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Date: Mon, 16 Sep 2013 18:27:59 +0300
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From: Marcel Apfelbaum <marcel.a@redhat.com>
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Subject: Re: [Qemu-devel] [Question] memory: AddressSpace backed by single
	IO MemoryRegion
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "marcel.a@redhat.com" <marcel.a@redhat.com>

On Monday, September 16, 2013, Paolo Bonzini <pbonzini@redhat.com> wrote:
> Il 16/09/2013 16:48, Marcel Apfelbaum ha scritto:
>> Hi all,
>>
>> I have an AddressSpace backed by a single MemoryRegion which yis
>> initiated using memoy_region_init_io (has ops).
>> Once I enable it, I get an assertion:
>> =A0 =A0 exec.c:806: register_subpage: Assertion `existing->mr->subpage |=
| existing->mr =3D=3D &io_mem_unassigned' failed.
>>
>>
>> Here is the pseudo-code:
>> =A0 =A0 memory_region_init_io(my_reg, owner, my_ops, my_obj, "my region"=
, INT64_MAX);
>> =A0 =A0 memory_region_set_enabled(my_reg, false);
>> =A0 =A0 address_space_init(my_as, my_reg, name);
>> =A0 =A0 memory_region_set_enabled(my_reg, true);
>> Receives:
>> =A0 =A0 exec.c:806: register_subpage: Assertion `existing->mr->subpage |=
| existing->mr =3D=3D &io_mem_unassigned' failed.
>>
>> Any idea why? Any suggestion would be appreciated.
>
> Backtrace, and print of local variables in mem_add?
>


Sure! I will send tonight!
Thanks,
Marcel

> Paolo
>