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-devel

[Xen-devel] Xen and AMD: VMExit on int 0x80 and 64bit case.

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Xen and AMD: VMExit on int 0x80 and 64bit case.
From: Necrosoft <necrosoft82@xxxxxxxxx>
Date: Mon, 23 Jun 2008 10:29:52 +0200
Delivery-date: Mon, 23 Jun 2008 01:30:14 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type; bh=70BV8ucDSvzhR/m1kOrkmut90n6nenkOlJjVMgIAOeU=; b=fWNTNkR/U/KN4XJ9FeUubUFqo7MqVkvPPl2zHppyLt2WbiBHJkMj4ny+uFa8dxKtt2 IiQCeDYDVS7bkT65+wvZcl8xEvANUSdyhbA2H3hbf5hvGMDkfd9R2X/a+yF8pAOqU3+h 296tpdBi+UvOdveQgyXIHrEPS8S6iGguETz7c=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=qRcPzGKQ4y9wtYGgYrJyMnpVz64G+A3k1Y+l33sPja/3PdVSDnURdczSPICDwZ5Jnz 00bEIG5DCbkG9Lag6OdFLvcj3gz3UI/rBWhDg9SPMzJyZalIns4sli3zFg6AV0r/+DH3 ejGM+VdUlqunqbvFrgFNQlVEn40OwLinKAJoU=
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
Hi

I'm looking through xen-devel archive and I found an old mail (2007) wich speaks about "VMExit forcing" in AMD/HVM architecture for some "events". M. Williamson said: "It it possible to arrange for a VMEXIT to occur on int 0x80". I would ask you if you know an example or others informations witch may clarify this kind of trick.

I think that this is not required for 64bit-Xen and 32bit/64bit PV-Guest because Xen must intercept all int 0x80 directly, right? In this cases I can hook this event only through ENTRY(int80_direct_trap)
(x86_64/entry.S) procedure or there is another "high level procedure"?

Thanks you very much!

Bye

Dario
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] Xen and AMD: VMExit on int 0x80 and 64bit case., Necrosoft <=