path: root/Documentation
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authorKyle Roeschley <kyle.roeschley@ni.com>2016-10-31 11:26:17 -0500
committerMichal Simek <michal.simek@xilinx.com>2016-11-14 16:07:58 +0100
commit7a3cc2a7b2c723aa552028f4e66841cec183756d (patch)
tree09cb49bc5ac4c1457c7fa03acd955eba7a09e7e0 /Documentation
parent1001354ca34179f3db924eb66672442a173147dc (diff)
ARM: zynq: Reserve correct amount of non-DMA RAM
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>
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