From patchwork Fri Oct  1 01:52:25 2010
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Subject: [PATCH] Monitor command to translate guest physical address to
	host virtual address
From: Huang Ying <ying.huang@intel.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	Andi Kleen <andi@firstfloor.org>, Dean Nelson <dnelson@redhat.com>
Date: Fri, 01 Oct 2010 09:52:25 +0800
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	Fri, 01 Oct 2010 01:52:33 +0000 (UTC)


--- a/monitor.c
+++ b/monitor.c
@@ -2301,6 +2301,17 @@ static void do_inject_mce(Monitor *mon,
 }
 #endif
 
+static void do_p2v(Monitor *mon, const QDict *qdict)
+{
+    target_phys_addr_t size = TARGET_PAGE_SIZE;
+    target_phys_addr_t addr = qdict_get_int(qdict, "addr");
+    void *vaddr;
+
+    vaddr = cpu_physical_memory_map(addr, &size, 0);
+    monitor_printf(mon, "Guest physical address %p is mapped at "
+                   "host virtual address %p\n", (void *)addr, vaddr);
+}
+
 static int do_getfd(Monitor *mon, const QDict *qdict, QObject **ret_data)
 {
     const char *fdname = qdict_get_str(qdict, "fdname");
--- a/qemu-monitor.hx
+++ b/qemu-monitor.hx
@@ -459,6 +459,19 @@ Start gdbserver session (default @var{po
 ETEXI
 
     {
+        .name       = "p2v",
+        .args_type  = "fmt:/,addr:l",
+        .params     = "/fmt addr",
+        .help       = "translate guest physical 'addr' to host virtual address",
+        .mhandler.cmd = do_p2v,
+    },
+STEXI
+@item p2v @var{addr}
+@findex mce
+Translate guest physical @var{addr} to host virtual address.
+ETEXI
+
+    {
         .name       = "x",
         .args_type  = "fmt:/,addr:l",
         .params     = "/fmt addr",