arch: Add support for invalidating TLBs when draining

This patch adds support for the memInvalidate() drain method.  TLB
flushing is requested by calling the virtual flushAll() method on the
TLB.

Note: This patch renames invalidateAll() to flushAll() on x86 and
SPARC to make the interface consistent across all supported
architectures.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/sim/tlb.hh b/src/sim/tlb.hh
index aadf047bf..95a252e16 100644
--- a/src/sim/tlb.hh
+++ b/src/sim/tlb.hh
@@ -65,6 +65,11 @@ class BaseTLB : public SimObject
     virtual void demapPage(Addr vaddr, uint64_t asn) = 0;
 
     /**
+     * Remove all entries from the TLB
+     */
+    virtual void flushAll() = 0;
+
+    /**
      * Get the table walker master port if present. This is used for
      * migrating port connections during a CPU takeOverFrom()
      * call. For architectures that do not have a table walker, NULL
@@ -75,6 +80,8 @@ class BaseTLB : public SimObject
      */
     virtual BaseMasterPort* getMasterPort() { return NULL; }
 
+    void memInvalidate() { flushAll(); }
+
     class Translation
     {
       public: