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Re: [Qemu-devel] [PATCH 06/14] exec.c: Make address_space_rw take transa


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 06/14] exec.c: Make address_space_rw take transaction attributes
Date: Thu, 09 Apr 2015 12:21:30 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0


On 09/04/2015 12:14, Peter Maydell wrote:
> On 9 April 2015 at 10:59, Edgar E. Iglesias <address@hidden> wrote:
>> > On Tue, Apr 07, 2015 at 09:09:52PM +0100, Peter Maydell wrote:
>>> >> Make address_space_rw take transaction attributes, rather
>>> >> than always using the 'unspecified' attributes.
>> >
>> > Reviewed-by: Edgar E. Iglesias <address@hidden>
>> >
>> > I guess that we eventually will need to convert the dma_
>> > functions?
> Probably, though I'm not clear what they bring to the party
> that the basic address_space_* functions don't (part of why
> I left them alone).

At this point, some memory barriers, basically.

Initially the IOMMU implementation was done in the dma_* functions
(using something called IIRC a DMAContext), but now they just take an
AddressSpace.

Paolo



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