From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F389C3A59C for ; Fri, 16 Aug 2019 08:49:05 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7598A2063F for ; Fri, 16 Aug 2019 08:49:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7598A2063F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hyXux-0000Jz-W6 for qemu-devel@archiver.kernel.org; Fri, 16 Aug 2019 04:49:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52030) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hyXtI-00073j-Al for qemu-devel@nongnu.org; Fri, 16 Aug 2019 04:47:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hyXtH-0003vu-DJ for qemu-devel@nongnu.org; Fri, 16 Aug 2019 04:47:20 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45466) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hyXtH-0003vK-7y; Fri, 16 Aug 2019 04:47:19 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 79D7C30842A9; Fri, 16 Aug 2019 08:47:18 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-249.ams2.redhat.com [10.36.116.249]) by smtp.corp.redhat.com (Postfix) with ESMTP id 812B343FE2; Fri, 16 Aug 2019 08:47:16 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Fri, 16 Aug 2019 10:47:04 +0200 Message-Id: <20190816084708.602-3-david@redhat.com> In-Reply-To: <20190816084708.602-1-david@redhat.com> References: <20190816084708.602-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Fri, 16 Aug 2019 08:47:18 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v3 2/6] s390x/mmu: ASC selection in s390_cpu_get_phys_page_debug() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , Janosch Frank , David Hildenbrand , Cornelia Huck , Halil Pasic , Christian Borntraeger , qemu-s390x@nongnu.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Let's select the ASC before calling the function. This is a prepararion to remove the ASC magic depending on the access mode from mmu_translate. There is currently no way to distinguish if we have code or data access. For now, we were using code access, because especially when debugging wit= h the gdbstub, we want to read and disassemble what we single-step. Note: KVM guest can now no longer be crashed using qmp/hmp/gdbstub if the= y happen to be in AR mode. Reviewed-by: Thomas Huth Reviewed-by: Cornelia Huck Signed-off-by: David Hildenbrand --- target/s390x/helper.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/s390x/helper.c b/target/s390x/helper.c index 13ae9909ad..c5fb8966b6 100644 --- a/target/s390x/helper.c +++ b/target/s390x/helper.c @@ -58,6 +58,11 @@ hwaddr s390_cpu_get_phys_page_debug(CPUState *cs, vadd= r vaddr) vaddr &=3D 0x7fffffff; } =20 + /* We want to read the code (e.g., see what we are single-stepping).= */ + if (asc !=3D PSW_ASC_HOME) { + asc =3D PSW_ASC_PRIMARY; + } + if (mmu_translate(env, vaddr, MMU_INST_FETCH, asc, &raddr, &prot, fa= lse)) { return -1; } --=20 2.21.0