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Wed, 20 May 2026 09:34:06 +0000 (UTC) Received: from localhost (unknown [10.44.33.242]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 0ADA51956053; Wed, 20 May 2026 09:34:04 +0000 (UTC) From: Cornelia Huck To: Paolo Bonzini , Philippe =?utf-8?Q?Mathieu-Daud?= =?utf-8?Q?=C3=A9?= Cc: qemu-devel , Kevin Wolf , Richard Henderson , Hanna Reitz , Alex =?utf-8?Q?Benn=C3=A9e?= , "open list:Block layer core" , qemu-s390x Subject: Re: [RFC PATCH] buildsys: Stop checking for ESA/390 host In-Reply-To: Organization: "Red Hat GmbH, Sitz: Werner-von-Siemens-Ring 12, D-85630 Grasbrunn, Handelsregister: Amtsgericht =?utf-8?Q?M=C3=BCnchen=2C?= HRB 153243, =?utf-8?Q?Gesch=C3=A4ftsf=C3=BChrer=3A?= Ryan Barnhart, Charles Cachera, Avril Crosse O'Flaherty" References: <20260519145859.91999-1-philmd@linaro.org> User-Agent: Notmuch/0.39 (https://notmuchmail.org) Date: Wed, 20 May 2026 11:34:02 +0200 Message-ID: <87h5o2o25x.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass client-ip=170.10.129.124; envelope-from=cohuck@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 8 X-Spam_score: 0.8 X-Spam_bar: / X-Spam_report: (0.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no 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 On Tue, May 19 2026, Paolo Bonzini wrote: > Il mar 19 mag 2026, 16:59 Philippe Mathieu-Daud=C3=A9 = ha > scritto: > >> We still build QEMU tools on 32-bit hosts (see commit >> cf634dfcd8f), however no OS supported by QEMU still runs >> on ESA/390 (Linux dropped support in release 4.1 in 2015). >> > > If Linux still supports 31-bit *userspace binaries*, I would keep the > configure check, so that 32-bit s390 is properly detected as an unsupport= ed > CPU: FWIW, Linux removed support for the 31 bit compat code in v6.19 (late last year); it is unclear if anyone had been using it recently anyway. > > elif check_define __s390__ ; then >> if check_define __s390x__ ; then >> cpu=3D"s390x" >> else >> cpu=3D"s390" >> fi >> > > and perhaps keep the CPU_CFLAGS only from the other hunk: > > s390) >> linux_arch=3Ds390 >> CPU_CFLAGS=3D"-m31" >> ;; >> > > s390x) >> host_arch=3Ds390x >> linux_arch=3Ds390 >> I'm also wondering if anyone had actually tried to use QEMU on such a setup recently; I don't have a setup to test that in any case.