Received: by 10.223.185.116 with SMTP id b49csp60653wrg; Thu, 8 Mar 2018 12:54:00 -0800 (PST) X-Google-Smtp-Source: AG47ELsenceaUzm9/R9VfTKktPH6XUKUT5aHgKD9dPtAqW25HNFbTLI5ajBaHtChAGrlGn0V51tR X-Received: by 10.98.139.18 with SMTP id j18mr27702428pfe.179.1520542440061; Thu, 08 Mar 2018 12:54:00 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1520542440; cv=none; d=google.com; s=arc-20160816; b=Sz+Bc86tmN8OmMwKmyzS3zvt+1uG7VMnfhlhDUj0Sbz3gyQgDc8agCj/5XpH64ZC2W bN9+H1AAgmC8Xogsd7nT40oe+E/vDuS+JX9cWFZA7jt6eXYuecce/6HrCa6VzzAyz24+ qkIISNw29skOELdVYBQsNc6Q3va+I66d+npLAtmOwcA+3+6IlxM/H/Aiks6j3jmMnGLG Ukl/PGNkmqmK9A/uK6L/yBgiD6qWqzjmuODG1tsHPthtv5bEn3twm0ChbtrXM+rCvwSw RdLpBaNYIGVVXQzAnZqdUriObau/kHwwAZH0S4InIrT/XuQDp4NrrJIyvhPFUW5JjVkk U/8w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-transfer-encoding :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=N5lemrPtHkJMpEy/hxozw7f0fCr8fyrpdCy08Dc3NE8=; b=RHjb9O+bg7vZSZvPJsoyxSiOy4waphy6Nrh2H+6d2SUVxr/wIcr/C0w069zsurUtrK kGNIylvkxF66Z2FuTr8hBiW/SjJuYBTfq58cXOYTgYX+iZpcxpudsHEShtc11SdKPWhP d8cizJar2P42/8YIBzlfcTKw+njsgx0b8ya7clOXrgFeFHgLwRcXzkqCRJ/5WgLdGFTw 852y8RJbr0sOvXWR2s+qytOVBpiMvSY382zSi9s3GGLEI/VK96NBWHSPzRt6+mR549Li SKdBdwpiuMAmBpQ1KUERoSi6ugSmcOxldUNaH3zt/zTcG1YFzZbgeo8SRFCRGX1qNhpK Kqiw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h6-v6si13734022pls.39.2018.03.08.12.53.45; Thu, 08 Mar 2018 12:54:00 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751306AbeCHUw4 (ORCPT + 99 others); Thu, 8 Mar 2018 15:52:56 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:36554 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751185AbeCHUwz (ORCPT ); Thu, 8 Mar 2018 15:52:55 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B14C7406E8C3; Thu, 8 Mar 2018 20:52:54 +0000 (UTC) Received: from flask (unknown [10.43.2.80]) by smtp.corp.redhat.com (Postfix) with SMTP id EECED2166BAE; Thu, 8 Mar 2018 20:52:52 +0000 (UTC) Received: by flask (sSMTP sendmail emulation); Thu, 08 Mar 2018 21:52:14 +0100 Date: Thu, 8 Mar 2018 21:52:14 +0100 From: Radim =?utf-8?B?S3LEjW3DocWZ?= To: Wanpeng Li Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Paolo Bonzini Subject: Re: [PATCH 3/3] KVM: X86: Provides userspace with a capability to not intercept PAUSE Message-ID: <20180308205213.GL12290@flask> References: <1519897782-8124-1-git-send-email-wanpengli@tencent.com> <1519897782-8124-3-git-send-email-wanpengli@tencent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1519897782-8124-3-git-send-email-wanpengli@tencent.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 08 Mar 2018 20:52:54 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 08 Mar 2018 20:52:54 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'rkrcmar@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2018-03-01 17:49+0800, Wanpeng Li: > From: Wanpeng Li > > Allow to disable pause loop exit/pause filtering on a per VM basis. > > If some VMs have dedicated host CPUs, they won't be negatively affected > due to needlessly intercepted PAUSE instructions. > > Thanks to Jan H. Schönherr's initial patch. Please Cc him on v2.