Re: [Qemu-devel] [PATCH 10/11] config: Add header file for device config options

[Markus Armbruster]

Alexander Graf <address@hidden> writes:

> On 21.11.2010, at 13:37, Blue Swirl wrote:
>
>> On Fri, Nov 19, 2010 at 2:56 AM, Alexander Graf <address@hidden> wrote:
>>> So far we have C preprocessor defines for target and host config
>>> options, but we're lacking any information on which devices are
>>> available.
>>> 
>>> We do need that information at times though, for example in the
>>> ahci patch where we need to call a legacy init function depending
>>> on whether we have support compiled in or not.
>> 
>> That does not seem right. Devices should not care about what other
>> devices may exist. Perhaps stub style approach would be better.
>
> Well, for the -drive parameter we need to know what devices we can create and 
> I'd like to keep that code as close as possible to the actual device code.

Stupid question: why can't we just try to create, then check status to
figure out whether it failed because the device isn't available?

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