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Re: [Qemu-devel] [Question] memory: AddressSpace backed by single IO Mem
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [Question] memory: AddressSpace backed by single IO MemoryRegion |
Date: |
Mon, 16 Sep 2013 16:52:53 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130805 Thunderbird/17.0.8 |
Il 16/09/2013 16:48, Marcel Apfelbaum ha scritto:
> Hi all,
>
> I have an AddressSpace backed by a single MemoryRegion which is
> initiated using memory_region_init_io (has ops).
> Once I enable it, I get an assertion:
> exec.c:806: register_subpage: Assertion `existing->mr->subpage ||
> existing->mr == &io_mem_unassigned' failed.
>
>
> Here is the pseudo-code:
> memory_region_init_io(my_reg, owner, my_ops, my_obj, "my region",
> INT64_MAX);
> memory_region_set_enabled(my_reg, false);
> address_space_init(my_as, my_reg, name);
> memory_region_set_enabled(my_reg, true);
> Receives:
> exec.c:806: register_subpage: Assertion `existing->mr->subpage ||
> existing->mr == &io_mem_unassigned' failed.
>
> Any idea why? Any suggestion would be appreciated.
Backtrace, and print of local variables in mem_add?
Paolo