linux-kernel - Re: [PATCH v4 1/2] Revert "powerpc: Set max

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Date:   Mon, 28 Mar 2022 21:37:15 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     npiggin@...il.com, christophe.leroy@...roup.eu,
        songyuanzheng@...wei.com
Subject: Re: [PATCH v4 1/2] Revert "powerpc: Set max_mapnr correctly"

Kefeng Wang <wangkefeng.wang@...wei.com> writes:
> Hi maintainers，
>
> I saw the patches has been reviewed[1], could they be merged?

Maybe I'm just misreading the change log, but it seems wrong that we
need to add extra checks. pfn_valid() shouldn't return true for vmalloc
addresses in the first place, shouldn't we fix that instead? Who knows
what else that might be broken because of that.

cheers