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Implement better vunmap() functionality; Enable NULL address (0 MFN) handling #312

Merged
merged 5 commits into from
Nov 14, 2023
Merged

Implement better vunmap() functionality; Enable NULL address (0 MFN) handling #312

merged 5 commits into from
Nov 14, 2023

Commits on Nov 14, 2023

  1. mm,vmm: implement critical section via spin lock 

    Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
    @wipawel
    wipawel committed Nov 14, 2023
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  2. arch,pt: enable (void *) 0 address mapping 

    Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
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    wipawel committed Nov 14, 2023
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  3. arch,pt,pmm: mark frames used for pagetables 

    Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
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    wipawel committed Nov 14, 2023
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  4. arch,pt: implement better vunmap() functionality 

    Previous naive implementation was creating new pagetable entries when
no such mapping had been created.
It wasn't also taking into account the order of the mapping, assuming
all mappings were 4K.

Also, return unmapped MFN and page order to let the caller handle
corresponding frame.

Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
    @wipawel
    wipawel committed Nov 14, 2023
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  5. arch,pt: issue debug vmap/vunmap prints outside of CS 

    Signed-off-by: Pawel Wieczorkiewicz <[email protected]>
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    wipawel committed Nov 14, 2023
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