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PMM -- calloc function for getting cleared pages

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This commit is contained in:
Thomas Lovén
2018-01-04 00:36:59 +01:00
parent 5dc4e27392
commit 3a4136c225
4 changed files with 13 additions and 5 deletions
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6
src/kernel/memory/vmm.c
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@@ -77,19 +77,19 @@ int touch_page(void *P4, uintptr_t addr, uint16_t flags)
flags ^= PAGE_HUGE*huge;
if((!P4e(P4, addr).present)
&& (!(P4e(P4, addr).value = pmm_alloc())))
&& (!(P4e(P4, addr).value = pmm_calloc())))
return -1;
P4e(P4, addr).value |= flags | PAGE_PRESENT;
if((!P3e(P4, addr).present)
&& (!(P3e(P4, addr).value = pmm_alloc())))
&& (!(P3e(P4, addr).value = pmm_calloc())))
return -1;
P3e(P4, addr).value |= flags | PAGE_PRESENT;
if(huge) return 0;
if((!P2e(P4, addr).present)
&& (!(P2e(P4, addr).value = pmm_alloc())))
&& (!(P2e(P4, addr).value = pmm_calloc())))
return -1;
P2e(P4, addr).value |= flags | PAGE_PRESENT;