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VMM - free_page returns P1 to PMM if empty

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This commit is contained in:
Thomas Lovén
2017-12-30 13:16:20 +01:00
parent 46e27fb817
commit d54a206f82
2 changed files with 19 additions and 0 deletions
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3
src/kernel/memory/vmm.c
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@@ -91,17 +91,20 @@ void free_page(void *P4, uintptr_t addr, int free)
for(int i = 0; i < ENTRIES_PER_PT; i++)
if(pt[i].value)
return;
pmm_free(MASK_FLAGS(P2e(P4, addr).value));
P2e(P4, addr).value = 0;
pt = PT(P3e(P4, addr).value);
for(int i = 0; i < ENTRIES_PER_PT; i++)
if(pt[i].value)
return;
pmm_free(MASK_FLAGS(P3e(P4, addr).value));
P3e(P4, addr).value = 0;
pt = PT(P4e(P4, addr).value);
for(int i = 0; i < ENTRIES_PER_PT; i++)
if(pt[i].value)
return;
pmm_free(MASK_FLAGS(P4e(P4, addr).value));
P4e(P4, addr).value = 0;
}