d82ba37de8
feat(mapper/remap_with_full): conditional remap
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This commit modifies the transform function (`f`) argument of
`remap_with_full` to return an `Option`. This allows the caller to skip
remaps based on the previous frame and page flags. It can alternatively
be done by first translating the address and then remapping based on
that but that would mean we have to walk the page tables twice :|
Signed-off-by: Anhad Singh <andypython@protonmail.com >
2026-02-19 19:50:00 +11:00
f299c885e6
feat(lib): implement Debug for PhysicalAddress
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Make it consistent with the debug output for `VirtualAddress`
Signed-off-by: Anhad Singh <andypython@protonmail.com >
2026-02-19 19:32:10 +11:00
d33fc3b5b0
Merge branch 'mmu_flags' into 'master'
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Set RISCV MMU marker flags by default
See merge request redox-os/rmm!18
2025-12-09 06:28:44 -07:00
5b149b7fe4
Set RISCV MMU marker flags by default
2025-12-09 06:28:44 -07:00
409a1c02f5
Derive Hash for PhysicalAddress
2025-11-12 07:36:54 -07:00
7e14945bc5
Merge branch 'stable' into 'master'
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Remove all nighly feature gates
See merge request redox-os/rmm!17
2025-10-26 09:18:30 -06:00
075d52f153
Fix example binary
2025-10-26 11:58:43 +01:00
e6d42dda19
Fix compilation of EmulateArch
2025-10-26 11:55:42 +01:00
5b5bbe5643
Remove VirtualAddress::is_canonical
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This way the last remaining feature gate can be removed. It also matches
how other architectures handle this functionality.
2025-10-25 20:02:55 +02:00
e371f47f51
Remove let_chain feature gate
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It is now stable.
2025-10-25 20:01:32 +02:00
5f983a02fe
Merge branch 'edition_2024' into 'master'
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Update to the 2024 edition
See merge request redox-os/rmm!16
2025-09-10 08:40:36 -06:00
08c00a434d
Update to the 2024 edition
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On newer rustc versions let_chain is only allowed with the 2024 edition.
2025-09-10 15:37:19 +02:00
63669069f4
Merge branch 'bump_fix' into 'master'
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Fix a bump allocator error
See merge request redox-os/rmm!15
2024-10-22 21:26:17 +00:00
91ccf4e6aa
Fix a bump allocator error
2024-10-22 22:14:39 +03:00
edb3a87578
Merge branch 'riscv' into 'master'
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Fixes and changes to make RISC-V paging work
See merge request redox-os/rmm!14
2024-09-24 12:51:39 +00:00
ed8bcfca1f
Add write combining page flags where applicable
2024-09-24 08:26:02 +03:00
192dd8283f
RISC-V: implement TLB flush
2024-09-24 08:26:01 +03:00
f51cd00f00
Remove read/write flags from common PDE flags.
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RISC-V convention marks PDE with no read/write/execute, so we can't have none of this flags set there. Remove their setting from PDE handling code and instead set them as appropriate in arch-specific defaults.
Also enable both readonly and readwrite flags to be non-zero (as long as their intersection completely masks both of them), as required for RISC-V PTE handling.
2024-09-24 08:24:18 +03:00
a96ea6f5f3
Allow physical address bits be anywhere in PTE entry
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Before this commit, RMM assumed base physical address was presented in PTE as is, i.e. physical page address was shifted exactly to PAGE_SHIFT, so physical address can be extracted from PTE by simply masking off some bits and can be placed in PTE by simple addition/OR.
This is not the case for RISC-V which has 4Kb base page so 12 bits PAGE_SHIFT, yet physical page address is only shifted 10 bits in PTE.
This commit removes this assumption.
NOTE: This commit changes meaning of constants:
* ENTRY_ADDRESS_SIZE from "total physical size in bytes" to "total physical size in PAGES"
* ENTRY_ADDRESS_MASK from "mask of physical bits in PTE" to "mask of physical bits starting at bit 0"
2024-09-23 08:47:27 +03:00
b7d3acf606
Separate leaf page and directory pages USER flag
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This is required for RISC-V. Privileged spec says:
> For non-leaf PTEs, the D, A, and U bits are reserved for future standard use.
