On Wed, Sep 30, 2015 at 05:36:22AM -0600, Jan Beulich wrote:
> Since commit 191b3f3344ee ("p2m/ept: enable PML in p2m-ept for
> log-dirty"), the A and D bits of EPT paging entries are set
> unconditionally, regardless of whether PML is enabled or not. This
> causes a regression in Xen 4.6 on some processors due to Intel Errata
> AVR41 -- HVM guests get severe memory corruption when the A bit is set
> due to incorrect TLB flushing on mov to cr3. The errata affects the Atom
> C2000 family (Avoton).
>
> To fix, do not set the A bit on this processor family.
>
> Signed-off-by: Ross Lagerwall <ross.lagerw...@citrix.com>
>
> Move feature suppression to feature detection code. Add command line
> override.
>
> Signed-off-by: Jan Beulich <jbeul...@suse.com>
>
Release-acked-by: Wei Liu <wei.l...@citrix.com>
Thanks for handling this issue!
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