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200 Commits

Author SHA1 Message Date
Drew Galbraith 20d6d2aaaf [Zion] Introduce the Kernel VMM to centralize allocs. 2023-11-15 15:15:31 -08:00
Drew Galbraith 0b47e3b7fc [Zion] Track used vs free physical memory. 2023-11-15 14:53:05 -08:00
Drew Galbraith 8e95a11907 [Zion] Move the physical memory manager to the LinkedList class. 2023-11-15 14:44:16 -08:00
Drew Galbraith 92d8a02291 [Zion] Cleanup memory debug statistics slightly. 2023-11-15 13:10:53 -08:00
Drew Galbraith 10d16e129f [Zion] Use a slab allocator for 64 byte and 128 byte allocs. 
This has no effect on page usage for now (each uses a small amount of
pages so has some overhead.

However it does reduce the active allocations from
234 -> 146 (64B)
61 -> 51 (128B)
 2023-11-15 13:06:14 -08:00
Drew Galbraith cc16210e90 [Zion] Use slab allocators immediately during heap init. 2023-11-15 13:02:34 -08:00
Drew Galbraith 659f122c9e [Zion] Free memory that was allocated with the slab allocator. 
This reduces the number of active allocs by ~ 200.
Size 8: 142 -> 2
Size 16: 319 > 313
Size 32: 364-> 312
 2023-11-15 12:53:14 -08:00
Drew Galbraith 6d27ee5dc5 [Zion] Add more debug information about kernel heap usage. 
This will be helpful as we work to improve it.

Without deallocations, we currently stand at the following alloc numbers
8 - 142
16 - 319
32 - 364

