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ContiguousPTE[10/12] modify split_largepage

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Change-Id: I0a8385af9709b11d7917eb34e8612413fefe6931
This commit is contained in:
TOIDA,Suguru
2018-11-30 09:18:38 +09:00
committed by Masamichi Takagi
parent 50de3820ad
commit 7c231928ab
1 changed files with 11 additions and 15 deletions
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26
arch/arm64/kernel/memory.c
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@ -2599,26 +2599,22 @@ int ihk_mc_pt_split(page_table_t pt, struct process_vm *vm, void *addr)
retry:
ptep = ihk_mc_pt_lookup_pte(pt, addr, 0, &pgaddr, &pgsize, NULL);
switch (pgsize) {
case __PTL4_SIZE:
level = 4;
break;
case __PTL3_SIZE:
level = 3;
break;
case __PTL2_SIZE:
level = 2;
break;
case __PTL1_SIZE:
level = 1;
break;
default:
level = pgsize_to_tbllv(pgsize);
if (level < 0) {
ekprintf("ihk_mc_pt_split:invalid pgsize %#lx\n", pgsize);
return -EINVAL;
return level;
}
if (ptep && !ptl_null(ptep, level) && (pgaddr != addr)) {
page = NULL;
if (ptl_is_contiguous(ptep, level)) {
error = split_contiguous_pages(ptep, pgsize);
if (error) {
goto out;
}
goto retry;
}
if (!ptl_fileoff(ptep, level)) {
phys = ptl_phys(ptep, level);
page = phys_to_page(phys);