1 files changed, 77 insertions, 0 deletions
diff --git a/xen/arch/x86/cpu/mcheck/mce_amd.c b/xen/arch/x86/cpu/mcheck/mce_amd.c
new file mode 100644
index 0000000000..3c64d24f08
--- /dev/null
+++ b/xen/arch/x86/cpu/mcheck/mce_amd.c
@@ -0,0 +1,77 @@
+/*
+ * common MCA implementation for AMD CPUs.
+ * Copyright (c) 2012 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <xen/init.h>
+#include <xen/types.h>
+
+#include <asm/msr.h>
+
+#include "mce.h"
+#include "x86_mca.h"
+#include "mce_amd.h"
+
+/* Error Code Types */
+enum mc_ec_type {
+    MC_EC_TLB_TYPE = 0x0010,
+    MC_EC_MEM_TYPE = 0x0100,
+    MC_EC_BUS_TYPE = 0x0800,
+};
+
+enum mc_ec_type
+mc_ec2type(uint16_t errorcode)
+{
+    if ( errorcode & MC_EC_BUS_TYPE )
+        return MC_EC_BUS_TYPE;
+    if ( errorcode & MC_EC_MEM_TYPE )
+        return MC_EC_MEM_TYPE;
+    if ( errorcode & MC_EC_TLB_TYPE )
+        return MC_EC_TLB_TYPE;
+    /* Unreached */
+    BUG();
+    return 0;
+}
+
+int
+mc_amd_recoverable_scan(uint64_t status)
+{
+    int ret = 0;
+    enum mc_ec_type ectype;
+    uint16_t errorcode;
+
+    if ( !(status & MCi_STATUS_UC) )
+        return 1;
+
+    errorcode = status & (MCi_STATUS_MCA | MCi_STATUS_MSEC);
+    ectype = mc_ec2type(errorcode);
+
+    switch ( ectype )
+    {
+    case MC_EC_BUS_TYPE: /* value in addr MSR is physical */
+        /* should run cpu offline action */
+        break;
+    case MC_EC_MEM_TYPE: /* value in addr MSR is physical */
+        ret = 1; /* run memory page offline action */
+        break;
+    case MC_EC_TLB_TYPE: /* value in addr MSR is virtual */
+        /* should run tlb flush action and retry */
+        break;
+    }
+
+    return ret;
+}