45f1c4e29e
Add rustfmt from relibc and apply it with cargo fmt
2024-01-17 13:52:01 -07:00
ee3aafa1d9
Remove PhysBorrowed hacks.
2023-12-15 15:14:40 +01:00
d4a120188f
Ensure PhysBorrowed iff !alloc-owned, vice versa.
...
This is allowed now that the old physalloc/physfree syscalls have been
removed.
2023-12-15 15:14:40 +01:00
a42e406569
Fix contiguous mmap.
2023-12-15 15:14:40 +01:00
77400f63ee
Add a memory: file for phys-contiguous mmaps.
2023-12-15 15:14:36 +01:00
2d065083df
Use HashMap instead of BTreeMap where possible
...
This shrinks the kernel from 905840 bytes to 862408 bytes.
2023-12-13 19:55:20 +01:00
88508a2cb7
Remove as_user_inner.
2023-12-13 11:08:12 +01:00
679c26c03b
s/Arc<dyn KernelScheme>/enum, but deref as dyn.
2023-12-13 11:08:07 +01:00
017702d3d2
Remove a lot of dead code
2023-12-12 15:01:29 +00:00
f025ece614
Replace from/into with get/new when necessary.
2023-09-06 08:38:10 +02:00
8f98d5b987
Extend mremap, eager mappings for real hardware.
2023-08-03 12:37:58 +02:00
c7714992f3
Fix clone_grant_using_fmap test.
2023-08-02 14:17:26 +02:00
2070fa44b7
Fix warnings.
2023-08-02 13:07:49 +02:00
05a9530ac7
Temporarily disable CoW fmaps.
2023-08-01 17:29:36 +02:00
fe88b23d09
Use a single cow zeroed page for RO maps + eager mapping.
2023-08-01 13:11:00 +02:00
ec9c24f841
WIP: aarch64
2023-07-27 19:05:33 +02:00
3cfec39b47
Pass MunmapFlags to scheme.
2023-07-25 10:52:24 +02:00
c9aa5ca851
WIP: Add SYS_MREMAP.
2023-07-25 10:52:24 +02:00
2660c3e07a
WIP: Pin fmap grants that are borrowed too.
...
This might not be the most ideal solution, since a GiB grant can be
EBUSY blocked if a single page is used by an indefinitely-blocking
UserScheme. But, the alternatives would impose lots of additional
complexity, such as increasing the PageInfo size, adding more
refcounting arrays to grants, etc.
2023-07-25 10:52:24 +02:00
e2b736140f
Make PageInfo atomic once again.
2023-07-25 10:52:24 +02:00
d58ddc35fe
Complete PageInfo cleanup.
...
This enables proper CoW ^ shared enforcement, so that e.g. acquiring a
new CoW page from already shared memory, or vice versa, will enforce
that they aren't both simultaneously.
2023-07-25 10:52:23 +02:00
0f1b5b9b6f
WIP: Make cow/shared refcounts mutually exclusive.
2023-07-25 10:52:23 +02:00
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
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
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
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
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
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
Jeremy Soller