arch, cpu: Do not forward snoops to table walker

This patch simplifies the overall CPU by changing the TLB caches such
that they do not forward snoops to the table walker port(s). Note that
only ARM and X86 are affected.

There is no reason for the ports to snoop as they do not actually take
any action, and from a performance point of view we are better of not
snooping more than we have to.

Should it at a later point be required to snoop for a particular TLB
design it is easy enough to add it back.

1 files changed, 0 insertions, 8 deletions

diff --git a/src/arch/x86/pagetable_walker.hh b/src/arch/x86/pagetable_walker.hh
index 181d6fb6c..9be35e6cc 100644
--- a/src/arch/x86/pagetable_walker.hh
+++ b/src/arch/x86/pagetable_walker.hh
@@ -70,15 +70,7 @@ namespace X86ISA
             Walker *walker;
 
             bool recvTimingResp(PacketPtr pkt);
-
-            /**
-             * Snooping a coherence request, do nothing.
-             */
-            void recvTimingSnoopReq(PacketPtr pkt) { }
-            Tick recvAtomicSnoop(PacketPtr pkt) { return 0; }
-            void recvFunctionalSnoop(PacketPtr pkt) { }
             void recvReqRetry();
-            bool isSnooping() const { return true; }
         };
 
         friend class WalkerPort;