> Until their use is defined by a standard extension, they must be cleared by software
> for forward compatibility.
QEMU fails address translation if it sees any of these flags set on non-leaf page entry.
2024-09-23 08:47:23 +03:00
bb27f57228
Merge branch 'fix_bump' into 'master'
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Fix bump allocator initialization
See merge request redox-os/rmm!13
2024-09-22 13:20:33 +00:00
d95ea6598f
Fix bump allocator.
2024-09-22 10:27:06 +02:00
5f9a587968
Convert repr(packed) to repr(C, packed).
2024-09-08 20:48:05 +02:00
ea4cfb2cbf
Merge branch 'fix' into 'master'
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Revived tests
See merge request redox-os/rmm!12
2024-09-02 21:16:38 +00:00
7c0995ee24
Revived tests
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Also fixed debug build failure on i686, and reformatted the code
2024-07-12 21:10:37 +03:00
99fcfc5fae
Skip insufficiently large bump alloc regions.
2024-04-11 22:02:44 +02:00
5e75df56c5
More BumpAllocator APIs.
2023-12-18 11:16:15 +01:00
ed455915ca
Allow arbitrary bump allocation size.
2023-12-18 11:16:11 +01:00
d7d824552b
Merge branch 'derive_hash_virtual_address' into 'master'
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Derive Hash for VirtualAddress
See merge request redox-os/rmm!11
2023-12-13 00:10:02 +00:00
aad492f805
Derive Hash for VirtualAddress
2023-12-12 22:21:22 +01:00
a992ae89ed
Merge branch 'mmu' into 'master'
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Demand paging related improvements
See merge request redox-os/rmm!10
2023-08-01 13:51:37 +00:00
86aba2dbe5
Better VirtualAddress Debug impl.
2023-07-28 13:39:32 +02:00
b5937b7b91
Set aarch64 "not global" flag by default.
2023-07-28 13:38:39 +02:00
8e22e69c94
Add remap_with{,_full}.
2023-07-17 13:31:51 +02:00
0aa7fea250
Fix remap bug: require present before remapping.
2023-07-17 13:31:46 +02:00
eaab222011
Merge branch 'fix_is_global' into 'master'
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Fix is_global.
See merge request redox-os/rmm!9
2023-07-16 16:36:55 +00:00
339984e49b
Fix is_global.
2023-07-16 18:32:34 +02:00
e24e8485ba
Merge branch 'aarch64-stuff' into 'master'
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Add GLOBAL flag and prettify some stuff
See merge request redox-os/rmm!8
2023-06-12 12:12:09 +00:00
d89e6008e8
Add GLOBAL flag and prettify some stuff
2023-06-12 10:23:40 +00:00
7aeb9f0ac8
Remove rust-toolchain
2023-02-11 14:50:26 -07:00
81b03cc693
Improve aarch64 tlb flushing
2022-08-28 09:19:07 -06:00
27bb8e44dd
Do not allow phys_to_virt overflow
2022-08-26 11:07:21 -06:00
61ba2e6c8e
Fix unmap_parents
2022-08-22 18:49:32 -06:00
0d4ff5d4f3
Add functions for accessing mapper allocator
2022-08-21 13:20:44 -06:00
df733ed571
Use TableKind for most table operations
2022-08-20 13:00:48 -06:00
c5eb435d79
Match PHYS_OFFSET accross archs
2022-08-19 20:53:15 -06:00
e05868e1dc
Improve aarch64 paging instructions
2022-08-19 19:52:00 -06:00
e9950ee6da
Fix more warnings
2022-07-29 18:53:12 -06:00
23d4995e50
Fix warnings
2022-07-29 18:37:37 -06:00
5700899e9a
Merge branch 'migrate_kernel_to_rmm' into 'master'
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Add necessary functionality for migrating kernel paging code to RMM
See merge request redox-os/rmm!6
2022-07-27 15:10:52 +00:00
Anhad Singh