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Re: [Qemu-devel] QEMU fw_cfg DMA interface
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] QEMU fw_cfg DMA interface |
Date: |
Tue, 18 Aug 2015 00:08:41 +0200 |
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
- Re: [Qemu-devel] [PATCH 3/5] Implement fw_cfg DMA interface, (continued)
[Qemu-devel] QEMU fw_cfg DMA interface, Marc Marí, 2015/08/31
- [Qemu-devel] [PATCH v2 0/5] fw_cfg DMA interface, Marc Marí, 2015/08/31
- [Qemu-devel] [PATCH v2 1/5] fw_cfg: document fw_cfg_modify_iXX() update functions, Marc Marí, 2015/08/31
- [Qemu-devel] [PATCH v2 4/5] Enable fw_cfg DMA interface for ARM, Marc Marí, 2015/08/31
- [Qemu-devel] [PATCH v2 5/5] Enable fw_cfg DMA interface for x86, Marc Marí, 2015/08/31
- [Qemu-devel] [PATCH v2 2/5] fw_cfg DMA interface documentation, Marc Marí, 2015/08/31
- Re: [Qemu-devel] [PATCH v2 2/5] fw_cfg DMA interface documentation, Kevin O'Connor, 2015/08/31
- [Qemu-devel] [PATCH v2 3/5] Implement fw_cfg DMA interface, Marc Marí, 2015/08/31
- Re: [Qemu-devel] [PATCH v2 3/5] Implement fw_cfg DMA interface, Kevin O'Connor, 2015/08/31