Re: [Qemu-devel] [PATCH 00/23] Suppress unused default drives

[Peter Maydell]

On 9 August 2012 15:08, Markus Armbruster <address@hidden> wrote:
> Peter Maydell <address@hidden> writes:
>> For clarity: what are the negative effects that result from
>> machines not saying no_floppy &c ?
>
> "info block" shows the unused default drives.  For instance,
>
>     $ qemu-system-x86_64 -vnc :0 -monitor stdio
>     QEMU 1.1.50 monitor - type 'help' for more information
>     (qemu) info block
>     ide1-cd0: removable=1 locked=0 tray-open=0 io-status=ok [not inserted]
>     floppy0: removable=1 locked=0 tray-open=0 [not inserted]
>     sd0: removable=1 locked=0 tray-open=0 [not inserted]
>     pflash0: removable=0 file=/work/armbru/qemu/bld-x86/pc-bios/bios.bin ro=1 
> drv=raw encrypted=0 bps=0 bps_rd=0 bps_wr=0 iops=0 iops_rd=0 iops_wr=0
>
> Drive sd0 is unused here.  Might confuse the uninitiated.  Moreover, you
> *can* use it for something entirely else, if=sd notwithstanding:
>
>     (qemu) device_add lsi
>     (qemu) device_add scsi-cd,drive=sd0

If/when we get a PCI SD card controller model, would all the PCI
using machines need to be added to take the 'no default sd card'
setting out again, or does it get overridden anyway if you say
"and I'd like an sd controller"?

-- PMM