[U-Boot] [PATCH] arm64: zynqmp: Setup MMU map for DDR at run time

Alexander Graf agraf at suse.de
Thu Apr 26 16:02:27 UTC 2018


On 04/26/2018 05:40 PM, Michal Simek wrote:
> On 26.4.2018 17:21, Alexander Graf wrote:
>> On 04/20/2018 09:46 AM, Michal Simek wrote:
>>> From: Nitin Jain <nitin.jain at xilinx.com>
>>>
>>> This patch used for filling the MMU map for DDR at run time based
>>> information read from Device Tree or automatically detected from static
>>> configuration.
>> The sentence above is missing a word somewhere :).
>>
>> Also, the description doesn't actually tell me *why* this change is
>> needed. What is the problem with the current static map? And what
>> exactly changes really with this patch applied?
> It is needed because for systems which has for example 1GB of memory but
> you map 2GB there could be spurious accesses which we have seen in past
> when mapping is not fitting with actual memory installed.

That makes sense. Can you please update the commit message?


Thanks,

Alex



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