 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] regression from c/s 22071:c5aed2e049bc (ept: Put locks a
| To: | Jan Beulich <JBeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] regression from c/s 22071:c5aed2e049bc (ept: Put locks around ept_get_entry) ? |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Thu, 16 Dec 2010 20:34:50 +0000 |
| Cc: | George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Thu, 16 Dec 2010 12:35:37 -0800 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:user-agent:date :subject:from:to:cc:message-id:thread-topic:thread-index:in-reply-to :mime-version:content-type; bh=MM/8D4xa0ajnH+hVWIzwCLFZDjBnSxTigKGpILlLHTw=; b=ddmQtAGJySfQztLeURRPPXBfM6fgNrPw0qzfVaOaxQxBqcC0eFmEccH6slgJBh6uiv AuDjd19FiMJQzfJVaQTq6gq6qrU5XXdxcYXAGYsUfjSnHNBGgSPkDy5cOa1eywT5q3jM U8xRWU5pusBmdZTY4FGzyuwI7aIA0vlXZueYU= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:user-agent:date:subject:from:to:cc:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type; b=lAkZ8UlBJOakO7CY/GZAEMi1QWRjF06MHK7U5L65fDUG4KDeWgNEiaHykYqL6RXv31 iazSE6wsjD2DyRTf3BzBgrm8sBKO7VjyU6SarTA7uv/GJ2b7sIlYTAggUJwLJLItTLys XuxKjOJGsisM+I3K5w87jLos9GPCo5QeA6q5g= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <C92FF6CF.295FC%keir@xxxxxxx> |
| 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> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcudQx57xcyHiSTYCk6266TOuiPtnAAHZEzX |
| Thread-topic: | [Xen-devel] regression from c/s 22071:c5aed2e049bc (ept: Put locks around ept_get_entry) ? |
| User-agent: | Microsoft-Entourage/12.27.0.100910 |
On 16/12/2010 17:03, "Keir Fraser" <keir@xxxxxxx> wrote:
> On 16/12/2010 16:50, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
>
>>> approach therefore. Perhaps *(volatile type *)px = x or, really, even better
>>> I should define some {read,write}_atomic{8,16,32,64} accessor functions
>>> which use inline asm to absolutely definitely emit a single atomic 'mov'
>>> instruction.
>>>
>>> Make sense?
>>
>> Yes.
>
> Excellent. I will lay groundwork and fix pte_{read,write}_atomic directly in
> -unstable and -4.0-testing. I will then post a proposed fix for EPT to the
> list. I don't know that code so well and I may not otherwise catch all
> places that require use of the new accessor macros.
Attached is a patch I've knocked up for p2m-ept.c. I don't know how complete
it really is. Perhaps someone (George?) would like to Ack it as is, or
develop it further.
-- Keir
> -- Keir
>
>> Jan
>>
>
>
_______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| Previous by Date: | Re: [Xen-devel] Xen 4.0.1 "xc_map_foreign_batch: mmap failed: Cannot allocate memory", Keir Fraser |
|---|---|
| Next by Date: | Re: [Xen-devel] Xen 4.0.1 "xc_map_foreign_batch: mmap failed: Cannot allocate memory", Charles Arnold |
| Previous by Thread: | Re: [Xen-devel] regression from c/s 22071:c5aed2e049bc (ept: Put locks around ept_get_entry) ?, Keir Fraser |
| Next by Thread: | Re: [Xen-devel] regression from c/s 22071:c5aed2e049bc (ept: Put locks around ept_get_entry) ?, Tim Deegan |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
