[U-Boot] efi_loader: Don't allocate from memory holes

[Tom Rini]

On Fri, May 27, 2016 at 12:25:03PM +0200, Alexander Graf wrote:

> When a payload calls our memory allocator with the exact address hint, we
> happily allocate memory from completely unpopulated regions. Payloads however
> expect this to only succeed if they would be allocating from free conventional
> memory.
> 
> This patch makes the logic behind those checks a bit more obvious and ensures
> that we always allocate from known good free conventional memory regions if we
> want to allocate ram.
> 
> Reported-by: Jonathan Gray <jsg at jsg.id.au>
> Signed-off-by: Alexander Graf <agraf at suse.de>

Applied to u-boot/master, thanks!

-- 
Tom
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