From patchwork Mon Aug 5 15:29:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11077203 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5CED71398 for ; Mon, 5 Aug 2019 15:35:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4BB0428613 for ; Mon, 5 Aug 2019 15:35:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3F8912884A; Mon, 5 Aug 2019 15:35:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D8453286AA for ; Mon, 5 Aug 2019 15:35:02 +0000 (UTC) Received: from localhost ([::1]:54988 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1huf0n-0000YH-Qh for patchwork-qemu-devel@patchwork.kernel.org; Mon, 05 Aug 2019 11:35:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52308) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1huews-0003vP-Mo for qemu-devel@nongnu.org; Mon, 05 Aug 2019 11:31:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1huewn-0000zA-OP for qemu-devel@nongnu.org; Mon, 05 Aug 2019 11:30:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56096) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1huewn-0000yW-EW; Mon, 05 Aug 2019 11:30:53 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2F2DA2EF16A; Mon, 5 Aug 2019 15:30:52 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-48.ams2.redhat.com [10.36.117.48]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2EE325C2E2; Mon, 5 Aug 2019 15:30:50 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Mon, 5 Aug 2019 17:29:47 +0200 Message-Id: <20190805152947.28536-10-david@redhat.com> In-Reply-To: <20190805152947.28536-1-david@redhat.com> References: <20190805152947.28536-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Mon, 05 Aug 2019 15:30:52 +0000 (UTC) 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-for-4.2 v1 9/9] s390x/cpumodel: Add new TCG features to QEMU cpu model 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 , Ilya Leoshkevich , Halil Pasic , Christian Borntraeger , qemu-s390x@nongnu.org, Richard Henderson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP We now implement a bunch of new facilities we can properly indicate. ESOP-1/ESOP-2 handling is discussed in the PoP Chafter 3-15 ("Suppression on Protection"). The "Basic suppression-on-protection (SOP) facility" is a core part of z/Architecture without a facility indication. ESOP-2 is indicated by ESOP-1 + Side-effect facility ("ESOP-2"). Besides ESOP-2, the side-effect facility is only relevant for the guarded-storage facility (we don't implement). S390_ESOP: - We indicate DAT exeptions by setting bit 61 of the TEID (TEC) to 1 and bit 60 to zero. We don't trigger ALCP exceptions yet. Also, we set bit 0-51 and bit 62/63 to the right values. S390_ACCESS_EXCEPTION_FS_INDICATION: - The TEID (TEC) properly indicates in bit 52/53 on any access if it was a fetch or a store S390_SIDE_EFFECT_ACCESS_ESOP2: - We have no side-effect accesses (esp., we don't implement the guarded-storage faciliy), we correctly set bit 64 of the TEID (TEC) to 0 (no side-effect). - ESOP2: We properly set bit 56, 60, 61 in the TEID (TEC) to indicate the type of protection. We don't trigger KCP/ALCP exceptions yet. S390_INSTRUCTION_EXEC_PROT: - The MMU properly detects and indicates the exception on instruction fetches - Protected TLB entries will never get PAGE_EXEC set. There is no need to fake the abscence of any of the facilities - without the facilities, some bits of the TEID (TEC) are simply unpredictable. As IEP was added with z14 and we currently implement a z13, add it to the MAX model instead. Signed-off-by: David Hildenbrand --- target/s390x/gen-features.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c index 7e82f2f004..6e78d40d9a 100644 --- a/target/s390x/gen-features.c +++ b/target/s390x/gen-features.c @@ -704,12 +704,16 @@ static uint16_t qemu_V4_1[] = { }; static uint16_t qemu_LATEST[] = { + S390_FEAT_ACCESS_EXCEPTION_FS_INDICATION, + S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2, + S390_FEAT_ESOP, }; /* add all new definitions before this point */ static uint16_t qemu_MAX[] = { /* generates a dependency warning, leave it out for now */ S390_FEAT_MSA_EXT_5, + S390_FEAT_INSTRUCTION_EXEC_PROT, }; /****** END FEATURE DEFS ******/