Author: jhibbits
Date: Thu Jan 14 23:22:43 2016
New Revision: 294055
URL: https://svnweb.freebsd.org/changeset/base/294055
Log:
Adjust VM_MAX_KERNEL_ADDRESS to the max address, not the minimum next.
VM_MAX_KERNEL_ADDERESS is the maximum KVA address. 0xf8000000 is the start of
device mapping space. Since several conditional checks use '<=' against
VM_MAX_KERNEL_ADDRESS, bad things could feasibly happen.
Modified:
head/sys/powerpc/include/vmparam.h
Modified: head/sys/powerpc/include/vmparam.h
==============================================================================
--- head/sys/powerpc/include/vmparam.h Thu Jan 14 22:53:07 2016
(r294054)
+++ head/sys/powerpc/include/vmparam.h Thu Jan 14 23:22:43 2016
(r294055)
@@ -111,7 +111,7 @@
#define KERNBASE 0xc0000000 /* start of kernel
virtual */
#define VM_MIN_KERNEL_ADDRESS KERNBASE
-#define VM_MAX_KERNEL_ADDRESS 0xf8000000
+#define VM_MAX_KERNEL_ADDRESS 0xf7ffffff
#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS
#endif /* AIM/E500 */
@@ -129,7 +129,7 @@ struct pmap_physseg {
* The physical address space is densely populated on 32-bit systems,
* but may not be on 64-bit ones.
*/
-#ifdef __powerpc64__
+#ifdef __powerpc__
#define VM_PHYSSEG_SPARSE
#else
#define VM_PHYSSEG_DENSE
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