[Xen-devel] Re: [PATCH xen-unstable] Remove PSE flag from guest CR4

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

If you hide PSE in CR4 and CPUID, how does the guest know it can use
superpages?

 -- Keir

On 14/09/2009 18:27, "Dave McCracken" <dcm@xxxxxxxx> wrote:

> 
> When I originally did the Xen hypervisor hugepage patch I also allowed guests
> to see the PSE flag in CR4.  This has proven to be a mistake.  Here is a patch
> to remove that functionality.
> 
> All Linux kernels will still allow userspace hugepages without the flag.
> 
> Dave McCracken



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