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Re: [Qemu-devel] [PATCH RFC] memory: drop _overlap variant

From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH RFC] memory: drop _overlap variant
Date: Thu, 14 Feb 2013 20:23:04 +0200 
On Thu, Feb 14, 2013 at 8:12 PM, Michael S. Tsirkin <address@hidden> wrote:
>>
>> Is there an actual real problem that needs fixing?
>
> Yes. Guests sometimes cause device BARs to temporary overlap
> the APIC range during BAR sizing. It works fine on a physical
> system but fails on KVM since pci has same priority.
>
> See the report:
> [BUG] Guest OS hangs on boot when 64bit BAR present
>

Is PCI_COMMAND_MEMORY set while this is going on?
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