On Tue, Oct 26, 2010 at 10:39:48AM +0800, Huang Ying wrote:
> Author: Max Asbock <masbock@xxxxxxxxxxxxxxxxxx>
>
> Add command pfa2hva to translate guest physical address to host
> virtual address.
>
> The pfa2hva 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.
>
> v2:
>
> - Add QMP support
Looks good to me. Anthony?
>
> Signed-off-by: Max Asbock <masbock@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jiajia Zheng <jiajia.zheng@xxxxxxxxx>
> Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx>
> ---
> hmp-commands.hx | 15 +++++++++++++++
> monitor.c | 22 ++++++++++++++++++++++
> qmp-commands.hx | 27 +++++++++++++++++++++++++++
> 3 files changed, 64 insertions(+)
>
> --- a/monitor.c
> +++ b/monitor.c
> @@ -2272,6 +2272,28 @@ static void do_inject_mce(Monitor *mon,
> }
> #endif
>
> +static void do_pfa2hva_print(Monitor *mon, const QObject *data)
> +{
> + QInt *qint;
> +
> + qint = qobject_to_qint(data);
> + monitor_printf(mon, "0x%lx\n", (unsigned long)qint->value);
> +}
> +
> +static int do_pfa2hva(Monitor *mon, const QDict *qdict, QObject **ret_data)
> +{
> + target_phys_addr_t paddr;
> + target_phys_addr_t size = TARGET_PAGE_SIZE;
> + void *vaddr;
> +
> + paddr = qdict_get_int(qdict, "addr");
> + vaddr = cpu_physical_memory_map(paddr, &size, 0);
> + cpu_physical_memory_unmap(vaddr, size, 0, 0);
> + *ret_data = qobject_from_jsonf("%ld", (unsigned long)vaddr);
> +
> + return 0;
> +}
> +
> static int do_getfd(Monitor *mon, const QDict *qdict, QObject **ret_data)
> {
> const char *fdname = qdict_get_str(qdict, "fdname");
> --- a/hmp-commands.hx
> +++ b/hmp-commands.hx
> @@ -293,6 +293,21 @@ Start gdbserver session (default @var{po
> ETEXI
>
> {
> + .name = "pfa2hva",
> + .args_type = "fmt:/,addr:l",
> + .params = "/fmt addr",
> + .help = "translate guest physical 'addr' to host virtual address",
> + .user_print = do_pfa2hva_print,
> + .mhandler.cmd_new = do_pfa2hva,
> + },
> +
> +STEXI
> +@item pfa2hva @var{addr}
> +@findex pfa2hva
> +Translate guest physical @var{addr} to host virtual address.
> +ETEXI
> +
> + {
> .name = "x",
> .args_type = "fmt:/,addr:l",
> .params = "/fmt addr",
> --- a/qmp-commands.hx
> +++ b/qmp-commands.hx
> @@ -738,6 +738,33 @@ Example:
> EQMP
>
> {
> + .name = "pfa2hva",
> + .args_type = "addr:l",
> + .params = "addr",
> + .help = "translate guest physical 'addr' to host virtual address",
> + .user_print = do_pfa2hva_print,
> + .mhandler.cmd_new = do_pfa2hva,
> + },
> +
> +SQMP
> +pfa2hva
> +---
> +
> +Translate guest physical 'addr' to host virtual address.
> +
> +Arguments:
> +
> +- "addr": the guest physical address
> +
> +Example:
> +
> +-> { "execute": "pfa2hva",
> + "arguments": { "addr": 196608 } }
> +<- { "return": 139888084717568 }
> +
> +EQMP
> +
> + {
> .name = "qmp_capabilities",
> .args_type = "",
> .params = "",
>
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