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authorDavid S. Miller <davem@sunset.davemloft.net>2007-05-29 01:58:31 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-05-29 02:51:38 -0700
commit2d9e2763c22a4ce41c3cc5f35366a51f1eba38dc (patch)
tree5a8ee71858b3ec58ff07a2cd9cf875cfb458cf63 /arch/sparc64/mm
parent5f81941c9d47f783e834028dcfb8548809da5a53 (diff)
[SPARC64]: Fix two bugs wrt. kernel 4MB TSB.
1) The TSB lookup was not using the correct hash mask. 2) It was not aligned on a boundary equal to it's size, which is required by the sun4v Hypervisor. wasn't having it's return value checked, and that bug will be fixed up as well in a subsequent changeset. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm')
-rw-r--r--arch/sparc64/mm/init.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 087cbf09d0b7..97af4311f787 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -61,8 +61,11 @@ unsigned long kern_linear_pte_xor[2] __read_mostly;
unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)];
#ifndef CONFIG_DEBUG_PAGEALLOC
-/* A special kernel TSB for 4MB and 256MB linear mappings. */
-struct tsb swapper_4m_tsb[KERNEL_TSB4M_NENTRIES];
+/* A special kernel TSB for 4MB and 256MB linear mappings.
+ * Space is allocated for this right after the trap table
+ * in arch/sparc64/kernel/head.S
+ */
+extern struct tsb swapper_4m_tsb[KERNEL_TSB4M_NENTRIES];
#endif
#define MAX_BANKS 32