| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table
|
To: |
<xen-devel@xxxxxxxxxxxxxxxxxxx> |
|
Subject: |
RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table |
|
From: |
"Han, Weidong" <weidong.han@xxxxxxxxx> |
|
Date: |
Mon, 28 Apr 2008 16:08:16 +0800 |
|
Cc: |
"Xu, Anthony" <anthony.xu@xxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx> |
|
Delivery-date: |
Mon, 28 Apr 2008 01:08:47 -0700 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxx |
|
List-help: |
<mailto:xen-devel-request@lists.xensource.com?subject=help> |
|
List-id: |
Xen developer discussion <xen-devel.lists.xensource.com> |
|
List-post: |
<mailto:xen-devel@lists.xensource.com> |
|
List-subscribe: |
<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
Thread-index: |
AcipBwEHv1brQIsNTRuKJeq9R0/dkg== |
|
Thread-topic: |
RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table |
Keir,
Attached patch removes the shared option, and only supports separated
VT-d page table.
Randy (Weidong)
Keir Fraser wrote:
> On 22/4/08 16:43, "Li, Xin B" <xin.b.li@xxxxxxxxx> wrote:
>
>>> Then don't allow EPT 2MB mappings for domains which have passthru
>>> devices?
>>>
>>
>> EPT 2M page is already supported while VT-d 2M not, so for we have to
>> seperate the 2 guys if we want to use 2M page in EPT.
>> and of course we share the page tables if both sides use 4K pages.
>
> Just share the tables and put up with not having 2MB mappings
> available to you if a guest has devices passed through to it? Doesn't
> sound so bad to me, and you can get the performance back down the
> line by fixing the VT-d hardware to understand superpage mappings.
> We're going to end up with a silly number of p2m structures otherwise.
>
> -- Keir
vtd-sep-2.patch
Description: vtd-sep-2.patch
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread> |
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, (continued)
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Han, Weidong
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Ian Pratt
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Han, Weidong
- Re: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Keir Fraser
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Han, Weidong
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Espen Skoglund
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table fromP2M table, Han, Weidong
- RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Li, Xin B
- Re: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Keir Fraser
- Re: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table, Samuel Thibault
RE: [Xen-devel] [PATCH] [VTD] Separate VT-d page table from P2M table,
Han, Weidong <=
|
|
|
| |
|
Home