ref: 61b1134df944eee5188214a9e249101f1ec095e7
parent: 03499e53ccf8391c5b5d4b9eca096abe5e9312c3
parent: e7e6f4fc9061190720b7a67adfff49f2546843aa
author: cinap_lenrek <[email protected]>
date: Wed Jul 15 23:12:31 EDT 2020
merge
--- a/sys/src/9/pc64/mmu.c
+++ b/sys/src/9/pc64/mmu.c
@@ -517,12 +517,17 @@
void
checkmmu(uintptr va, uintptr pa)
{
- uintptr *pte;
+ uintptr *pte, old;
+ int x;
+ x = splhi();
pte = mmuwalk(m->pml4, va, 0, 0);
- if(pte != 0 && (*pte & PTEVALID) != 0 && PPN(*pte) != pa)
- print("%ld %s: va=%#p pa=%#p pte=%#p\n",
- up->pid, up->text, va, pa, *pte);
+ if(pte == 0 || ((old = *pte) & PTEVALID) == 0 || PPN(old) == pa){
+ splx(x);
+ return;
+ }
+ splx(x);
+ print("%ld %s: va=%#p pa=%#p pte=%#p\n", up->pid, up->text, va, pa, old);
}
uintptr