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Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_con

from [David Edmondson]

[Permanent Link][Original]

To:	Jan Beulich <jbeulich@xxxxxxxxxx>
Subject:	Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region()
From:	David Edmondson <dme@xxxxxxx>
Date:	Fri, 9 Mar 2007 12:58:00 +0000
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On Fri, Mar 09, 2007 at 12:45:27PM +0000, Jan Beulich wrote:
> I understand that, but what I wanted clarification on is whether this is
> only for performance, not for correctness (and performance would still
> suffer if the allocation turns out to be beyond the physical reach of the
> particular NIC).

For performance, I believe (though it's difficult to know with so many
Linux drivers).  On Solaris the DDI DMA framework would "sort it all
out"...

dme.

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[Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region(), Jan Beulich Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region(), David Edmondson Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region(), Jan Beulich Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region(), David Edmondson <= Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region(), Keir Fraser Re: [Xen-devel] 3.0.4 (and earlier): skbuff_ctor() use of xen_create_contiguous_region(), Keir Fraser

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