Re: [Qemu-devel] [PATCHv2 2/3] Allow ISA bus to be configured out

[Markus Armbruster]

David Gibson <address@hidden> writes:

> Currently, the code to handle the legacy ISA bus is always included in
> qemu.  However there are lots of platforms that don't include ISA legacy
> devies, and quite a few that have never used ISA legacy devices at all.
>
> This patch allows the ISA bus code to be disabled in the configuration for
> platforms where it doesn't make sense.
>
> For now, the default configs are adjusted to include ISA on all platforms
> including PCI: anything with PCI can at least in principle add an i82378
> PCI->ISA bridge.  Also, CONFIG_IDE_CORE which is already in pci.mak
> requires ISA support.
>
> We also explicitly enable ISA on some other non-PCI platforms which include
> ISA devices: moxie, sparc and unicore32.  We may want to pare this down in
> future.
>
> The platforms that will lose ISA by default are: cris, lm32, microblazeel,
> microblaze, openrisc, s390x, tricore, xtensaeb, xtensa.  As far as I can
> tell none of these ever used ISA.
>
> Signed-off-by: David Gibson <address@hidden>
> Acked-by: Michael S. Tsirkin <address@hidden>

Reviewed-by: Markus Armbruster <address@hidden>