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move McKernel out of Linux kernel virtual

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This commit is contained in:
Balazs Gerofi
2018-02-19 10:41:12 +09:00
committed by Masamichi Takagi
parent 5fcbfa2eb5
commit cae6b9f154
4 changed files with 44 additions and 5 deletions
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25
arch/x86_64/kernel/memory.c
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@@ -2539,6 +2539,30 @@ static void init_normal_area(struct page_table *pt)
virt += LARGE_PAGE_SIZE;
}
}
static void init_linux_kernel_mapping(struct page_table *pt)
{
unsigned long map_start, map_end, phys;
void *virt;
/* Map 2 TB for now */
map_start = 0;
map_end = 0x20000000000;
virt = (void *)LINUX_PAGE_OFFSET;
kprintf("Linux kernel virtual: 0x%lx - 0x%lx -> 0x%lx - 0x%lx\n",
LINUX_PAGE_OFFSET, LINUX_PAGE_OFFSET + map_end, 0, map_end);
for (phys = map_start; phys < map_end; phs += LARGE_PAGE_SIZE) {
if (set_pt_large_page(pt, virt, phys, PTATTR_WRITABLE) != 0) {
kprintf("%s: error setting mapping for 0x%lx\n",
__func__, virt);
}
virt += LARGE_PAGE_SIZE;
}
}
void init_text_area(struct page_table *pt)
{
unsigned long __end, phys, virt;
@@ -2627,6 +2651,7 @@ void init_page_table(void)
/* Normal memory area */
init_normal_area(init_pt);
init_linux_kernel_mapping(init_pt);
init_fixed_area(init_pt);
init_low_area(init_pt);
init_text_area(init_pt);