Author: alc
Date: Tue Jan 20 08:13:45 2009
New Revision: 187466
URL: http://svn.freebsd.org/changeset/base/187466
Log:
MFC
Increase the size of the kernel virtual address space to 6GB.
Increase the ceiling on the kmem map's size to 3.6GB. Also, define the
ceiling as a fraction of the kernel map's size rather than an absolute
quantity. Thus, scaling of the kmem map's size will be automatic with
changes to the kernel map's size.
Modified:
stable/7/sys/ (props changed)
stable/7/sys/amd64/include/vmparam.h
stable/7/sys/contrib/pf/ (props changed)
stable/7/sys/dev/ath/ath_hal/ (props changed)
stable/7/sys/dev/cxgb/ (props changed)
Modified: stable/7/sys/amd64/include/vmparam.h
==============================================================================
--- stable/7/sys/amd64/include/vmparam.h Tue Jan 20 07:24:28 2009
(r187465)
+++ stable/7/sys/amd64/include/vmparam.h Tue Jan 20 08:13:45 2009
(r187466)
@@ -140,15 +140,16 @@
* 0xffff800000000000 - 0xffff804020100fff recursive page table (512GB slot)
* 0xffff804020101000 - 0xfffffeffffffffff unused
* 0xffffff0000000000 - 0xffffff7fffffffff 512GB direct map mappings
- * 0xffffff8000000000 - 0xffffffff7fffffff unused (510GB)
- * 0xffffffff80000000 - 0xffffffffffffffff 2GB kernel map
+ * 0xffffff8000000000 - 0xfffffffe7fffffff unused (506GB)
+ * 0xfffffffe80000000 - 0xffffffffffffffff 6GB kernel map
*
* Within the kernel map:
+ *
* 0xffffffff80000000 KERNBASE
*/
#define VM_MAX_KERNEL_ADDRESS KVADDR(KPML4I, NPDPEPG-1, NPDEPG-1,
NPTEPG-1)
-#define VM_MIN_KERNEL_ADDRESS KVADDR(KPML4I, KPDPI, 0, 0)
+#define VM_MIN_KERNEL_ADDRESS KVADDR(KPML4I, NPDPEPG-6, 0, 0)
#define DMAP_MIN_ADDRESS KVADDR(DMPML4I, 0, 0, 0)
#define DMAP_MAX_ADDRESS KVADDR(DMPML4I+1, 0, 0, 0)
@@ -187,7 +188,8 @@
* Ceiling on amount of kmem_map kva space.
*/
#ifndef VM_KMEM_SIZE_MAX
-#define VM_KMEM_SIZE_MAX (400 * 1024 * 1024)
+#define VM_KMEM_SIZE_MAX ((VM_MAX_KERNEL_ADDRESS - \
+ VM_MIN_KERNEL_ADDRESS + 1) * 3 / 5)
#endif
/* initial pagein size of beginning of executable file */
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