Author: jhibbits
Date: Wed Nov 29 01:26:07 2017
New Revision: 326354
URL: https://svnweb.freebsd.org/changeset/base/326354
Log:
Only check the page tables if within the KVA.
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
Modified:
head/sys/powerpc/booke/pmap.c
Modified: head/sys/powerpc/booke/pmap.c
==============================================================================
--- head/sys/powerpc/booke/pmap.c Wed Nov 29 00:46:36 2017
(r326353)
+++ head/sys/powerpc/booke/pmap.c Wed Nov 29 01:26:07 2017
(r326354)
@@ -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 */
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