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    SubjectRe: [PATCH v2 11/25] powerpc/8xx: map 16M RAM at startup
    On Tue, Sep 22, 2015 at 06:50:50PM +0200, Christophe Leroy wrote:
    > On recent kernels, with some debug options like for instance
    > CONFIG_LOCKDEP, the BSS requires more than 8M memory, allthough
    > the kernel code fits in the first 8M.
    > Today, it is necessary to activate CONFIG_PIN_TLB to get more than 8M
    > at startup, allthough pinning TLB is not necessary for that.
    >
    > This patch adds a second 8M page to the initial mapping in order to
    > have 16M mapped regardless of CONFIG_PIN_TLB, like several other
    > 32 bits PPC (40x, 601, ...)
    >
    > Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
    > ---

    Is the assumption that nobody is still running 8xx systems with only 8
    MiB RAM on current kernels?

    -Scott


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