d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Only check the page tables if within the KVA.

Browse Source 
Devices aren't mapped within the KVA, and with the way 64-bit hashes the
addresses pte_vatopa() may not return a 0 physical address for a device.

MFC after:	1 week
This commit is contained in:
Justin Hibbits 2017-11-29 01:26:07 +00:00
parent 8e3e3a7ae8
commit 3de971a61a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=326354
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/powerpc/booke/pmap.c
View File

@ -2091,10 +2091,11 @@ static vm_paddr_t
mmu_booke_kextract(mmu_t mmu, vm_offset_t va)
{
tlb_entry_t e;
vm_paddr_t p;
vm_paddr_t p = 0;
int i;
p = pte_vatopa(mmu, kernel_pmap, va);
if (va >= VM_MIN_KERNEL_ADDRESS && va <= VM_MAX_KERNEL_ADDRESS)
p = pte_vatopa(mmu, kernel_pmap, va);
if (p == 0) {
/* Check TLB1 mappings */