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Map the page directory to the last page table. This allows the kernel to
access every page table on the system from the address 0xFFC00000 plus
an offset.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Make a temporary mapping for a alloc'd page in init_page_table. This
ensures that the mapping is firmly inside the page table set aside for
page accounting structures.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Remove a reference to a non-existant header file in an include
statement.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Fix several triple-faulting bugs in the paging initialization routines.
These include causing a page fault during physical memory manager
initialization, causing a page fault during paging initialization and
other double-faulting and triple-faulting bugs.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add the mostly finished physical memory allocator and expose its
functions to the paging system.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Clean up everything in the i386 arch directory. This code has been in
dire need of refactoring for a long while. All the inline assembly
functions and the data structures related to the architecture should be
placed into their own header file. Now the scheduler can access
registers and ISRs without having to deal with arch-specific code.
Signed-off-by: Danny Holman <dholman@gymli.org>
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The VMM should control the physical memory as well as paging. This
allows the VMM to grab frames as it sees fit.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add a proper page control API. These functions allow the kernel to
directly map and unmap pages in the logical address space.
Signed-off-by: Danny Holman <dholman@gymli.org>
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