[SPARC64]: TSB refinements.
Move {init_new,destroy}_context() out of line.
Do not put huge pages into the TSB, only base page size translations.
There are some clever things we could do here, but for now let's be
correct instead of fancy.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index 15e8af5..2f84cef 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -8,6 +8,7 @@
#include <asm/page.h>
#include <asm/tlbflush.h>
#include <asm/tlb.h>
+#include <asm/mmu_context.h>
#define TSB_ENTRY_ALIGNMENT 16
@@ -82,3 +83,30 @@
}
}
}
+
+int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+ unsigned long page = get_zeroed_page(GFP_KERNEL);
+
+ mm->context.sparc64_ctx_val = 0UL;
+ if (unlikely(!page))
+ return -ENOMEM;
+
+ mm->context.sparc64_tsb = (unsigned long *) page;
+
+ return 0;
+}
+
+void destroy_context(struct mm_struct *mm)
+{
+ free_page((unsigned long) mm->context.sparc64_tsb);
+
+ spin_lock(&ctx_alloc_lock);
+
+ if (CTX_VALID(mm->context)) {
+ unsigned long nr = CTX_NRBITS(mm->context);
+ mmu_context_bmap[nr>>6] &= ~(1UL << (nr & 63));
+ }
+
+ spin_unlock(&ctx_alloc_lock);
+}