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Re: [Xen-devel] PAE, Elf headers, and Extended CR3 registers
| To: | Randy Thelen <rthelen@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] PAE, Elf headers, and Extended CR3 registers |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Thu, 14 Sep 2006 15:42:02 +0100 |
| Delivery-date: | Thu, 14 Sep 2006 07:40:55 -0700 |
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| Thread-index: | AcbYC/ChLv6Vt0P/EduN2wAX8io7RQ== |
| Thread-topic: | [Xen-devel] PAE, Elf headers, and Extended CR3 registers |
| User-agent: | Microsoft-Entourage/11.2.5.060620 |
On 14/9/06 08:40, "Randy Thelen" <rthelen@xxxxxxxxxx> wrote: > I'm trying to figure out why it makes sense to assume that if the elf > header notes are present and they indicate the use of PAE then an > extended CR3 register is present. [extended-cr3] was only needed to provide backward compatibility for old guests that do not grok the extended cr3 format. None of those older guests support this new Elf notes format (since the new format is much newer than the introduction of extended-cr3 format). So if the guest uses Elf notes then it is implicit that it understands extended cr3 format and there is no need to state that explicitly. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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