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[kernel] Use kernel proc space as kernel space

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As mentioned in the last commit, with processes owning spaces, there was
a weird extra space in the "kernel" process that owns the kernel
threads. Now we use that space as the global kernel space, and don't
create a separate one.
This commit is contained in:
Justin C. Miller
2020-09-18 01:58:46 -07:00
parent 671a0ce0fb
commit deb2fa0a09
6 changed files with 42 additions and 21 deletions
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7
src/kernel/memory_bootstrap.cpp
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@@ -9,6 +9,7 @@
#include "frame_allocator.h"
#include "io.h"
#include "log.h"
#include "objects/process.h"
#include "objects/vm_area.h"
#include "page_manager.h"
#include "vm_space.h"
@@ -38,9 +39,6 @@ page_manager &g_page_manager = __g_page_manager_storage.value;
static kutil::no_construct<frame_allocator> __g_frame_allocator_storage;
frame_allocator &g_frame_allocator = __g_frame_allocator_storage.value;
static kutil::no_construct<vm_space> __g_kernel_space_storage;
vm_space &g_kernel_space = __g_kernel_space_storage.value;
void * operator new(size_t size) { return g_kernel_heap.allocate(size); }
void * operator new [] (size_t size) { return g_kernel_heap.allocate(size); }
void operator delete (void *p) noexcept { return g_kernel_heap.free(p); }
@@ -111,7 +109,8 @@ memory_initialize_pre_ctors(args::header *kargs)
// Create the page manager
new (&g_page_manager) page_manager {g_frame_allocator, kpml4};
vm_space &vm = *new (&g_kernel_space) vm_space {kpml4};
process *kp = process::create_kernel_process(kpml4);
vm_space &vm = kp->space();
vm.allow(memory::heap_start, memory::kernel_max_heap, true);
}