From patchwork Mon Mar 11 17:58:56 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason J. Herne" X-Patchwork-Id: 226628 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 085492C02A6 for ; Tue, 12 Mar 2013 05:00:20 +1100 (EST) Received: from localhost ([::1]:46818 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UF71G-0004ZK-B9 for incoming@patchwork.ozlabs.org; Mon, 11 Mar 2013 14:00:18 -0400 Received: from eggs.gnu.org ([208.118.235.92]:56521) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UF70O-0003ob-JC for qemu-devel@nongnu.org; Mon, 11 Mar 2013 13:59:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UF70I-00058f-8u for qemu-devel@nongnu.org; Mon, 11 Mar 2013 13:59:24 -0400 Received: from e37.co.us.ibm.com ([32.97.110.158]:55480) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UF70I-00058R-27 for qemu-devel@nongnu.org; Mon, 11 Mar 2013 13:59:18 -0400 Received: from /spool/local by e37.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 11 Mar 2013 11:59:16 -0600 Received: from d03dlp01.boulder.ibm.com (9.17.202.177) by e37.co.us.ibm.com (192.168.1.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 11 Mar 2013 11:59:14 -0600 Received: from d03relay01.boulder.ibm.com (d03relay01.boulder.ibm.com [9.17.195.226]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 5F1811FF0026 for ; Mon, 11 Mar 2013 11:54:16 -0600 (MDT) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d03relay01.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2BHx0L9103082 for ; Mon, 11 Mar 2013 11:59:01 -0600 Received: from d03av01.boulder.ibm.com (loopback [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r2BHwxB4012952 for ; Mon, 11 Mar 2013 11:59:00 -0600 Received: from jason-ThinkPad-W500.endicott.ibm.com (jason-thinkpad-w500.endicott.ibm.com [9.60.75.152] (may be forged)) by d03av01.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r2BHwuRU012636; Mon, 11 Mar 2013 11:58:59 -0600 From: "Jason J. Herne" To: agraf@suse.de, borntraeger@de.ibm.com, aliguori@us.ibm.com, mtosatti@redhat.com, qemu-devel@nongnu.org, R65777@freescale.com, jan.kiszka@siemens.com Date: Mon, 11 Mar 2013 13:58:56 -0400 Message-Id: <1363024736-2650-3-git-send-email-jjherne@us.ibm.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1363024736-2650-1-git-send-email-jjherne@us.ibm.com> References: <1363024736-2650-1-git-send-email-jjherne@us.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13031117-7408-0000-0000-00000DB1840B X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 32.97.110.158 Cc: "Jason J. Herne" Subject: [Qemu-devel] [PATCH 2/2 v3] [S390-KVM] Regsync: Utilize selective runtime reg sync for hot code paths X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Make use of new kvm_s390_get_registers_partial() for kvm_handle_css_inst() and handle_hypercall() since they only need registers from the partial set and they are called quite frequently. Signed-off-by: Jason J. Herne --- target-s390x/kvm.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 934757e..36861aa 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -468,12 +468,16 @@ static int kvm_handle_css_inst(S390CPU *cpu, struct kvm_run *run, int r = 0; int no_cc = 0; CPUS390XState *env = &cpu->env; + CPUState *cs = ENV_GET_CPU(env); if (ipa0 != 0xb2) { /* Not handled for now. */ return -1; } - cpu_synchronize_state(env); + + kvm_s390_get_registers_partial(cs); + cs->kvm_vcpu_dirty = true; + switch (ipa1) { case PRIV_XSCH: r = ioinst_handle_xsch(env, env->regs[1]); @@ -604,7 +608,10 @@ static int handle_priv(S390CPU *cpu, struct kvm_run *run, static int handle_hypercall(CPUS390XState *env, struct kvm_run *run) { - cpu_synchronize_state(env); + CPUState *cs = ENV_GET_CPU(env); + + kvm_s390_get_registers_partial(cs); + cs->kvm_vcpu_dirty = true; env->regs[2] = s390_virtio_hypercall(env); return 0;