arm, mem: Remove unused CLEAR_LL request flag

Cleaning up dead code. The CLREX stores zero directly to
MISCREG_LOCKFLAG and so the request flag is no longer needed. The
corresponding functionality in the cache tags is also removed.

1 files changed, 0 insertions, 10 deletions

diff --git a/src/arch/arm/tlb.cc b/src/arch/arm/tlb.cc
index 11075f02c..aee6a251a 100644
--- a/src/arch/arm/tlb.cc
+++ b/src/arch/arm/tlb.cc
@@ -977,16 +977,6 @@ TLB::translateFs(RequestPtr req, ThreadContext *tc, Mode mode,
                  "flags %#x tranType 0x%x\n", vaddr_tainted, mode, isStage2,
                  scr, sctlr, flags, tranType);
 
-    // If this is a clrex instruction, provide a PA of 0 with no fault
-    // This will force the monitor to set the tracked address to 0
-    // a bit of a hack but this effectively clrears this processors monitor
-    if (flags & Request::CLEAR_LL){
-        // @todo: check implications of security extensions
-       req->setPaddr(0);
-       req->setFlags(Request::UNCACHEABLE | Request::STRICT_ORDER);
-       req->setFlags(Request::CLEAR_LL);
-       return NoFault;
-    }
     if ((req->isInstFetch() && (!sctlr.i)) ||
         ((!req->isInstFetch()) && (!sctlr.c))){
        req->setFlags(Request::UNCACHEABLE | Request::STRICT_ORDER);