Author: kib
Date: Thu Jul 11 05:15:30 2013
New Revision: 253186
URL: http://svnweb.freebsd.org/changeset/base/253186
Log:
Explicitely panic instead of possibly doing undefined things when
ptelist KVA is exhausted. Currently this cannot happen, the added
panic serves as assert.
Discussed with: alc
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/i386/i386/pmap.c
Modified: head/sys/i386/i386/pmap.c
==============================================================================
--- head/sys/i386/i386/pmap.c Thu Jul 11 05:10:36 2013 (r253185)
+++ head/sys/i386/i386/pmap.c Thu Jul 11 05:15:30 2013 (r253186)
@@ -680,7 +680,7 @@ pmap_ptelist_alloc(vm_offset_t *head)
va = *head;
if (va == 0)
- return (va); /* Out of memory */
+ panic("pmap_ptelist_alloc: exhausted ptelist KVA");
pte = vtopte(va);
*head = *pte;
if (*head & PG_V)
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