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setup kernelspace VMA list

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This commit is contained in:
Steffen Vogel 2013-11-20 11:27:49 +01:00
parent 3cd5a5853b
commit 79c4f2703e
1 changed files with 26 additions and 0 deletions
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26
mm/memory.c
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@ -273,18 +273,44 @@ int mmu_init(void)
return ret;
}
// add kernel to VMA list
vma_add((size_t) &kernel_start & PAGE_MASK,
PAGE_ALIGN((size_t) &kernel_end),
VMA_READ|VMA_WRITE|VMA_EXECUTE|VMA_CACHEABLE);
// add LAPIC tp VMA list
vma_add((size_t) &kernel_start - PAGE_SIZE,
(size_t) &kernel_start,
VMA_READ|VMA_WRITE);
#if MAX_CORES > 1
// reserve page for SMP boot code
vma_add(SMP_SETUP_ADDR & PAGE_MASK,
PAGE_ALIGN(SMP_SETUP_ADDR + PAGE_SIZE),
VMA_READ|VMA_WRITE|VMA_EXECUTE|VMA_CACHEABLE);
#endif
#ifdef CONFIG_MULTIBOOT
/*
* Modules like the init ram disk are already loaded.
* Therefore, we set these pages as used.
*/
if (mb_info) {
vma_add((size_t) mb_info & PAGE_MASK,
PAGE_ALIGN((size_t) mb_info + sizeof(multiboot_info_t)),
VMA_READ|VMA_CACHEABLE);
if (mb_info->flags & MULTIBOOT_INFO_MODS) {
multiboot_module_t* mmodule = (multiboot_module_t*) ((size_t) mb_info->mods_addr);
vma_add((size_t) mb_info->mods_addr & PAGE_MASK,
PAGE_ALIGN((size_t) mb_info->mods_addr + mb_info->mods_count*sizeof(multiboot_module_t)),
VMA_READ|VMA_CACHEABLE);
for(i=0; i<mb_info->mods_count; i++) {
vma_add(PAGE_ALIGN(mmodule[i].mod_start),
PAGE_ALIGN(mmodule[i].mod_end),
VMA_READ|VMA_WRITE|VMA_CACHEABLE);
for(addr=mmodule[i].mod_start; addr<mmodule[i].mod_end; addr+=PAGE_SIZE) {
page_set_mark(addr >> PAGE_SHIFT);