From patchwork Sun Jul 25 19:27:56 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Lo=C3=AFc_Minier?= X-Patchwork-Id: 59878 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 47CD6B6F07 for ; Mon, 26 Jul 2010 05:30:47 +1000 (EST) Received: from localhost ([127.0.0.1]:57773 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Od6uK-0003Bp-7U for incoming@patchwork.ozlabs.org; Sun, 25 Jul 2010 15:30:44 -0400 Received: from [140.186.70.92] (port=54689 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Od6sy-0002fo-NX for qemu-devel@nongnu.org; Sun, 25 Jul 2010 15:29:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Od6sw-0003Pl-9k for qemu-devel@nongnu.org; Sun, 25 Jul 2010 15:29:20 -0400 Received: from duck.dooz.org ([194.146.227.125]:59713) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Od6sw-0003PW-5b for qemu-devel@nongnu.org; Sun, 25 Jul 2010 15:29:18 -0400 Received: from bee.dooz.org (serris.dooz.org [88.166.229.232]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by duck.dooz.org (Postfix) with ESMTP id 0A678C809C; Sun, 25 Jul 2010 21:29:16 +0200 (CEST) Received: by bee.dooz.org (Postfix, from userid 1000) id D8F95EFE; Sun, 25 Jul 2010 21:29:14 +0200 (CEST) From: =?UTF-8?q?Lo=C3=AFc=20Minier?= To: qemu-devel@nongnu.org Date: Sun, 25 Jul 2010 21:27:56 +0200 Message-Id: <1280086076-20649-1-git-send-email-loic.minier@linaro.org> X-Mailer: git-send-email 1.7.1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) Cc: =?UTF-8?q?Lo=C3=AFc=20Minier?= , Arnd Bergmann Subject: [Qemu-devel] [PATCH] Ignore writes of perf reg (cp15 with crm == 12) X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org On ARMv7, ignore writes to cp15 with crm == 12; these are to setup perf counters which we don't have. --- target-arm/helper.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/target-arm/helper.c b/target-arm/helper.c index 2dd64d9..865829f 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -1457,6 +1457,8 @@ void HELPER(set_cp15)(CPUState *env, uint32_t insn, uint32_t val) } break; case 9: + if (arm_feature(env, ARM_FEATURE_V7) && crm == 12) + break; /* Perf counters. */ if (arm_feature(env, ARM_FEATURE_OMAPCP)) break; switch (crm) {