All of lore.kernel.org
 help / color / mirror / Atom feed
From: Gerd Hoffmann <kraxel@redhat.com>
To: Kevin O'Connor <kevin@koconnor.net>
Cc: Drew <drjones@redhat.com>, "Stefan Hajnoczi" <stefanha@gmail.com>,
	seabios@seabios.org, qemu-devel <qemu-devel@nongnu.org>,
	"Marc Marí" <markmb@redhat.com>, Laszlo <lersek@redhat.com>
Subject: Re: [Qemu-devel] QEMU fw_cfg DMA interface
Date: Tue, 18 Aug 2015 00:08:41 +0200	[thread overview]
Message-ID: <1439849321.22911.39.camel@redhat.com> (raw)
In-Reply-To: <20150807043040.GA18349@morn.localdomain>

  Hi,

> > The command line I used is:
> > 
> > x86_64-softmmu/qemu-system-x86_64 --enable-kvm \
> >     -kernel /boot/vmlinuz-4.0.7-300.fc22.x86_64 \
> >     -L pc-bios/optionrom/ \
> >     -bios roms/seabios/out/bios.bin -nographic
> 
> Thanks.  One thing that immediately pops up is that even though
> "-nographic" is used, it looks like QEMU still emulates a VGA device
> and that device has an option rom that takes several milliseconds to
> init the display hardware.  Adding "-device VGA,romfile=" to the qemu
> command line will further reduce the boot time by avoiding this
> hardware init delay.

Same goes for the NIC btw.

cheers,
  Gerd

  reply	other threads:[~2015-08-17 22:08 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-06 11:00 QEMU fw_cfg DMA interface Marc Marí
2015-08-06 11:00 ` [Qemu-devel] " Marc Marí
2015-08-06 11:01 ` [Qemu-devel] [PATCH 0/5] " Marc Marí
2015-08-06 11:01   ` [Qemu-devel] [PATCH 1/5] fw_cfg: document fw_cfg_modify_iXX() update functions Marc Marí
2015-08-06 11:01   ` [Qemu-devel] [PATCH 2/5] fw_cfg DMA interface documentation Marc Marí
2015-08-06 14:20     ` Kevin O'Connor
2015-08-07  8:12       ` Marc Marí
2015-08-06 11:01   ` [Qemu-devel] [PATCH 3/5] Implement fw_cfg DMA interface Marc Marí
2015-08-06 14:47     ` Kevin O'Connor
2015-08-06 14:59       ` Marc Marí
2015-08-07 20:40         ` Kevin O'Connor
2015-08-07 22:58           ` Laszlo Ersek
2015-08-06 20:49     ` Laszlo Ersek
2015-08-06 21:11       ` Marc Marí
2015-08-06 21:32         ` Laszlo Ersek
2015-08-07  7:26           ` Marc Marí
2015-08-07 12:14           ` Eric Blake
2015-08-06 11:01   ` [Qemu-devel] [PATCH 4/5] Enable fw_cfg DMA interface for ARM Marc Marí
2015-08-06 11:01   ` [Qemu-devel] [PATCH 5/5] Enable fw_cfg DMA interface for x86 Marc Marí
2015-08-06 11:03 ` [PATCH] QEMU fw_cfg DMA interface documentation Marc Marí
2015-08-06 12:12   ` Stefan Hajnoczi
2015-08-06 12:22     ` Laszlo Ersek
2015-08-06 12:29       ` Stefan Hajnoczi
2015-08-06 14:08   ` Andrew Jones
2015-08-06 14:19     ` Marc Marí
2015-08-06 14:28       ` Andrew Jones
2015-08-06 14:55         ` Laszlo Ersek
2015-08-06 15:13           ` Marc Marí
2015-08-06 21:08   ` Laszlo Ersek
2015-08-06 12:27 ` QEMU fw_cfg DMA interface Stefan Hajnoczi
2015-08-06 12:27   ` [Qemu-devel] " Stefan Hajnoczi
2015-08-06 12:37   ` Marc Marí
2015-08-06 12:37     ` [Qemu-devel] " Marc Marí
2015-08-06 12:40     ` Stefan Hajnoczi
2015-08-06 12:40       ` [Qemu-devel] " Stefan Hajnoczi
2015-08-06 15:30     ` Kevin O'Connor
2015-08-06 15:30       ` [Qemu-devel] " Kevin O'Connor
2015-08-06 15:53       ` Marc Marí
2015-08-06 15:53         ` [Qemu-devel] " Marc Marí
2015-08-07  4:30         ` Kevin O'Connor
2015-08-17 22:08           ` Gerd Hoffmann [this message]
  -- strict thread matches above, loose matches on Subject: below --
2015-08-31  9:08 Marc Marí
2015-09-18  8:58 Marc Marí
2015-10-01 12:14 Marc Marí
2015-10-01 16:03 ` Eric Blake
     [not found]   ` <560D5945.5050700-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-10-01 16:11     ` Eric Blake
2015-10-01 16:11       ` Eric Blake
2015-10-01 16:19       ` Laszlo Ersek
2015-10-01 16:17     ` Laszlo Ersek
2015-10-01 16:17       ` Laszlo Ersek
     [not found]       ` <560D5C7E.8080900-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-10-01 16:21         ` Eric Blake
2015-10-01 16:21           ` Eric Blake
2015-10-01 16:34           ` Laszlo Ersek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1439849321.22911.39.camel@redhat.com \
    --to=kraxel@redhat.com \
    --cc=drjones@redhat.com \
    --cc=kevin@koconnor.net \
    --cc=lersek@redhat.com \
    --cc=markmb@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=seabios@seabios.org \
    --cc=stefanha@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.