linux-kernel - Re: [PATCH] MIPS: reserve the memblock right after the kernel

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Message-ID: <e1c594d7-d746-d0ce-2c55-fa3169f9bef1@nokia.com>
Date:   Tue, 17 Nov 2020 10:41:44 +0100
From:   Alexander Sverdlin <alexander.sverdlin@...ia.com>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        linux-mips@...r.kernel.org, Paul Burton <paulburton@...nel.org>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] MIPS: reserve the memblock right after the kernel

Hello Serge,

On 16/11/2020 23:31, Serge Semin wrote:
>> As completely unrelated optimization I can remove the same memblock_add() of the
>> kernel sections from the Octeon platform code. 
> Why not as long as it will work. AFAICS the octeon platform code does
> some kernel start address adjustment while the generic MIPS code
> doesn't. Are you sure using the generic version for octeon won't cause
> any problem?

as I interpret this adjustment, this is open-coded virt_to_phys.
In my tests both code blocks reserve the same memory (well, generic code claims the rest of the last page,
and I'm going to fix this).

-- 
Best regards,
Alexander Sverdlin.