Re: [Xen-devel] [PATCH 1/2] x86/xen: don't write ptes directly in 32-bit PV guests

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.08.18 at 07:14, <jgross@xxxxxxxx> wrote:
> In some cases 32-bit PAE PV guests still write PTEs directly instead of
> using hypercalls. This is especially bad when clearing a PTE as this is
> done via 32-bit writes which will produce intermediate L1TF attackable
> PTEs.
> 
> Change the code to use hypercalls instead.
> 
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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