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Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU |
Date: |
Wed, 27 May 2015 11:30:19 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 26/05/2015 23:25, Christopher Covington wrote:
> On 05/25/2015 08:53 AM, Paolo Bonzini wrote:
>>
>> On 22/05/2015 13:12, Daniel P. Berrange wrote:
>>> In
>>> particular I don't see why we need to have a SATA controller and ISA/LPC
>>> bridge in every virt machine - root PCI bus only should be possible, as you
>>> can provide disks via virtio-blk or virtio-scsi and serial, parallel, mouse,
>>> floppy via PCI devices and/or by adding a USB bus in the cases where you
>>> really need one.
>>
>> I think removing the ISA/LPC bridge is hard. It includes the real-time
>> clock and fw_cfg, for example.
>
> Could VirtIO specified replacements make sense for these peripherals?
Not really. virtio is too heavyweight and you'd be reinventing the
wheel unnecessarily.
For example, ARM's "-M virt" uses a pl011 block for the RTC, and also
uses fw_cfg. Another commonly used ISA device is the UART, for which
again -M virt uses a pl031.
Paolo
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, (continued)
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Daniel P. Berrange, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Peter Maydell, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Daniel P. Berrange, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Peter Maydell, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Daniel P. Berrange, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Gerd Hoffmann, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Markus Armbruster, 2015/05/22
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Paolo Bonzini, 2015/05/25
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Christopher Covington, 2015/05/26
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU,
Paolo Bonzini <=
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Avi Kivity, 2015/05/27
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Paolo Bonzini, 2015/05/27
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Peter Maydell, 2015/05/27
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Paolo Bonzini, 2015/05/27
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Christopher Covington, 2015/05/27
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Paolo Bonzini, 2015/05/27
- Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Dr. David Alan Gilbert, 2015/05/27
Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Gerd Hoffmann, 2015/05/22
Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU, Kevin O'Connor, 2015/05/22