Heap Improvements #364
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Heap Improvements #364
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The upcoming SMMTT implementation will require some larger contiguous memory regions for the memory tracking tables. We plan to specify the memory region for these tables as a reserved-memory node in the device tree, and then dynamically allocate individual tables out of this region. These changes to the SBI heap allocator will allow us to explicitly create and allocate from a dedicated heap tied to the table memory region.
This change adds a simple implementation of sbi_memalign(), for future use in allocating aligned memory for SMMTT tables.
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We have mailing list based patch review so it would be great if you can send these patchs to OpenSBI mailing list. You need to join OpenSBI mailing list using following link Make sure you use "git send-email" to send the patches. Thanks for your contribution to OpenSBI project. |
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This PR includes two changes to the SBI heap implementation, primarily to enable future work on the SMMTT implementation. First, it enables allocations from multiple independent heaps on separate memory regions. Then, it adds a simple implementation for
sbi_memalignfor use in allocating aligned memory.See the individual commit messages in this PR for more technical details.