gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ihk_mc_pt_set_pte(): double check phys address alignment

Browse Source
This commit is contained in:
Balazs Gerofi
2016-12-07 11:23:45 +09:00
parent 7070094a31
commit b0f4ae4890
1 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/x86/kernel/memory.c
View File

@@ -1779,9 +1779,19 @@ int ihk_mc_pt_set_pte(page_table_t pt, pte_t *ptep, size_t pgsize,
*ptep = phys | attr_to_l1attr(attr); *ptep = phys | attr_to_l1attr(attr);
} }
else if (pgsize == PTL2_SIZE) { else if (pgsize == PTL2_SIZE) {
if (phys & (PTL2_SIZE - 1)) {
kprintf("%s: error: phys needs to be PTL2_SIZE aligned\n", __FUNCTION__);
error = -1;
goto out;
}
*ptep = phys | attr_to_l2attr(attr | PTATTR_LARGEPAGE); *ptep = phys | attr_to_l2attr(attr | PTATTR_LARGEPAGE);
} }
else if ((pgsize == PTL3_SIZE) && (use_1gb_page)) { else if ((pgsize == PTL3_SIZE) && (use_1gb_page)) {
if (phys & (PTL3_SIZE - 1)) {
kprintf("%s: error: phys needs to be PTL3_SIZE aligned\n", __FUNCTION__);
error = -1;
goto out;
}
*ptep = phys | attr_to_l3attr(attr | PTATTR_LARGEPAGE); *ptep = phys | attr_to_l3attr(attr | PTATTR_LARGEPAGE);
} }
else { else {