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use correct boundaries for the VMA reservation

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- for the kernel we use huge pages
=> use 2MB boundaries for the VMA reservation
This commit is contained in:
Stefan Lankes 2016-01-03 11:15:47 +01:00
parent a4bd6b0d22
commit 488ef16266
1 changed files with 9 additions and 2 deletions
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11
hermit/mm/vma.c
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@ -39,6 +39,9 @@
extern const void kernel_start;
extern const void kernel_end;
#define PAGE_2M_FLOOR(addr) (((addr) + (1L << 21) - 1) & (-1L << 21))
#define PAGE_2M_CEIL(addr) ( (addr) & (-1L << 21))
/*
* Kernel space VMA list and lock
*
@ -55,9 +58,13 @@ int vma_init(void)
{
int ret;
kprintf("vma_init: reserve vma region 0x%llx - 0x%llx\n",
PAGE_2M_CEIL((size_t) &kernel_start),
PAGE_2M_FLOOR((size_t) &kernel_end));
// add Kernel
ret = vma_add(PAGE_CEIL((size_t) &kernel_start),
PAGE_FLOOR((size_t) &kernel_end),
ret = vma_add(PAGE_2M_CEIL((size_t) &kernel_start),
PAGE_2M_FLOOR((size_t) &kernel_end),
VMA_READ|VMA_WRITE|VMA_EXECUTE|VMA_CACHEABLE);
if (BUILTIN_EXPECT(ret, 0))
goto out;