Re: [Qemu-devel] [PATCH] hw: Add test device for unittests execution

[Avi Kivity <avi@redhat.com>]

On 08/27/2011 01:07 PM, Edgar E. Iglesias wrote:
> >  >+
> >  >+static ISADeviceInfo testdev_info = {
> >  >+    .qdev.name  = "testdev",
> >  >+    .qdev.size  = sizeof(struct testdev),
> >  >+    .init       = init_test_device,
> >  >+    .qdev.props = (Property[]) {
> >  >+        DEFINE_PROP_CHR("chardev", struct testdev, chr),
> >  >+        DEFINE_PROP_END_OF_LIST(),
> >  >+    },
> >  >+};
> >
> >  Should this use MemoryRegion?
>
> Yes. And what is the reason for using IO ports?

Mostly for ease of use.  The tests were originally run under a separate 
kvm userspace that didn't emulate a full machine.

> There are archs that dont have ioport connections out from the CPU.
>
> If we are adding virtual devices for tests, they should preferably work for
> all archs.
>

I think all the functionallity here (apart from that which Anthony 
pointed out is available by other means) is x86 specific.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.