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HFI1: hfi1_unmap_device_addresses() at process terminate time

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This commit is contained in:
Balazs Gerofi
2017-10-16 18:15:55 +09:00
parent 002b78372d
commit 2900ce20f7
6 changed files with 158 additions and 22 deletions
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20
arch/x86_64/kernel/memory.c
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@@ -731,6 +731,26 @@ static void destroy_page_table(int level, struct page_table *pt)
return;
}
void ihk_mc_pt_destroy_pgd_subtree(struct page_table *pt, void *virt)
{
int l4idx, l3idx, l2idx, l1idx;
unsigned long v = (unsigned long)virt;
struct page_table *lower;
GET_VIRT_INDICES(v, l4idx, l3idx, l2idx, l1idx);
if (!(pt->entry[l4idx] & PF_PRESENT))
return;
lower = (struct page_table *)
phys_to_virt(pt->entry[l4idx] & PT_PHYSMASK);
destroy_page_table(3, lower);
pt->entry[l4idx] = 0;
dkprintf("%s: virt: 0x%lx, l4idx: %d subtree destroyed\n",
__FUNCTION__, virt, l4idx);
}
void ihk_mc_pt_destroy(struct page_table *pt)
{
const int level = 4; /* PML4 */