On 05/03/2019 14:25, Jan Beulich wrote:
> With "pcid=no-xpti" and opposite XPTI settings in two 64-bit PV domains
> (achievable with one of "xpti=no-dom0" or "xpti=no-domu"), switching
> from a PCID-disabled to a PCID-enabled 64-bit PV domain fails to set
> CR4.PCIDE in time, as CR4.PGE would not be set in either (see
> pv_guest_cr4_to_real_cr4(), in particular as used by write_ptbase()),
> and hence the early CR4 write would be skipped.
> 
> Signed-off-by: Jan Beulich <jbeul...@suse.com>

Release-acked-by: Juergen Gross <jgr...@suse.com>


Juergen

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