On Sun, Oct 4, 2020 at 11:09 AM Ard Biesheuvel [off-list ref] wrote:

OK, booting now - turns out the switch back to swapper_pg_dir needs a
proper TLB flush as well.

Wow this is so nice, thanks a ton Ard!!

I folded this into my kasan init patch.

The first change avoids reallocating KASAN blocks when a range gets
mapped twice - this occurs when mapping the DTB space explicitly
(although I am not sure that that is still needed now that you move
the DTB)

Sooner or later someone is going to make this happen anyway
so better be safe than sorry.

Thanks!!
Linus Walleij

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