|
xen-devel
Re: [Xen-devel] Re: Next steps with pv_ops for Xen
|
To: |
Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
|
Subject: |
Re: [Xen-devel] Re: Next steps with pv_ops for Xen |
|
From: |
Gerd Hoffmann <kraxel@xxxxxxxxxx> |
|
Date: |
Wed, 05 Dec 2007 21:06:08 +0100 |
|
Cc: |
Derek Murray <Derek.Murray@xxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Eduardo Habkost <ehabkost@xxxxxxxxxx>, Juan Quintela <quintela@xxxxxxxxxx>, "Stephen C. Tweedie" <sct@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, Glauber de Oliveira Costa <gcosta@xxxxxxxxxx>, Chris Wright <chrisw@xxxxxxxxxxxx>, "virtualization@xxxxxxxxxxxxxx" <virtualization@xxxxxxxxxxxxxx> |
|
Delivery-date: |
Wed, 05 Dec 2007 12:06:53 -0800 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<C37C979D.19732%Keir.Fraser@xxxxxxxxxxxx> |
|
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> |
|
References: |
<C37C979D.19732%Keir.Fraser@xxxxxxxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
User-agent: |
Thunderbird 2.0.0.9 (X11/20071115) |
>> Alternatively, could we use the _PAGE_GNTTAB PTE flag that is used for
>> debugging? Indeed, if we did this, could be obviate the need for the
>> PTE-zapping hook, by instead catching the case where this flag is set,
>> and unmapping the grant implicitly?
>
> Well, in the general case you don't have enough info to know which grant to
> release (a single page can be granted multiple times).
You'll also get the mm and the addr which should make it sufficiently
unique, so this looks like a doable approach to me.
ptep_get_and_clear_full() in include/asm-x86/pgtable_32.h needs to be
changed take care, but that should be possible to do and the change is
local to x86 paravirt_ops, which looks much better to me than touching
generic mm code.
cheers,
Gerd
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread>
|
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, (continued)
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Keir Fraser
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Keir Fraser
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Keir Fraser
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Isaku Yamahata
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Keir Fraser
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Isaku Yamahata
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen,
Gerd Hoffmann <=
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Geoffrey Lefebvre
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Gerd Hoffmann
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Keir Fraser
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Jeremy Fitzhardinge
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Derek Murray
- Re: [Xen-devel] Re: Next steps with pv_ops for Xen, Ian Main
|
|
|
Home