CvTUr98HoMCELqMUq4Ln4xLvw3lPdPOMm1myrkAMd/we2cvk2JMy mZ3AiSnkOeA79O99gZUvKRnXOVTWe8YtRTTyXlHnFPebluhu2yp70YGsheBGmvLLuCh2 +7xS8nWEluVQKCQ/LVj3aiW3Vu9mIJjkbVOxMUF15zwdL+CKAd/POQjbp2owkebwwW4p DlLQ== X-Gm-Message-State: AO0yUKUNaH8WfwaVVRT30B/jGm3iKsONhA1NiZ+07d7v7AEuguVHCQa+ b9TvS/u/F2WAdOEqHRSXo+Cnn0CR50Y= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:d2c3:b0:199:3a88:9a18 with SMTP id n3-20020a170902d2c300b001993a889a18mr3380694plc.10.1676075737537; Fri, 10 Feb 2023 16:35:37 -0800 (PST) Reply-To: Sean Christopherson Date: Sat, 11 Feb 2023 00:35:31 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.39.1.581.gbfd45094c4-goog Message-ID: <20230211003534.564198-1-seanjc@google.com> Subject: [PATCH v2 0/3] KVM: VMX: Stub out enable_evmcs static key From: Sean Christopherson To: Vitaly Kuznetsov , Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1757493050810155631?= X-GMAIL-MSGID: =?utf-8?q?1757493050810155631?= Stub out and rename the eVMCS static key when CONFIG_HYPERV=n. gcc (as of gcc-12) isn't clever enough to elide the nop placeholder when there's no code guarded by a static branch. With gcc-12, because of the vast number of VMCS accesses, eliminating the nops reduces the size of kvm-intel.ko by ~7.5% (200KiB). Please holler if you would rather patch 3 be squashed into patch 2, i.e. add the wrapper and rename the key in one go. I split them because the combined changelog was getting into "here's a list of changes" territory. Patch 1 is tangentially related cleanup. Applies on `git@github.com:kvm-x86/linux.git vmx`. v2: - Collect reviews. [Vitaly] - Rename wrapper. [Vitaly, Paolo] - Rename key too. v1: https://lore.kernel.org/all/20230208205430.1424667-1-seanjc@google.com Sean Christopherson (3): KVM: nVMX: Move EVMCS1_SUPPORT_* macros to hyperv.c KVM: VMX: Stub out enable_evmcs static key for CONFIG_HYPERV=n KVM: VMX: Rename "KVM is using eVMCS" static key to match its wrapper arch/x86/kvm/vmx/hyperv.c | 107 +++++++++++++++++++++++++++++++++- arch/x86/kvm/vmx/hyperv.h | 115 +++---------------------------------- arch/x86/kvm/vmx/vmx.c | 17 +++--- arch/x86/kvm/vmx/vmx_ops.h | 22 +++---- 4 files changed, 133 insertions(+), 128 deletions(-) base-commit: 93827a0a36396f2fd6368a54a020f420c8916e9b