WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-ia64-devel

Re: [Xen-ia64-devel] Re: [PATCH] fix vmx_vcpu_flush_tlb_all()

To: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
Subject: Re: [Xen-ia64-devel] Re: [PATCH] fix vmx_vcpu_flush_tlb_all()
From: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Date: Fri, 1 Aug 2008 11:16:25 +0900
Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 31 Jul 2008 19:16:31 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <7kr6991psq.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-ia64-devel-request@lists.xensource.com?subject=help>
List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>
List-post: <mailto:xen-ia64-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-ia64-devel>, <mailto:xen-ia64-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-ia64-devel>, <mailto:xen-ia64-devel-request@lists.xensource.com?subject=unsubscribe>
References: <20080731111333.GG551%yamahata@xxxxxxxxxxxxx> <7kr6991psq.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mutt/1.5.6i
On Fri, Aug 01, 2008 at 10:34:29AM +0900, Kouya Shimura wrote:
> I think that calling ptc_ga_remote_func() during __thash_purge_all()
> is harmless.
> Because all that ptc_ga_remote_func() does is to set the 
> invalid value(1UL << 63) to a tag in vcpu->arch.vtlb. 
> It doesn't affect __thash_purge_all() at all.

Thanks for review.
Looking the code more carefully, I agree with you.


> __thash_purge_all() takes over 10 milliseconds. 
> IMHO, it's not so good to disable interrupts for such a long period.

Yes, 10msec is quite long.


-- 
yamahata

_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ia64-devel

<Prev in Thread] Current Thread [Next in Thread>