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Fix setting of protection bits for page table entries in pmap_map(). This

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function is only called from vm_page_startup() and vm_reserv_startup().
I.e. during vm subsystem initialization. As VM_PROT_WRITE is always
used in these calls, the typo did not have any effect. Likely, it's
the reason why it wasn't discovered so long.
This commit is contained in:
Svatopluk Kraus 2016-02-02 10:17:51 +00:00
parent 5df33bf4df
commit 6f95e9062b
1 changed files with 1 additions and 1 deletions
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2
sys/arm/arm/pmap-v6.c
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@ -1325,7 +1325,7 @@ pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
PDEBUG(1, printf("%s: virt = %#x, start = %#x, end = %#x (size = %#x),"
" prot = %d\n", __func__, *virt, start, end, end - start, prot));
l2prot = (prot & VM_PROT_WRITE) ? PTE2_AP_KRW : PTE1_AP_KR;
l2prot = (prot & VM_PROT_WRITE) ? PTE2_AP_KRW : PTE2_AP_KR;
l2prot |= (prot & VM_PROT_EXECUTE) ? PTE2_X : PTE2_NX;
l1prot = ATTR_TO_L1(l2prot);