linux-kernel - Re: [PATCH] bochs-drm: disable video before changing video mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1426753617.18873.24.camel@nilsson.home.kraxel.org>
Date:	Thu, 19 Mar 2015 09:26:57 +0100
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	Chris Ruffin <chris.ruffin@...el.com>
Cc:	linux-kernel@...r.kernel.org, Dave Airlie <airlied@...hat.com>,
	cmruffin@...il.com
Subject: Re: [PATCH] bochs-drm: disable video before changing video mode

On Mi, 2015-03-18 at 12:37 -0400, Chris Ruffin wrote:
> qemu and simics simulators both seem to expect that video should be disabled
> before changing the video mode.

Not required for qemu.  qemu allows updating the modesetting registers
(xres + friends) while vbe is enabled.

Turning it off, then back on after updating the registers doesn't hurt
though.  So if this change gets things going on simics it's fine with
me.

Reviewed-by: Gerd Hoffmann <kraxel@...hat.com>

cheers,
  Gerd


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/