113cb5ed4e
Ensure pages cannot be both CoW and shared.
2023-07-25 10:52:23 +02:00
d3ecedefd9
Notify schemes when mmaps are unmapped.
2023-07-25 10:52:23 +02:00
02f04752e8
Use proper locks for PageInfo.
2023-07-25 10:52:23 +02:00
7bdf5e9af3
Pass unaligned length to scheme for fmap.
2023-07-25 10:52:23 +02:00
afa3d7dc7b
Support anonymous MAP_SHARED mmaps.
2023-07-25 10:52:23 +02:00
70b4d99c96
Implement MAP_FIXED without MAP_FIXED_NOREPLACE.
2023-07-25 10:52:23 +02:00
f0341280f7
Fix frame deallocation.
2023-07-25 10:52:23 +02:00
3a80528d13
Fix MAP_LAZY mappings.
2023-07-25 10:52:23 +02:00
cbec83215a
Lazy-evaluate pages returned by fmap.
2023-07-25 10:52:22 +02:00
9182722f84
WIP: Allow listing address space grants again.
2023-07-25 10:52:22 +02:00
0466e87e59
Error if scheme fmap returns unaligned address.
2023-07-25 10:52:22 +02:00
ba62c0606e
Pin PhysBorrowed head/tail UserScheme grants too.
2023-07-25 10:52:22 +02:00
329d60848c
WIP: Support CoW fmap.
2023-07-25 10:52:22 +02:00
b24cf821c2
Support transferring grants again.
2023-07-25 10:52:22 +02:00
55f1829e77
Call funmap if applicable.
2023-07-25 10:52:22 +02:00
4ec8712fb0
Adjust fmap offsets in Grant::extract.
2023-07-25 10:52:22 +02:00
c5eb44d968
Increase refcount for borrowed fmap too.
2023-07-25 10:52:22 +02:00
b3a6a6744a
Pin grants that are used in UserScheme.
2023-07-25 10:52:22 +02:00
954a8d00fe
Make page fault handler recursive.
...
This is probably a bad idea, but it works for now, and can only cause
problems, if grants that borrow grants that borrow grants etc., are
used.
2023-07-25 10:52:21 +02:00
da6f6a316c
Return only one grant, External, for Grant::borrow.
2023-07-25 10:52:21 +02:00
b5430359d8
Forbid scheme calls with non-RAM physmapped memory.
2023-07-25 10:52:21 +02:00
43c433a3f0
Remove FmapCtxt.
2023-07-25 10:52:21 +02:00
bf6ad5c41a
Disable debugging again.
2023-07-25 10:52:21 +02:00
8553bc7a59
WIP: Support userspace-backed borrowing mmaps.
2023-07-25 10:52:21 +02:00
024f3e3828
Fix deadlock, booting to shell works now.
2023-07-25 10:52:21 +02:00
ad78dcc5a1
WIP: Rudimentary MAP_SHARED fmap implementation.
2023-07-25 10:52:21 +02:00
afa61601c4
Add ContextStatus::HardBlocked.
2023-07-25 10:52:21 +02:00
23fede5db0
Remove scheme funmap methods.
2023-07-25 10:52:20 +02:00
0c365f54e6
WIP: FmapBorrowed.
2023-07-25 10:52:20 +02:00
20c3adf38d
WIP: Start rewriting fmap impl.
2023-07-25 10:52:20 +02:00
99975c0e42
WIP: Ensure that Grant::borrow does not borrow nonpresent grants.
2023-07-25 10:52:20 +02:00
dffc8ec9fc
Do not expect PageInfo for PhysMap grants.
2023-07-25 10:52:20 +02:00
20a84decdf
Fix MemoryScheme fmap.
2023-07-25 10:52:20 +02:00
15ce84164b
Reminder that borrow does handle "lack of grant".
2023-07-25 10:52:20 +02:00
50e2f51ab3
Remove outdated #[must_use].
2023-07-25 10:52:20 +02:00
f7bffacef0
Implement Drop for AddrSpace.
2023-07-25 10:52:20 +02:00
829d2276fb
Remove Context::vfork.
...
Since clone is no longer exists as a syscall, it makes little sense to
manage vfork in the kernel. Implementing vfork in userspace would still
be possible.
2023-07-25 10:52:20 +02:00
e34a3cee42
Fix mmap/munmap, invert borrowed/owned refcount.
2023-07-25 10:52:19 +02:00
45ec3ecc70
Track Allocated and CoW External the same way.
2023-07-25 10:52:19 +02:00
7aca53753e
Call init_mm from correct function.
2023-07-25 10:52:19 +02:00
a599d9b389
WIP: Store PageInfo in separate data structure.
2023-07-25 10:52:19 +02:00
760fc2ba5a
WIP: Global page info structs.
2023-07-25 10:52:19 +02:00
593e21d95e
Support schemes.
2023-07-25 10:52:19 +02:00
f53a1ffd53
Remove proc:pid/memory.
2023-07-25 10:52:19 +02:00
0a5b6ce656
Reach proc:memory access in userspace.
2023-07-25 10:52:19 +02:00
11fdb3bb46
Copy on writes to CoW pages.
2023-07-25 10:52:19 +02:00
565db7694f
Add cow_refcount.
2023-07-25 10:52:19 +02:00
276f051d19
Further userspace progress, fix RMM bug.
2023-07-25 10:52:18 +02:00
8cfbc39b9f
Get further in userspace.
2023-07-25 10:52:18 +02:00
490e1b2777
WIP: Track grant ownership.
2023-07-25 10:52:18 +02:00
4lDO2