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Re: [Qemu-devel] [PATCH 2/2] usb-xhci: Use PCI DMA helper functions


From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH 2/2] usb-xhci: Use PCI DMA helper functions
Date: Thu, 19 Apr 2012 14:13:54 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.3) Gecko/20120307 Thunderbird/10.0.3

On 04/04/12 02:15, David Gibson wrote:
> Shortly before 1.0, we added helper functions / wrappers for doing PCI DMA
> from individual devices.  This makes what's going on clearer and means that
> when we add IOMMU support somewhere in the future, only the general PCI
> code will have to change, not every device that uses PCI DMA.

Tweaked a bit to remove the #ifdefs, updated patch attached for
reference.  Added to usb patch queue.

thanks,
  Gerd

Attachment: 0001-usb-xhci-Use-PCI-DMA-helper-functions.patch
Description: Text document


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