From nobody Wed Nov 27 13:34:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1731154449633948.9474020783492; Sat, 9 Nov 2024 04:14:09 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t9kL9-00045h-SM; Sat, 09 Nov 2024 07:13:20 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t9kKk-0002Uw-Eb; Sat, 09 Nov 2024 07:12:54 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t9kKi-0004cx-RT; Sat, 09 Nov 2024 07:12:54 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 59883A1613; Sat, 9 Nov 2024 15:07:09 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 20038167FA1; Sat, 9 Nov 2024 15:08:04 +0300 (MSK) Received: (nullmailer pid 3295385 invoked by uid 1000); Sat, 09 Nov 2024 12:08:01 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Rob Bradford , Daniel Henrique Barboza , Alistair Francis , Michael Tokarev Subject: [Stable-9.0.4 43/57] target/riscv: Set vtype.vill on CPU reset Date: Sat, 9 Nov 2024 15:07:45 +0300 Message-Id: <20241109120801.3295120-43-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731154451524116600 Content-Type: text/plain; charset="utf-8" From: Rob Bradford The RISC-V unprivileged specification "31.3.11. State of Vector Extension at Reset" has a note that recommends vtype.vill be set on reset as part of ensuring that the vector extension have a consistent state at reset. This change now makes QEMU consistent with Spike which sets vtype.vill on reset. Signed-off-by: Rob Bradford Reviewed-by: Daniel Henrique Barboza Message-ID: <20240930165258.72258-1-rbradford@rivosinc.com> Signed-off-by: Alistair Francis (cherry picked from commit f8c1f36a2e3dab4935e7c5690e578ac71765766b) Signed-off-by: Michael Tokarev diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 776f377849..a9483ced92 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1006,6 +1006,7 @@ static void riscv_cpu_reset_hold(Object *obj) cs->exception_index =3D RISCV_EXCP_NONE; env->load_res =3D -1; set_default_nan_mode(1, &env->fp_status); + env->vill =3D true; =20 #ifndef CONFIG_USER_ONLY if (cpu->cfg.debug) { --=20 2.39.5