| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
[Xen-devel] Re: [PATCH 5 of 7] x86/paravirt: add register-saving thunks
|
To: |
Andi Kleen <andi@xxxxxxxxxxxxxx> |
|
Subject: |
[Xen-devel] Re: [PATCH 5 of 7] x86/paravirt: add register-saving thunks to reduce caller register pressure |
|
From: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
|
Date: |
Fri, 06 Feb 2009 08:37:21 -0800 |
|
Cc: |
Zachary Amsden <zach@xxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Ian Campbell <ian.campbell@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Ravikiran Thirumalai <kiran@xxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx> |
|
Delivery-date: |
Fri, 06 Feb 2009 08:37:51 -0800 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<87fxisvxb9.fsf@xxxxxxxxxxxxxxxxx> |
|
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/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
References: |
<patchbomb.1233182100@xxxxxxxxxxxxxxxxx> <7d4a052c499dbfe5e816.1233182105@xxxxxxxxxxxxxxxxx> <87fxisvxb9.fsf@xxxxxxxxxxxxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
User-agent: |
Thunderbird 2.0.0.19 (X11/20090105) |
Andi Kleen wrote:
I had something like this (but not as generic) for the old pre
unification semaphores on x86-64 too. I think it's a generally useful
facility for lots of things (in fact I've been asking gcc developers
for providing this in a general way for some time).
What other users do you have in mind?
So I would suggest to move the necessary macros to do that outside
paravirt.h into a separate include so that it can be used independently
and not call it PV_*.
That wouldn't be too hard to do, but I don't think its something we
should do lightly. There are quite a few pitfalls, and the bugs can get
pretty obscure. It would also mean bringing out a lot of the PV_CALL
machinery, and I'm not sure we really want to give that too much
exposure in the light of day.
J
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread> |
- [Xen-devel] Re: [PATCH 5 of 7] x86/paravirt: add register-saving thunks to reduce caller register pressure,
Jeremy Fitzhardinge <=
|
|
|
| |
|
Home