From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 8C5E5711 for ; Thu, 15 May 2014 20:41:34 +0000 (UTC) Received: from mail-ee0-f49.google.com (mail-ee0-f49.google.com [74.125.83.49]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id EF00C2020D for ; Thu, 15 May 2014 20:41:33 +0000 (UTC) Received: by mail-ee0-f49.google.com with SMTP id e53so971911eek.22 for ; Thu, 15 May 2014 13:41:32 -0700 (PDT) Sender: Levente Kurusa Date: Thu, 15 May 2014 22:41:28 +0200 From: Levente Kurusa To: "H. Peter Anvin" Message-ID: <20140515204128.GA10395@linux.com> References: <1995824.rdvEX5SOIt@avalon> <20140511171824.GB2527@linux.com> <20140512161539.GX12708@titan.lakedaemon.net> <20140513070851.GA20002@thin> <53739333.30108@zytor.com> <20140514185449.GB4475@jtriplet-mobl1> <53751303.3010000@zytor.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="YiEDa0DAkWCtVeE4" Content-Disposition: inline In-Reply-To: <53751303.3010000@zytor.com> Cc: PJ Waskiewicz , Sarah A Sharp , ksummit-discuss@lists.linuxfoundation.org, Anton Arapov , Dirk Hohndel Subject: Re: [Ksummit-discuss] Fwd: [TECH TOPIC] QR encoded oops for the kernel List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --YiEDa0DAkWCtVeE4 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Thu, May 15, 2014 at 12:18:27PM -0700, H. Peter Anvin wrote: > On 05/14/2014 11:54 AM, Josh Triplett wrote: > >=20 > > That's certainly true. On the other hand, I'd really like to see a > > version of the oops-as-QR-code bits that uses VGA block characters to > > work in non-graphics, non-framebuffer mode, which would require fitting > > in at most 80x50 (using the half-block characters). That wouldn't allow > > nearly as much data, but likely enough for a somewhat useful crash > > report, especially in aggregate. > >=20 >=20 > Now we're getting into a funny area, which is "what is the lowest common > denominator". If the lowest common denominator is VGA, a simple VGA > driver could force the screen to 640x480 graphics mode, or reprogram the > font to allow for an 160x100 pixel pseudographic mode (more if we allow > the font size to be adjusted). It is not at all clear that using IBM > pseudographics with no other programming is a useful point on that spectr= um. >=20 > Either way, this is *way* past turning into a technical conversation, > and belongs on LKML and not ksummit-discuss. >=20 Right, I'll write up what technical stuff we discussed here and post it on LKML in the RFC thread so we can get rid of the tech discussions here. Thanks, Levente Kurusa --YiEDa0DAkWCtVeE4 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJTdSZ4AAoJELBqK2lO9dZB3hMIAKdFYGqG0juhAKjMyWN7ZLbR AA1vasYfKvredvPwIVtwVeekRnjg5TJ+PEeHwFkgbmWHFnZ1XoAKAZQQeUiyelHL zw0nlRrDfa1tEX7gmGmMlsumLYNvWFfqHnGR2SCq2I4Hr8lchx8t8de0Tqzq7Bm/ 4M9NRUhJEbviRPxmQV58CS1zH0DuYuZayMhBC69G9SZNWL781oFtidufFESjO771 tUFvoB1CSHgkko5+1/1kme6sAOiEVygPT7wJXfSUpIXwuLnZhDrwy4qU84A3vTvk sNogfKRllzKYyNam9tcgp7gR61X3PC1vi0jnSkRLoY3K2jK6Rj7bZXfx+2n46tY= =oWi/ -----END PGP SIGNATURE----- --YiEDa0DAkWCtVeE4--