From: Max Asbock <masbock@xxxxxxxxxxxxxxxxxx>
Add command p2v to translate guest physical address to host virtual
address.
The p2v command provides one step in a chain of translations from
guest virtual to guest physical to host virtual to host physical. Host
physical is then used to inject a machine check error. As a
consequence the HWPOISON code on the host and the MCE injection code
in qemu-kvm are exercised.
Signed-off-by: Max Asbock <masbock@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Jiajia Zheng <jiajia.zheng@xxxxxxxxx>
Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx>
---
monitor.c | 11 +++++++++++
qemu-monitor.hx | 13 +++++++++++++
2 files changed, 24 insertions(+)
--- 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",
--
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