From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id A767448350 for ; Tue, 28 Nov 2023 14:22:06 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id BA23168CF6C; Tue, 28 Nov 2023 16:22:03 +0200 (EET) Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 1A64068CBFA for ; Tue, 28 Nov 2023 16:21:57 +0200 (EET) Received: by mail.gandi.net (Postfix) with ESMTPSA id 6E7B91BF210 for ; Tue, 28 Nov 2023 14:21:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=niedermayer.cc; s=gm1; t=1701181316; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=3qHgZQv/xrIGuO6qbGqye5eAZhpPDU/b+fqyhe3Pty8=; b=UmzCdvNKRJ8+C3uJJYXFwhziD/FWVs5nxqrT/hUIJm4OCxtWXsLCfd0yseg5n0BaPsJySY 0Yx7lqb7q5vASxAXLx1GQXngWewAxutIOoq1ROmrTiU485oU9xwNIW8JVdPQxKuQt95Y30 bgFPVR2RbPPXdISqL2F+CkFHsHjdOVU+2axrQIZxLRlNfa22opmGjeIbXKXdjyfG/Epuat v28XCAJWy2nURFqB2GdhNZv5FQct8+47lZ+H052R2iPAw1faJv8kP8doXH5l55TkQ6tmUl EEvvQJadyMHA10kyOEuir+NtIhIJiJgWPa1U/onGjIgrH6PVhJl27lAfeuLDoA== Date: Tue, 28 Nov 2023 15:21:55 +0100 From: Michael Niedermayer To: FFmpeg development discussions and patches Message-ID: <20231128142155.GN3543730@pb2> References: <20231127123118.3622784-1-martin@martin.st> <12696030.Brfu6Qr6Id@basile.remlab.net> <20231127232214.GM3543730@pb2> <0F76AE61-2CCF-4397-BA9C-1C74AAD8BFEE@remlab.net> MIME-Version: 1.0 In-Reply-To: <0F76AE61-2CCF-4397-BA9C-1C74AAD8BFEE@remlab.net> X-GND-Sasl: michael@niedermayer.cc Subject: Re: [FFmpeg-devel] [PATCH] fate.sh: Allow overriding what targets to make for running the tests X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: multipart/mixed; boundary="===============7385287155707654344==" Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: --===============7385287155707654344== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="o1EpD5Zd1Q4+cr4h" Content-Disposition: inline --o1EpD5Zd1Q4+cr4h Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Nov 28, 2023 at 09:27:08AM +0200, R=E9mi Denis-Courmont wrote: >=20 >=20 > Le 28 novembre 2023 01:22:14 GMT+02:00, Michael Niedermayer a =E9crit=A0: > >On Mon, Nov 27, 2023 at 05:46:40PM +0200, R=E9mi Denis-Courmont wrote: > >[...] > >> Also FWIW, RV broke due to misaligned accesses and illegal vector type= s that > >> QEMU tolerated. That is rather an argument against QEMU than against t= his MR=20 > >> but still. > > > >has someone reported this to qemu ? > >(seems like a bug) >=20 > It's not a bug. The specification leaves those cases *undefined*. QEMU su= pports them because they can, and adding sanity checks would just slow stuf= f down. >=20 > Also generally QEMU TCG policy seems to be maximize perf and compatibilit= y, not formal correctness. I think i read somewhere that recent qemu supposedly checks alignment on arm more completely. But i couldnt quickly find a official statement about that But either way, qemu could emit such code optionally when it is used for testing. Which is one of the things people use qemu for. So IMHO it would make sense for qemu to detect cases that are undefined even if for no other reason than to emulate the hw more exactly. If this is not done, qemu can be detected and code could refuse or fail to run thx [...] --=20 Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Modern terrorism, a quick summary: Need oil, start war with country that has oil, kill hundread thousand in war. Let country fall into chaos, be surprised about raise of fundamantalists. Drop more bombs, kill more people, be surprised about them taking revenge and drop even more bombs and strip your own citizens of their rights and freedoms. to be continued --o1EpD5Zd1Q4+cr4h Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABEIAB0WIQSf8hKLFH72cwut8TNhHseHBAsPqwUCZWX3fwAKCRBhHseHBAsP q0WjAJ9h+HfEj8MekSvcuWH1TwvmUwmmGQCcCZ8U5ZTzBmdgBckUpZwTcFHgDFc= =dkp/ -----END PGP SIGNATURE----- --o1EpD5Zd1Q4+cr4h-- --===============7385287155707654344== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe". --===============7385287155707654344==--