Bug 209601

Summary: wish there was a non-PAE Xen kernel
Product: [Fedora] Fedora Reporter: Russell Coker <russell>
Component: kernel-xenAssignee: Xen Maintainance List <xen-maint>
Status: CLOSED WONTFIX QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 6CC: bstein, vedran
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Hardware: All   
OS: Linux   
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Last Closed: 2006-10-06 13:12:18 UTC Type: ---
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Description Russell Coker 2006-10-06 11:17:11 UTC
The kernel-xen package is compiled with PAE support.  This means that machines 
such as my Pentium-M laptop can not run Xen.

Comment 1 Daniel Berrangé 2006-10-06 13:12:18 UTC
There is a very tricky situation with Xen on i386 & PAE. You basically have to
have a matched stack, either all PAE, or all non-PAE - you can't mix & match. 
Since PAE is needed for machines with > 4 GB ram, and all current CPUs do now
have PAE (even current laptop targetted CPUs), in FC6 the decision was made to
go for PAE kernels. Unfortunately this excludes some older laptops without PAE.


Comment 2 Vedran Miletić 2006-10-13 17:47:38 UTC
Does matched stack mean that you need to compile all xen-relevant packages
compiled with or without PAE support? If that's the case, then I understand the
decision, but if it's not, then it would be better to have kernel-xen and
kernel-xenPAE instead of what we currently have.

Comment 3 Stephen Tweedie 2006-10-13 18:09:38 UTC
No, it's only the kernel-xen package that matters (that package includes both
the kernel and the hypervisor, which are the only two components that care about
PAE status.)  But the PAE choice in paravirtualised guests MUST match that in
the dom0 host.