From nobody Tue May 25 15:52:23 2021 X-Original-To: ports-bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 1A16DB94963 for ; Tue, 25 May 2021 15:52:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FqJVw01ZFz3Nl6 for ; Tue, 25 May 2021 15:52:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id DDB4420600 for ; Tue, 25 May 2021 15:52:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 14PFqNKL031611 for ; Tue, 25 May 2021 15:52:23 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 14PFqNQA031610 for ports-bugs@FreeBSD.org; Tue, 25 May 2021 15:52:23 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: ports-bugs@FreeBSD.org Subject: [Bug 256152] graphics/qt5-3d: fails to work on processors with CPU < haswell (anything without AVX2) Date: Tue, 25 May 2021 15:52:23 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: crahman@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: kde@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter flagtypes.name Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Ports bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-ports-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-ports-bugs@freebsd.org X-BeenThere: freebsd-ports-bugs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256152 Bug ID: 256152 Summary: graphics/qt5-3d: fails to work on processors with CPU < haswell (anything without AVX2) Product: Ports & Packages Version: Latest Hardware: amd64 OS: Any Status: New Severity: Affects Many People Priority: --- Component: Individual Port(s) Assignee: kde@FreeBSD.org Reporter: crahman@gmail.com Flags: maintainer-feedback?(kde@FreeBSD.org) Assignee: kde@FreeBSD.org The fix to bug#248155 forces the build of qt5-3d to generate AVX2 instructi= ons even on systems that do not support it. On a Q9650 penryn (which does not support AVX2), with or without CPUTYPE se= t to core2: Use SSE2 instructions .................. yes Use AVX2 instructions .................. yes results during configuration. As a result, use of qt5-3d after building it on a pre-AVX2 machine results = in failure via SIGILL. This includes attempting to build the dependent port pyside2, and is the source of bug#255753. The problem is related to comment#6 in bug#248155: "Yeah, someone should invest some time in why the AVX2 detection fails." However, until that problem is fixed it would be better to tolerate the diminished performance resulting from underestimating CPU capabilities than= the cryptic failure of dependent systems to run at all. Perhaps in the meanwhi= le the use of AVX2 instructions should be made a port configuration option? Thanks! --=20 You are receiving this mail because: You are the assignee for the bug.=