Re: [Xen-devel] [PATCH] xen/x86: use 64 bit mask when masking away mfn bits

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 24.03.17 at 09:50, <jgross@xxxxxxxx> wrote:
> When using _PAGE_PSE_PAT as base for a negated bit mask make sure it is
> propagated to 64 bits when applied to a 64 bit value.
> 
> There seems to be only one place where this is a problem, so fix this
> by casting _PAGE_PSE_PAT to 64 bits there.
> 
> Not doing so will probably lead to problems on hosts with more than
> 16 TB of memory.
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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