Messages in this thread | | | Date | Sat, 23 Sep 2023 19:46:00 +0200 | Subject | Re: [PATCH v3 1/3] dt-bindings: reserved-memory: rmtfs: Allow guard pages | From | Krzysztof Kozlowski <> |
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On 21/09/2023 04:37, Bjorn Andersson wrote: > On some Qualcomm platforms the firwmare, or hardware, does not > gracefully handle memory protection of the rmtfs memory region when > placed adjacent to other protected region. Some DeviceTree authors have > worked around this issue by explicitly reserving the space around the > region, but this prevents such author to use rely on the OS to place the > region, through the use of "size" (instead of a fixed location). >
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> + > + When this is set, the first and last 4kB should be left unused, and the > + effective size of the region will thereby shrink with 8kB.
Maybe we should not reference the actual size (4 and 8 kB), but rather page - "the first and last pages in mapping should be left unused ..." etc?
Best regards, Krzysztof
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