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Re: [Qemu-devel] [RFC v9 06/27] virtio-blk: Take PCI memory range into a


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [RFC v9 06/27] virtio-blk: Take PCI memory range into account
Date: Thu, 19 Jul 2012 10:16:13 +0100

On Thu, Jul 19, 2012 at 10:14 AM, Stefan Hajnoczi <address@hidden> wrote:
> On Wed, Jul 18, 2012 at 7:29 PM, Michael S. Tsirkin <address@hidden> wrote:
>> On Wed, Jul 18, 2012 at 04:07:33PM +0100, Stefan Hajnoczi wrote:
>>> Support >4 GB physical memory accesses.
>>>
>>> Signed-off-by: Stefan Hajnoczi <address@hidden>
>>
>> Need some sane APIs, this is just too scary.
>
> Yes, this prototype has (at least) two layering violations:
> 1. Bypassing QEMU's memory subsystem because it isn't thread-safe.

Maybe we can use MemoryListener to fix this, although we need to take
care of thread-safety.

Stefan



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