linux-kernel - Re: [PATCH v2] powerpc: fix boot on BOOK3S_32 with CONFIG_STRICT_KERNEL

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Date:   Wed, 22 Nov 2017 09:22:51 +1100
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     Meelis Roos <mroos@...ux.ee>,
        Christophe Leroy <christophe.leroy@....fr>
Cc:     Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Scott Wood <oss@...error.net>,
        Balbir Singh <bsingharora@...il.com>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v2] powerpc: fix boot on BOOK3S_32 with
 CONFIG_STRICT_KERNEL_RWX

On Tue, 2017-11-21 at 19:28 +0200, Meelis Roos wrote:
> For wider powerpc audience: this warning-like INFO bit is present 
> independently of theis patch. Is it dangerous for some configuration?
> 
> INFO: Uncompressed kernel (size 0x5d6c54) overlaps the address of the wrapper(0x400000)
> INFO: Fixing the link_address of wrapper to (0x600000)

Mostly means you need more memory than the old default... I don't think
it's an issue unless you are hitting very small systems or your OF
implementation has that memory occupied.

Ben.