Re: [PATCH] Add I/O hypercalls for i386 paravirt

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To: James Courtier-Dutton <James@...>

Cc: Jeremy Fitzhardinge <jeremy@...>, Zachary Amsden <zach@...>, Andrew Morton <akpm@...>, Linux Kernel Mailing List <linux-kernel@...>, Virtualization Mailing List <virtualization@...>, Rusty Russell <rusty@...>, Chris Wright <chrisw@...>, Avi Kivity <avi@...>

Subject: Re: [PATCH] Add I/O hypercalls for i386 paravirt

Date: Wednesday, August 22, 2007 - 6:20 pm

* James Courtier-Dutton (James@superbug.co.uk) wrote:
quoted text> If one could directly expose a device to the guest, this feature could
> be extremely useful for me.
> Is it possible? How would it manage to handle the DMA bus mastering?

Yes it's possible (Xen supports pci pass through).  Without an IOMMU
(like Intel VT-d or AMD IOMMU) it's not DMA safe.

thanks,
-chris
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Messages in current thread:

[PATCH] Add I/O hypercalls for i386 paravirt, Zachary Amsden, (Wed Aug 22, 1:23 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Benjamin Herrenschmidt, (Mon Aug 27, 1:54 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Jeremy Fitzhardinge, (Wed Aug 22, 5:54 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, James Courtier-Dutton, (Wed Aug 22, 6:15 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Chris Wright, (Wed Aug 22, 6:20 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, James Courtier-Dutton, (Wed Aug 22, 6:29 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Jeremy Fitzhardinge, (Wed Aug 22, 7:14 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Andi Kleen, (Wed Aug 22, 8:47 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Chris Wright, (Wed Aug 22, 6:34 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, H. Peter Anvin, (Wed Aug 22, 2:00 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Zachary Amsden, (Wed Aug 22, 2:03 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Pavel Machek, (Fri Aug 24, 8:20 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Avi Kivity, (Wed Aug 22, 1:34 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Zachary Amsden, (Wed Aug 22, 1:40 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Avi Kivity, (Wed Aug 22, 4:37 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Zachary Amsden, (Wed Aug 22, 12:16 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Rusty Russell, (Wed Aug 22, 2:25 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Benjamin Herrenschmidt, (Mon Aug 27, 1:54 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Zachary Amsden, (Tue Aug 28, 2:51 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Benjamin Herrenschmidt, (Tue Aug 28, 7:18 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Andi Kleen, (Wed Aug 22, 6:35 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Avi Kivity, (Wed Aug 22, 5:51 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Andi Kleen, (Wed Aug 22, 7:08 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Andi Kleen, (Wed Aug 22, 6:22 am)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Zachary Amsden, (Wed Aug 22, 12:48 pm)

Re: [PATCH] Add I/O hypercalls for i386 paravirt, Andi Kleen, (Wed Aug 22, 1:59 pm)

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