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SubjectRe: [PATCH 5.10 051/120] memblock: do not start bottom-up allocations with kernel_end

Greg Kroah-Hartman <> writes:

> From: Roman Gushchin <>
> [ Upstream commit 2dcb3964544177c51853a210b6ad400de78ef17d ]
> With kaslr the kernel image is placed at a random place, so starting the
> bottom-up allocation with the kernel_end can result in an allocation
> failure and a warning like this one:

Not sure if this is ready for stable yet (including stable branches 4.19
and 5.4), since it seems to uncover latent bugs in x86 early memory
reservation. I asked about this issue here:

Thiago Jung Bauermann
IBM Linux Technology Center

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