unsized - 305

total page usage including slabs is 12.
 2023-11-15 12:36:18 -08:00
Drew Galbraith 4657c46f73 [Zion] Fix kernel heap distribution calculation. 2023-11-15 12:14:58 -08:00
Drew Galbraith d71d543b2a [Zion] Move to a kernel slab allocator that will allow easier dealloc. 2023-11-15 12:04:35 -08:00
Drew Galbraith e5568450c2 [Zion] Make kernel slab allocation failures less chatty. 
We started to hit this constraint but the allocators are due for
a redesign that actually does deallocation soon.
 2023-11-15 09:45:37 -08:00
Drew Galbraith 52142afeb8 [Zion] Add proc prefix without allocation 2023-11-14 21:41:35 -08:00
Drew Galbraith fa6a5949b2 [Zion] Pass the framebuffer info to yellowstone init process. 2023-11-09 11:20:41 -08:00
Drew Galbraith 8d10f19312 [Glacier][Zion] Add a fix sized string builder to allow non-alloc debug. 2023-11-09 09:07:32 -08:00
Drew Galbraith 601f29c324 [Glacier] Add a specific VariableStringBuilder for StrFormat. 2023-11-09 08:52:30 -08:00
Drew Galbraith a745f45b5d [Zion] Add a method to dump the bootloader memory regions. 2023-11-08 08:07:57 -08:00
Drew Galbraith 69aced2220 [Zion] Move to StrFormat for debug line. 2023-11-05 09:24:09 -08:00
Drew Galbraith 4af19d010f [Zion] Add an early debug method without allocations. 2023-11-05 08:48:41 -08:00
Drew Galbraith 85564b018d [Zion] Add todo comment for storing memory mappings in the address space. 2023-11-05 05:59:45 -08:00
Drew Galbraith a16dcc2aa9 [Zion] Use a binary tree to store address space mappings. 2023-11-03 19:47:39 -07:00
Drew Galbraith d9df1212b7 [Zion] Pass data to message queue as IpcMessage obj. 2023-11-03 00:37:53 -07:00
Drew Galbraith d7af2e3f4f [Zion] Return the IpcMessage up to the syscall level. 2023-11-03 00:12:28 -07:00
Drew Galbraith d2c77e1d18 [Zion] Move away from storing pointers to IpcMessages. 2023-11-02 23:51:52 -07:00
Drew Galbraith 59f147193a [Zion] Store IPC capabilities in a vector rather than list. 2023-11-02 23:44:15 -07:00
Drew Galbraith 4c09a9d019 [Zion] Move to a general IpcMessage object for Ipc. 2023-11-02 23:40:23 -07:00
Drew Galbraith 277b0d3ccc [Zion] Use the glacier ArrayView class for sending IPC msgs. 2023-11-02 23:31:08 -07:00
Drew Galbraith 1643f7b4cc [Zion] Update FIXME in threading. 2023-11-02 22:36:48 -07:00
Drew Galbraith 78624d5291 [Zion] Immediately schedule enqueued threads if we are sleeping. 2023-11-02 22:28:08 -07:00
Drew Galbraith c63a54d6b1 [Zion] Validate that started threads are in user space. 2023-11-02 22:23:32 -07:00
Drew Galbraith f31652b981 Add a way to restrict permissions on cap duplication. 2023-11-02 22:12:55 -07:00
Drew Galbraith 7dd10a3e53 [Zion] Remove dead ZMessage struct. 2023-11-02 21:57:29 -07:00
Drew Galbraith e66706d381 [Glacier] Convert ErrorCode into an Enum. 2023-11-02 21:55:12 -07:00
Drew Galbraith 4c04f9d561 [Zion] Add a mutex object with appropriate syscalls. 2023-10-25 14:47:45 -07:00
Drew Galbraith 05e12aaa7d [Yellowstone] Move registration service to the main yellowstone service 2023-10-24 23:42:49 -07:00
Drew Galbraith b516087922 [Zion] Add the ability to pass capabilities via endpoint call. 2023-10-24 23:32:05 -07:00
Drew Galbraith 5b781bb394 Update READMEs and TODOs 2023-10-24 22:56:45 -07:00
Drew Galbraith 2b27af5814 [Yellowstone] Move to yunq definition for yellowstone server. 2023-10-24 18:24:26 -07:00
Drew Galbraith ee603b7478 [zion] Add a basic slab allocator to the kernel. 
Don't free from the slab allocator yet but allocations appear to work.
 2023-08-02 00:54:39 -07:00
Drew Galbraith e3a425e274 [zion] Use a separate stack for PF and GP faults in the kernel. 2023-08-01 23:11:12 -07:00
Drew Galbraith 259c64ef2a [zion] Check if scheduler exists in PF handler before trying to resolve 2023-08-01 23:10:20 -07:00
Drew Galbraith 35b1844862 [zion] Move all APIC functions into a global class. 2023-08-01 22:38:40 -07:00
Drew Galbraith f8de60e2dd [zion] Move more initialization into the ApicTimer class. 2023-08-01 21:48:20 -07:00
Drew Galbraith d99624daf6 [zion] Move to using the LAPIC timer over the PIT. 2023-08-01 20:18:47 -07:00
Drew Galbraith f0add6e0c3 [zion] Enforce cap transmit permissions in more places. 2023-08-01 18:43:48 -07:00
Drew Galbraith 4e9ad6a516 [zion] Begin requiring capability transmit permission. 
As a first pass require the permission when passing a capability to a
new process.
 2023-08-01 18:37:20 -07:00
Drew Galbraith f0a27d30be [zion] Enfore Duplication permissions on capabilities. 2023-08-01 18:30:24 -07:00
Drew Galbraith 1364fbed9f [zion] Move to default permissions being supplied by KernelObjects 2023-08-01 18:22:41 -07:00
Drew Galbraith 48c6e5b3a4 [zion] Add a method for duplicating and scoping down VMMOs. 
Use the AHCI section of the PCI config as an example POC of this.

We can now pass a memory capability instead of just the physical
address.
 2023-08-01 17:46:26 -07:00
Drew Galbraith 8f84f8c3ca [zion] Remove temp PCI Memory Object create function. 
Pass the PCI memory space to the yellowstone init process instead.
 2023-08-01 17:13:19 -07:00
Drew Galbraith 847d37addc [zion] Add info about APIC mapping 2023-08-01 11:19:48 -07:00