Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Handle new semantics on map_max_pages_need.

Browse Source 
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26753 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
François Revol 2008-08-03 12:09:23 +00:00
parent 1fffad3f43
commit 7b22dac921
1 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/system/kernel/arch/m68k/arch_vm_translation_map_impl.cpp
View File

@ -227,7 +227,7 @@ early_query(addr_t va, addr_t *_physicalAddress)
addr_t pa;
int32 index;
status_t err = B_ERROR; // no pagetable here
TRACE(("%s(%p,)", __FUNCTION__, va));
TRACE(("%s(%p,)\n", __FUNCTION__, va));
index = VADDR_TO_PRENT(va);
TRACE(("%s: pr[%d].type %d\n", __FUNCTION__, index, pr[index].type));
@ -485,7 +485,15 @@ static size_t
map_max_pages_need(vm_translation_map */*map*/, addr_t start, addr_t end)
{
size_t need;
size_t pgdirs = VADDR_TO_PRENT(end) + 1 - VADDR_TO_PRENT(start);
size_t pgdirs;
// If start == 0, the actual base address is not yet known to the caller
// and we shall assume the worst case.
if (start == 0) {
#warning M68K: FIXME?
start = (1023) * B_PAGE_SIZE;
end += start;
}
pgdirs = VADDR_TO_PRENT(end) + 1 - VADDR_TO_PRENT(start);
// how much for page directories
need = (pgdirs + NUM_DIRTBL_PER_PAGE - 1) / NUM_DIRTBL_PER_PAGE;
// and page tables themselves
@ -1236,7 +1244,7 @@ m68k_vm_translation_map_init(kernel_args *args)
&sIOSpaceBase, IOSPACE_SIZE, IOSPACE_CHUNK_SIZE);
if (error != B_OK)
return error;
TRACE(("iospace at %p\n", sIOSpaceBase));
// initialize our data structures
memset(iospace_pgtables, 0, B_PAGE_SIZE * (IOSPACE_SIZE / (B_PAGE_SIZE * NUM_PAGEENT_PER_TBL * NUM_PAGETBL_PER_PAGE)));