Re: [PATCH v2 2/2] x86/paging: replace most mfn_valid() in log-dirty handling

[Andrew Cooper <amc96@xxxxxxxx>]

On 06/12/2021 13:25, Jan Beulich wrote:
> Top level table and intermediate table entries get explicitly set to
> INVALID_MFN when un-allocated. There's therefore no need to use the more
> expensive mfn_valid() when checking for that sentinel.
>
> Suggested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>