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Re: [Qemu-devel] No more chameleon devices
From: |
Daniel P . Berrangé |
Subject: |
Re: [Qemu-devel] No more chameleon devices |
Date: |
Thu, 18 Oct 2018 15:38:58 +0100 |
User-agent: |
Mutt/1.10.1 (2018-07-13) |
On Thu, Oct 18, 2018 at 03:15:31PM +0100, Peter Maydell wrote:
> On 18 October 2018 at 15:11, Marcel Apfelbaum
> <address@hidden> wrote:
> > Maybe would be a step toward a clean "socket-device" modeling (what goes
> > where)
> > and also QEMU emulation would be cleaner since in bare metal you cannot
> > plug a PCIe device into a PCI slot and vice-versa or have the same device ID
> > for both a PCI and a PCIe device.
>
> So the command line would then distinguish "-device ne2k-pci" and
> "-device ne2k-pcie", and users need to know whether the machine they're
> using implements PCI or PCIe, and use the right device name accordingly?
I can understand the rational for splitting the virtio devices, because
of the way they completely change their functionality, even PCI device ID,
depending on whether plugged into a pci or pcie slot.
I'm not seeing the real world benefit of creating -pci vs -pcie for all
the other non-virtio devices. AFAIK, the existing devices work the same
regardless of what bus they are plugged into. So why would a user/app
want to use such devices ? It feels like extra work for no clear benefit
Regards,
Daniel
--
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- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, (continued)
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Daniel P . Berrangé, 2018/10/16
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Laine Stump, 2018/10/16
- [Qemu-devel] No more chameleon devices (was: [PATCH] virtio: Provide version-specific variants of virtio PCI devices), Markus Armbruster, 2018/10/17
- Re: [Qemu-devel] No more chameleon devices (was: [PATCH] virtio: Provide version-specific variants of virtio PCI devices), Gerd Hoffmann, 2018/10/17
- Re: [Qemu-devel] No more chameleon devices, Markus Armbruster, 2018/10/17
- Re: [Qemu-devel] No more chameleon devices (was: [PATCH] virtio: Provide version-specific variants of virtio PCI devices), Eduardo Habkost, 2018/10/17
- Re: [Qemu-devel] No more chameleon devices (was: [PATCH] virtio: Provide version-specific variants of virtio PCI devices), Michael S. Tsirkin, 2018/10/17
- Re: [Qemu-devel] No more chameleon devices (was: [PATCH] virtio: Provide version-specific variants of virtio PCI devices), Eduardo Habkost, 2018/10/17
- Re: [Qemu-devel] No more chameleon devices, Marcel Apfelbaum, 2018/10/18
- Re: [Qemu-devel] No more chameleon devices, Peter Maydell, 2018/10/18
- Re: [Qemu-devel] No more chameleon devices,
Daniel P . Berrangé <=
- Re: [Qemu-devel] No more chameleon devices, Peter Maydell, 2018/10/18
- Re: [Qemu-devel] No more chameleon devices, Marcel Apfelbaum, 2018/10/18
- Re: [Qemu-devel] No more chameleon devices, Peter Maydell, 2018/10/18
- Re: [Qemu-devel] No more chameleon devices, Marcel Apfelbaum, 2018/10/18
- Re: [Qemu-devel] No more chameleon devices, Eduardo Habkost, 2018/10/18
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Andrea Bolognani, 2018/10/17
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Eduardo Habkost, 2018/10/17
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Michael S. Tsirkin, 2018/10/17
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Eduardo Habkost, 2018/10/17
- Re: [Qemu-devel] [PATCH] virtio: Provide version-specific variants of virtio PCI devices, Andrea Bolognani, 2018/10/18