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authorDavid S. Miller <davem@sunset.davemloft.net>2005-09-20 12:18:38 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-09-20 12:18:38 -0700
commit729b4f7de68191478b20fab19a6d0c6b8c4380c9 (patch)
treec3515037d7797643a6f83e2331ab9d2cd1dd1f64 /include/asm-sparc64
parent6a9b490d5fd7f23c5bcd75f970e01633ad3136e3 (diff)
downloadop-kernel-dev-729b4f7de68191478b20fab19a6d0c6b8c4380c9.zip
op-kernel-dev-729b4f7de68191478b20fab19a6d0c6b8c4380c9.tar.gz
[SPARC64]: Verify vmalloc TLB misses more strictly.
Arrange the modules, OBP, and vmalloc areas such that a range verification can be done quite minimally. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64')
-rw-r--r--include/asm-sparc64/pgtable.h20
1 files changed, 11 insertions, 9 deletions
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index a2b4f5e..a297f61 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -24,21 +24,23 @@
#include <asm/processor.h>
#include <asm/const.h>
-/* The kernel image occupies 0x4000000 to 0x1000000 (4MB --> 16MB).
- * The page copy blockops use 0x1000000 to 0x18000000 (16MB --> 24MB).
+/* The kernel image occupies 0x4000000 to 0x1000000 (4MB --> 32MB).
+ * The page copy blockops can use 0x2000000 to 0x10000000.
* The PROM resides in an area spanning 0xf0000000 to 0x100000000.
- * The vmalloc area spans 0x140000000 to 0x200000000.
+ * The vmalloc area spans 0x100000000 to 0x200000000.
+ * Since modules need to be in the lowest 32-bits of the address space,
+ * we place them right before the OBP area from 0x10000000 to 0xf0000000.
* There is a single static kernel PMD which maps from 0x0 to address
* 0x400000000.
*/
-#define TLBTEMP_BASE _AC(0x0000000001000000,UL)
-#define MODULES_VADDR _AC(0x0000000002000000,UL)
-#define MODULES_LEN _AC(0x000000007e000000,UL)
-#define MODULES_END _AC(0x0000000080000000,UL)
-#define VMALLOC_START _AC(0x0000000140000000,UL)
-#define VMALLOC_END _AC(0x0000000200000000,UL)
+#define TLBTEMP_BASE _AC(0x0000000002000000,UL)
+#define MODULES_VADDR _AC(0x0000000010000000,UL)
+#define MODULES_LEN _AC(0x00000000e0000000,UL)
+#define MODULES_END _AC(0x00000000f0000000,UL)
#define LOW_OBP_ADDRESS _AC(0x00000000f0000000,UL)
#define HI_OBP_ADDRESS _AC(0x0000000100000000,UL)
+#define VMALLOC_START _AC(0x0000000100000000,UL)
+#define VMALLOC_END _AC(0x0000000200000000,UL)
/* XXX All of this needs to be rethought so we can take advantage
* XXX cheetah's full 64-bit virtual address space, ie. no more hole
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