From patchwork Tue May 21 06:17:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Wanpeng Li X-Patchwork-Id: 1102520 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="iAILzZqN"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 457QYx5ZWgz9s1c for ; Tue, 21 May 2019 16:18:25 +1000 (AEST) Received: from localhost ([127.0.0.1]:47152 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSy6P-0002vr-RF for incoming@patchwork.ozlabs.org; Tue, 21 May 2019 02:18:21 -0400 Received: from eggs.gnu.org ([209.51.188.92]:46771) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSy5y-0002vY-GN for qemu-devel@nongnu.org; Tue, 21 May 2019 02:17:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hSy5x-00013a-HV for qemu-devel@nongnu.org; Tue, 21 May 2019 02:17:54 -0400 Received: from mail-pf1-x443.google.com ([2607:f8b0:4864:20::443]:44550) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hSy5x-00012l-BX for qemu-devel@nongnu.org; Tue, 21 May 2019 02:17:53 -0400 Received: by mail-pf1-x443.google.com with SMTP id g9so8477506pfo.11 for ; Mon, 20 May 2019 23:17:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=J0uuieNJWIEqFucVVL6HHob/1V+xJ9X3pNwzM9VDJZ0=; b=iAILzZqNIPswUqlH8JOZ7+vNDvmfXLVoXJIxX2pMr6K+W+bYWxejR2GHSWRq5E47A9 +VOfS8YbrQHfhFr7ihHe+UDBs8GsWPVm81gOqbikTXUXTinXaK5hYC9uAXP7euPrkAfO W3z6pM1PlpsNwjc9CsNyroG7N/i0J/9W/pNuTtwQQA+p2+FPHbalQl4hDooMHBBpiEN5 2kicJrYTxu1HzkN0+pbwtNM4BG2RgcgDdPdSPEQ4ZAXh+ARZzdnmstNsaTbUrM8BeTh3 EawOZc3DzJIcULJcNysgL7W1kitDu+KytOK29j4bZlaQ3PjMG64tGQ/8f/P6Cc5JOZOR NJ1Q== 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:mime-version :content-transfer-encoding; bh=J0uuieNJWIEqFucVVL6HHob/1V+xJ9X3pNwzM9VDJZ0=; b=EY6A81G1lEKnywancFNMjwdEl8mvpQdL5yb9+HWavO5GgM7W0XG9/SYF+c1nO0tJx2 YGqhhSiBrfMEY3Rdo19rmFajD7H1glfF0mR7S0M3YqbGQm75E/v/YSfuK7bMKvxof1B2 Qq/PEoRSYrukUkxMVk4iKOb4Q1tkHMNxvl7HYfECa3LaA/cTyU+JkJjjWxDOJP075GlL 4MT6f0wxOUfQD33kP8Z+hgCRahU8RpyFRuiEEKMtBxvtnEsemMzNp4fp2CfMVB1IyvIB C86EJHs+wsOSBSSX5bGnmWDNo18lcO+QPFZ5kKkaL6KjZlwZTNpNiZkuf1o1LqL2WVel Zz3Q== X-Gm-Message-State: APjAAAX+WF5JWBBwC3B1nwRxQGDm/HLvqf18PSwYd1A0i9AoHHkpxgam YBRtIfBLCDQev+5+KCa5Wk1qrQCU X-Google-Smtp-Source: APXvYqw2zFKfTVHfge7XSBqtWwR0RD497wZjCcT/BNKF+0TPFWkQe97zoVI6lF5pwDcUzRZL6LH/JQ== X-Received: by 2002:a63:1460:: with SMTP id 32mr80416982pgu.319.1558419471484; Mon, 20 May 2019 23:17:51 -0700 (PDT) Received: from localhost.localdomain ([203.205.141.123]) by smtp.googlemail.com with ESMTPSA id o66sm23112295pfb.184.2019.05.20.23.17.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 20 May 2019 23:17:51 -0700 (PDT) From: Wanpeng Li X-Google-Original-From: Wanpeng Li To: qemu-devel@nongnu.org, kvm@vger.kernel.org Date: Tue, 21 May 2019 14:17:47 +0800 Message-Id: <1558419467-7155-1-git-send-email-wanpengli@tencent.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::443 Subject: [Qemu-devel] [PATCH] kvm: support guest access CORE cstate X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Eduardo Habkost , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Wanpeng Li Allow guest reads CORE cstate when exposing host CPU power management capabilities to the guest. PKG cstate is restricted to avoid a guest to get the whole package information in multi-tenant scenario. Cc: Eduardo Habkost Cc: Paolo Bonzini Cc: Radim Krčmář Signed-off-by: Wanpeng Li --- linux-headers/linux/kvm.h | 4 +++- target/i386/kvm.c | 3 ++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index b53ee59..d648fde 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -696,9 +696,11 @@ struct kvm_ioeventfd { #define KVM_X86_DISABLE_EXITS_MWAIT (1 << 0) #define KVM_X86_DISABLE_EXITS_HLT (1 << 1) #define KVM_X86_DISABLE_EXITS_PAUSE (1 << 2) +#define KVM_X86_DISABLE_EXITS_CSTATE (1 << 3) #define KVM_X86_DISABLE_VALID_EXITS (KVM_X86_DISABLE_EXITS_MWAIT | \ KVM_X86_DISABLE_EXITS_HLT | \ - KVM_X86_DISABLE_EXITS_PAUSE) + KVM_X86_DISABLE_EXITS_PAUSE | \ + KVM_X86_DISABLE_EXITS_CSTATE) /* for KVM_ENABLE_CAP */ struct kvm_enable_cap { diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 3b29ce5..49a0cc1 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1645,7 +1645,8 @@ int kvm_arch_init(MachineState *ms, KVMState *s) if (disable_exits) { disable_exits &= (KVM_X86_DISABLE_EXITS_MWAIT | KVM_X86_DISABLE_EXITS_HLT | - KVM_X86_DISABLE_EXITS_PAUSE); + KVM_X86_DISABLE_EXITS_PAUSE | + KVM_X86_DISABLE_EXITS_CSTATE); } ret = kvm_vm_enable_cap(s, KVM_CAP_X86_DISABLE_EXITS, 0,