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Re: [PATCH 1/2] x86: drop unnecessary page table walking in compat r/o M2P handling

On Wed, Apr 15, 2020 at 10:23:31AM +0200, Jan Beulich wrote:
> We have a global variable where the necessary L2 table is recorded; no
> need to inspect L4 and L3 tables (and this way a few less places will
> eventually need adjustment when we want to support 5-level page tables).
> Also avoid setting up the L3 entry, as the address range never gets used
> anyway (it'll be dropped altogether in a subsequent patch).
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Wei Liu <wl@xxxxxxx>



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