RE: [Xen-devel] dom0 pvops crash

[Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>]

> Here's the hacky fix from last summer:
> http://lists.xensource.com/archives/html/xen-devel/2009-06/msg00519.html
> 
> On my testbox I can trigger that bug just by compiling a kernel in dom0.
> 
> CONFIG_HIGHPTE=n is stable for me, while CONFIG_HIGHPTE=y most probably
> makes dom0 crash during a kernel compile.
> 
> (dom0 and Xen are 32bit PAE)

Even if it worked reliably, CONFIG_HIGHPTE performance would be miserable: It 
takes an operation that is always going to be slow on any virtualized system 
(updating PTEs), and pounds the cr*p out of it...

Ian

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