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 EB72DC05027 for ; Wed, 8 Feb 2023 20:54:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230062AbjBHUyg (ORCPT ); Wed, 8 Feb 2023 15:54:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231544AbjBHUyd (ORCPT ); Wed, 8 Feb 2023 15:54:33 -0500 Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D13C413D68 for ; Wed, 8 Feb 2023 12:54:32 -0800 (PST) Received: by mail-pg1-x549.google.com with SMTP id 63-20020a630542000000b004fb3982dd50so75042pgf.8 for ; Wed, 08 Feb 2023 12:54:32 -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=6ihU1H4kZ9BjK5BcY5kQ6fGB4N5NmwmZSluNBW8G1cI=; b=mZ8IRkuppbwH/Q7ZOij1/LaDs10DIEKxqqKtIBPgb20l6Ct5FzmeWBp01YIQjZVf81 Kr4ZdZYTre23RMKGNagFEoRP131lzyBy7eHruK25mWjK13ejGNFegVNjB3pcR5ICzL38 zfbt8w/3J8M+VXDQpJv2jddRyKcMBJ7mKp9+/H0cE350oCVKoHMYyi/WN+P5szigzExc GA3CdT5dsF52+bmlYcRtSHWWPghOIflLUQMdZyF87Boy1dmYheS1t+IGW15z+v4ZcNEa wWrRCm+vw6KbYs0kTZtujmspAzB4DBBenjOryG3gIbQYfQdQDsG5kXetcyzOMj13b7X0 xfZA== 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=6ihU1H4kZ9BjK5BcY5kQ6fGB4N5NmwmZSluNBW8G1cI=; b=WJYf0CNFISne7Mvdn76G5wuX15V4JDM6KhSsy+uK4i9bFPBZoEOMilO7VpK3A5nQgu juBK1gg7t5ouSPfxEHHUWmntDAqEoQxprN1HXhng2AeECRHK8aRIorkDoDy7Ik67zJpF Ro4F+8sgexFqbKihhc3+UUJEx8Toe7EcBfNEs0GfdZpmFrbACWnYww5rH1jP0Ru5AQ5P cUc4n4VkxrhxfurVtxw0eOyWC+KZZHn/GQRsCHsxFVHsAyOiD8MZFq7rLWDw52hByQIj qsMN+cDcOX//HxYB+W+qeJYp2fIglJi31g1RntaipTkzorggKiy1ZGo0ymIR0YP2XQhO NXIA== X-Gm-Message-State: AO0yUKWYR3EK8pCfSZ2AST4j/8G1V56FPediM1SmUiVa2hmYFTh+qUqv CBPjZMeArz0yXXT3BlX+F70F2phYGU8= X-Google-Smtp-Source: AK7set+WzLnQGVkN6I5+PWOMSY+SQMCEZJbhZPXo65r0/yDnDBzQ8PwacG5KSOG6Z2oourUgRxDCL/0DV7g= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:db0d:b0:199:4e77:7fa8 with SMTP id m13-20020a170902db0d00b001994e777fa8mr774950plx.4.1675889672359; Wed, 08 Feb 2023 12:54:32 -0800 (PST) Reply-To: Sean Christopherson Date: Wed, 8 Feb 2023 20:54:28 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.39.1.519.gcb327c4b5f-goog Message-ID: <20230208205430.1424667-1-seanjc@google.com> Subject: [PATCH 0/2] KVM: VMX: Stub out enable_evmcs static key From: Sean Christopherson To: Vitaly Kuznetsov , Sean Christopherson , Paolo Bonzini , Nathan Chancellor , Nick Desaulniers Cc: Tom Rix , kvm@vger.kernel.org, llvm@lists.linux.dev, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Stub out the enable_evmcs static key for 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). Patch 1 is tangentially related cleanup. Applies on `git@github.com:kvm-x86/linux.git vmx`. Sean Christopherson (2): KVM: nVMX: Move EVMCS1_SUPPORT_* macros to hyperv.c KVM: VMX: Stub out enable_evmcs static key for CONFIG_HYPERV=n arch/x86/kvm/vmx/hyperv.c | 107 +++++++++++++++++++++++++++++++++- arch/x86/kvm/vmx/hyperv.h | 115 +++---------------------------------- arch/x86/kvm/vmx/vmx.c | 15 +++-- arch/x86/kvm/vmx/vmx_ops.h | 22 +++---- 4 files changed, 132 insertions(+), 127 deletions(-) base-commit: 93827a0a36396f2fd6368a54a020f420c8916e9b -- 2.39.1.519.gcb327c4b5f-goog