Peter Maydell <peter.mayd...@linaro.org> writes: > On 9 August 2012 15:08, Markus Armbruster <arm...@redhat.com> wrote: >> Peter Maydell <peter.mayd...@linaro.org> 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"?
".no_sdcard = 0" makes sense only when the board uses the default IF_SD drive. Existence of an PCI SD card device model for the user to -device is not relevant for the board's QEMUmachine member no_sdcard. QEMUmachine describes the board, not devices that could be added to it. Only when we add an SD card to a board should its QEMUmachine no_sdcard go back to 0.
