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 Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BF6C3C88E5C for ; Wed, 16 Sep 2026 12:35:08 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1x6oqL-00041t-59; Wed, 16 Sep 2026 08:34:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x6oqJ-00041d-AD for qemu-devel@nongnu.org; Wed, 16 Sep 2026 08:34:27 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x6oqH-000393-Br for qemu-devel@nongnu.org; Wed, 16 Sep 2026 08:34:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1789562064; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=MkLF4nUNFDGdNIKWjQGK9h2d0x/s1kvWCz3q3Obwcd8=; b=VnpwuvxjB8C9v/RxL5ewMpYNgrLN6SO05jxl0pCNZlCxHd0kO8iDfS6gjysA1axCAtsF5m PWafih5eEKiPIqtWrCz/DexTaLXgVeRQ92SeSAkriapW8zI/6H2MdgHfIhMflz4GMFd1+4 bcKF1VkWJ2GEgz1lZtS0G0LThwEsD3c= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-677-uYFW5wC0PbqIylxWWGlFWQ-1; Wed, 16 Sep 2026 08:33:17 -0400 X-MC-Unique: uYFW5wC0PbqIylxWWGlFWQ-1 X-Mimecast-MFC-AGG-ID: uYFW5wC0PbqIylxWWGlFWQ_1789561996 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 29837184B397; Wed, 16 Sep 2026 12:33:16 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.44.22.5]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id E289B180034C; Wed, 16 Sep 2026 12:33:15 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 6A28421E6A04; Wed, 16 Sep 2026 14:33:13 +0200 (CEST) From: Markus Armbruster To: a vincent163 Cc: "qemu-devel@nongnu.org" Subject: Re: [BUG] x86_64 guest: vpmovmskb produces wrong mask on a riscv64 host (user-mode) -- root cause = TCG_REG_TMP0 clobber in tcg/riscv tcg_out_dup{m,i}_vec (10.0.0-10.0.7, 10.1.0-10.1.3, 10.2.0) In-Reply-To: (a. vincent's message of "Wed, 16 Sep 2026 09:41:47 +0000") References: Date: Wed, 16 Sep 2026 14:33:13 +0200 Message-ID: <87zexh8jg6.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, SPF_HELO_PASS=-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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Please read docs/devel/code-provenance.rst section "Use of AI-generated content".