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VMM -- Touch and set page in one operation

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This commit is contained in:
Thomas Lovén
2018-02-20 21:58:14 +01:00
parent df0df93da7
commit 9bc1abceff
4 changed files with 38 additions and 11 deletions
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16
src/kernel/memory/vmm.c
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@@ -47,7 +47,7 @@ uint64_t vmm_get_page(uint64_t P4, uint64_t addr)
return -1;
}
int vmm_set_page(uint64_t P4, uint64_t addr, uint64_t page, uint16_t flags)
int vmm_set_page(uint64_t P4, uint64_t addr, uint64_t page, uint16_t flags, int touch)
{
if(flags & PAGE_HUGE)
{
@@ -55,7 +55,12 @@ int vmm_set_page(uint64_t P4, uint64_t addr, uint64_t page, uint16_t flags)
&& P4e(P4, addr).present
&& P3e(P4, addr).present
))
return -1;
{
if(touch)
touch_page(P4, addr, flags);
else
return -1;
}
if(P2e(P4, addr).present && !P2e(P4,addr).huge)
return -1;
P2e(P4, addr).value = page | flags;
@@ -63,7 +68,12 @@ int vmm_set_page(uint64_t P4, uint64_t addr, uint64_t page, uint16_t flags)
}
if(!page_exists(P4, addr))
return -1;
{
if(touch)
touch_page(P4, addr, flags);
else
return -1;
}
P1e(P4, addr).value = page | flags;
return 0;