svn commit: r253558 - head/sys/ia64/ia64
Marcel Moolenaar
marcel at FreeBSD.org
Tue Jul 23 02:11:22 UTC 2013
Author: marcel
Date: Tue Jul 23 02:11:22 2013
New Revision: 253558
URL: http://svnweb.freebsd.org/changeset/base/253558
Log:
In pmap_mapdev(), if the physical memory range is not covered by an EFI
memory descriptor, don't return NULL as the virtual address, return the
direct-mapped uncacheable virtual address for it. At first, this was
needed only for the Altix 350, but now even some high-end HP machines
have devices mapped to physical addresses that aren't covered by the
EFI memory map.
Modified:
head/sys/ia64/ia64/pmap.c
Modified: head/sys/ia64/ia64/pmap.c
==============================================================================
--- head/sys/ia64/ia64/pmap.c Mon Jul 22 23:08:36 2013 (r253557)
+++ head/sys/ia64/ia64/pmap.c Tue Jul 23 02:11:22 2013 (r253558)
@@ -2451,7 +2451,7 @@ pmap_mapdev(vm_paddr_t pa, vm_size_t sz)
if (md == NULL) {
printf("%s: [%#lx..%#lx] not covered by memory descriptor\n",
__func__, pa, pa + sz - 1);
- return (NULL);
+ return ((void *)IA64_PHYS_TO_RR6(pa));
}
if (md->md_type == EFI_MD_TYPE_FREE) {
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