* Mapping ram memory using ioremap
@ 2022-05-11 23:00 ` noman pouigt
0 siblings, 0 replies; 2+ messages in thread
From: noman pouigt @ 2022-05-11 23:00 UTC (permalink / raw)
To: linux-kernel, kernelnewbies
We are using part of DRAM as shared memory
between DSP and SoC. However, DSP
can only access higher 1GB of DRAM.
In order to map the aforementioned memory
I tried using ioremap and it blurted out the
warning as mentioned in this article.
https://lwn.net/Articles/409700/
What is the alternative to using ioremap to
map specific RAM memory region for use
in the driver as shared memory?
I tried memremap + reserved memory as well
and it failed.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Mapping ram memory using ioremap
@ 2022-05-11 23:00 ` noman pouigt
0 siblings, 0 replies; 2+ messages in thread
From: noman pouigt @ 2022-05-11 23:00 UTC (permalink / raw)
To: linux-kernel, kernelnewbies
We are using part of DRAM as shared memory
between DSP and SoC. However, DSP
can only access higher 1GB of DRAM.
In order to map the aforementioned memory
I tried using ioremap and it blurted out the
warning as mentioned in this article.
https://lwn.net/Articles/409700/
What is the alternative to using ioremap to
map specific RAM memory region for use
in the driver as shared memory?
I tried memremap + reserved memory as well
and it failed.
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-05-11 23:00 Mapping ram memory using ioremap noman pouigt
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