ARM: zynq: Reserve correct amount of non-DMA RAM

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commit 7a3cc2a7b2 upstream.

On Zynq, we haven't been reserving the correct amount of DMA-incapable
RAM to keep DMA away from it (per the Zynq TRM Section 4.1, it should be
the first 512k). In older kernels, this was masked by the
memblock_reserve call in arm_memblock_init(). Now, reserve the correct
amount excplicitly rather than relying on swapper_pg_dir, which is an
address and not a size anyway.

Fixes: 46f5b96 ("ARM: zynq: Reserve not DMAable space in front of the kernel")
Signed-off-by: Kyle Roeschley <kyle.roeschley@ni.com>
Tested-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Kyle Roeschley 2016-10-31 11:26:17 -05:00 • committed by Greg Kroah-Hartman

parent 78e2d9405e

commit e925eb3426

1 changed files with 1 additions and 1 deletions

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arch/arm/mach-zynq/common.c

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