From patchwork Thu Jun 15 10:52:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 776217 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wpL694slBz9s2G for ; Thu, 15 Jun 2017 20:56:33 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="pgEcgWpJ"; dkim-atps=neutral Received: from localhost ([::1]:53140 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dLSRz-00020O-AY for incoming@patchwork.ozlabs.org; Thu, 15 Jun 2017 06:56:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40883) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dLSP5-0008Fe-Ig for qemu-devel@nongnu.org; Thu, 15 Jun 2017 06:53:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dLSP3-0007Zg-N4 for qemu-devel@nongnu.org; Thu, 15 Jun 2017 06:53:31 -0400 Received: from mail-wr0-x244.google.com ([2a00:1450:400c:c0c::244]:33455) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dLSP3-0007ZH-HS for qemu-devel@nongnu.org; Thu, 15 Jun 2017 06:53:29 -0400 Received: by mail-wr0-x244.google.com with SMTP id x23so2767861wrb.0 for ; Thu, 15 Jun 2017 03:53:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=lBd8+Auif0cVBpFOyLiGrnOvlYa6dByMJCTKPD7ryQY=; b=pgEcgWpJzXnvypTUsNHCwrNKiX2t0O876iDmFzNPZzIibfAV/B8qSFdFhdCnXdgY5L eO5XIxtrrOPvkmYYmoOmpzV5q+eUjVdUVK1ydn+y/T+BT581ffwmt4pKT3zjVUJHVHwL cGcFflYGWa1oBOq/xckF5qP0RDSkDGgxalKqUa/VwG3Cy99vFGORPNwSRecXSJy3SNpd oeFgLpNPk4U0cjl/w1fUwbQPdZDcNLKHCRmNH8p9ScxrCO7lLCmIwtmgVsHq4o7ib3b3 byCfjmK03f8jFKmW0Ap5HaJJx6by/0p2iFBmumenCJ+kVeILH4hwgzunoJovY8Gahx41 T8sA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=lBd8+Auif0cVBpFOyLiGrnOvlYa6dByMJCTKPD7ryQY=; b=eHSvKthJAoU9WwY4YgNDZD9PXUoOZ2vGbjHaafJ3tjwhSFDYc72PMn2mJteRGb7cyg YKKxzcILRBk8PJ/Ai9lEA0VTHX1kOvyH8QwPcggXR1Ntr9R12dbQah0X/GJelemMxtAT OktjMR+j1aj7Gv/PIkFefwMD8dcAanYYEprkFY/VMXHecg4Bau5NEuR5gX8fO22VVf1O IfG2hgCmyV7yiYzdz7J/Y5p8x1LXyhGYH+zUd8hGMEsq9WGoSzdVbpBXV7zr6uC1NzY7 gfGdllqONkDqmMRyCv8dc/tk38Mjhs5MZnGnDo7Z2idbrfNBYXd65GHnrZPtd47K2Nrt /LTg== X-Gm-Message-State: AKS2vOxGDk5DYt7X4PzDuFXRYdEG7K9V26PYtw01oWpTRCMoczh26XgT zOxkoRBb+mmhYJXENXc= X-Received: by 10.28.136.197 with SMTP id k188mr3141385wmd.14.1497524008326; Thu, 15 Jun 2017 03:53:28 -0700 (PDT) Received: from 640k.lan (94-39-191-51.adsl-ull.clienti.tiscali.it. [94.39.191.51]) by smtp.gmail.com with ESMTPSA id f21sm3258597wra.5.2017.06.15.03.53.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 15 Jun 2017 03:53:27 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Thu, 15 Jun 2017 12:52:36 +0200 Message-Id: <1497523981-38449-17-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1497523981-38449-1-git-send-email-pbonzini@redhat.com> References: <1497523981-38449-1-git-send-email-pbonzini@redhat.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:400c:c0c::244 Subject: [Qemu-devel] [PULL 16/41] kvm-all: make async_safe_run_on_cpu safe on kvm too 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: Roman Kagan Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Roman Kagan Wrap the bulk of kvm_cpu_exec with cpu_exec_start/end, so that kvm version can also enjoy performing certain operations while all vCPUs are quiescent. Signed-off-by: Roman Kagan Message-Id: <20170606181948.16238-15-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini --- kvm-all.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kvm-all.c b/kvm-all.c index ab8262f..98ad151 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -1977,6 +1977,7 @@ int kvm_cpu_exec(CPUState *cpu) } qemu_mutex_unlock_iothread(); + cpu_exec_start(cpu); do { MemTxAttrs attrs; @@ -2106,6 +2107,7 @@ int kvm_cpu_exec(CPUState *cpu) } } while (ret == 0); + cpu_exec_end(cpu); qemu_mutex_lock_iothread(); if (ret < 0) {