X86: Mark IO space accesses as uncachable.

2010-11-22 05:49:03 -05:00
parent cb3674cd27
commit c8c921b9db
1 changed files with 2 additions and 0 deletions
--- a/src/arch/x86/tlb.cc
+++ b/src/arch/x86/tlb.cc
@@ -511,6 +511,7 @@ TLB::translateInt(RequestPtr req, ThreadContext *tc)
            req->setFlags(Request::MMAPED_IPR);
            req->setPaddr(MISCREG_PCI_CONFIG_ADDRESS * sizeof(MiscReg));
        } else if ((IOPort & ~mask(2)) == 0xCFC) {
+            req->setFlags(Request::UNCACHEABLE);
            Addr configAddress =
                tc->readMiscRegNoEffect(MISCREG_PCI_CONFIG_ADDRESS);
            if (bits(configAddress, 31, 31)) {
@@ -519,6 +520,7 @@ TLB::translateInt(RequestPtr req, ThreadContext *tc)
                        (IOPort & mask(2)));
            }
        } else {
+            req->setFlags(Request::UNCACHEABLE);
            req->setPaddr(PhysAddrPrefixIO | IOPort);
        }
        return NoFault;