Add inlines for demapping a range of pages from the itlb and dtlb. This

will be used to reduce the number of tlb shootdown ipis in an smp system
by sending one ipi for a whole range of pages, instead of one per page.
Munge the context demap operations slightly to support demapping a non-primary
context.

1 files changed, 16 insertions, 5 deletions

diff --git a/sys/sparc64/include/tlb.h b/sys/sparc64/include/tlb.h
index 1db885a..14c6635 100644
--- a/sys/sparc64/include/tlb.h
+++ b/sys/sparc64/include/tlb.h
@@ -187,12 +187,10 @@ tlb_itlb_store(vm_offset_t va, u_long ctx, struct tte tte)
 }
 
 static __inline void
-tlb_context_primary_demap(u_int tlb)
+tlb_context_demap(u_int context)
 {
-	if (tlb & TLB_DTLB)
-		tlb_dtlb_context_primary_demap();
-	if (tlb & TLB_ITLB)
-		tlb_itlb_context_primary_demap();
+	tlb_dtlb_context_primary_demap();
+	tlb_itlb_context_primary_demap();
 }
 
 static __inline void
@@ -217,6 +215,19 @@ tlb_page_demap(u_int tlb, u_int ctx, vm_offset_t va)
 }
 
 static __inline void
+tlb_range_demap(u_int ctx, vm_offset_t start, vm_offset_t end)
+{
+	for (; start < end; start += PAGE_SIZE)
+		tlb_page_demap(TLB_DTLB | TLB_ITLB, ctx, start);
+}
+
+static __inline void
+tlb_tte_demap(struct tte tte, vm_offset_t va)
+{
+	tlb_page_demap(TD_GET_TLB(tte.tte_data), TT_GET_CTX(tte.tte_tag), va);
+}
+
+static __inline void
 tlb_store(u_int tlb, vm_offset_t va, u_long ctx, struct tte tte)
 {
 	if (tlb & TLB_DTLB)