Reserve multiboot physical memory#344
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wipawel merged 1 commit intoDec 4, 2024
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Just realized there might be an issue when there is no multiboot image since the range would then be the empty range at 0 and block the first physical memory page. |
wipawel
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wipawel
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Dec 3, 2024
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In the future, we probably should add another flag reserved to the frame_t and handle it properly in the PMM. Then, maybe instead of skipping the frames, we could create them and reserve (consume) them immediately. Same should apply to all the memory regions reported as reserved by multiboot, ACPI and others. |
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Add a reserved regions feature to regions.c. Reserved memory regions are prohibited from being used as frames by pmm. Currently, the only reserved region is the multiboot memory. Signed-off-by: Sandro Rüegge <rueegges@ethz.ch>
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wipawel
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Fixes #342 by passing the multiboot memory range to the physical memory manager. The physical memory manager then skips any memory overlapping with the multiboot memory range.