diff options
| author | Jason J. Herne <jjherne@linux.vnet.ibm.com> | 2015-06-26 14:10:16 -0400 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2015-09-03 12:17:54 +0200 |
| commit | a08f0081c9886c1914d7bc2e6a29636a769fec84 (patch) | |
| tree | 8cb75219e2c88d30fd00520825ed82245abc8091 | |
| parent | a4538a5cc57dd493ed1545be98fa0ead0d391b8a (diff) | |
| download | qemu-a08f0081c9886c1914d7bc2e6a29636a769fec84.zip qemu-a08f0081c9886c1914d7bc2e6a29636a769fec84.tar.gz qemu-a08f0081c9886c1914d7bc2e6a29636a769fec84.tar.bz2 | |
s390x: Info skeys sub-command
Provide an info skeys hmp sub-command to allow the end user to dump a storage
key for a given address. This is useful for guest operating system developers.
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| -rw-r--r-- | hmp-commands.hx | 2 | ||||
| -rw-r--r-- | hw/s390x/s390-skeys.c | 23 | ||||
| -rw-r--r-- | include/hw/s390x/storage-keys.h | 2 | ||||
| -rw-r--r-- | monitor.c | 9 |
4 files changed, 36 insertions, 0 deletions
diff --git a/hmp-commands.hx b/hmp-commands.hx index 803ff91..c61468e 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1806,6 +1806,8 @@ show roms show the TPM device @item info memory-devices show the memory devices +@item info skeys +Display the value of a storage key (s390 only) @end table ETEXI diff --git a/hw/s390x/s390-skeys.c b/hw/s390x/s390-skeys.c index 98a6938..e3860c1 100644 --- a/hw/s390x/s390-skeys.c +++ b/hw/s390x/s390-skeys.c @@ -66,6 +66,29 @@ static void write_keys(QEMUFile *f, uint8_t *keys, uint64_t startgfn, } } +void hmp_info_skeys(Monitor *mon, const QDict *qdict) +{ + S390SKeysState *ss = s390_get_skeys_device(); + S390SKeysClass *skeyclass = S390_SKEYS_GET_CLASS(ss); + uint64_t addr = qdict_get_int(qdict, "addr"); + uint8_t key; + int r; + + /* Quick check to see if guest is using storage keys*/ + if (!skeyclass->skeys_enabled(ss)) { + monitor_printf(mon, "Error: This guest is not using storage keys\n"); + return; + } + + r = skeyclass->get_skeys(ss, addr / TARGET_PAGE_SIZE, 1, &key); + if (r < 0) { + monitor_printf(mon, "Error: %s\n", strerror(-r)); + return; + } + + monitor_printf(mon, " key: 0x%X\n", key); +} + void hmp_dump_skeys(Monitor *mon, const QDict *qdict) { const char *filename = qdict_get_str(qdict, "filename"); diff --git a/include/hw/s390x/storage-keys.h b/include/hw/s390x/storage-keys.h index 0d04f19..18e08d2 100644 --- a/include/hw/s390x/storage-keys.h +++ b/include/hw/s390x/storage-keys.h @@ -54,4 +54,6 @@ void s390_skeys_init(void); S390SKeysState *s390_get_skeys_device(void); void hmp_dump_skeys(Monitor *mon, const QDict *qdict); +void hmp_info_skeys(Monitor *mon, const QDict *qdict); + #endif /* __S390_STORAGE_KEYS_H */ @@ -2881,6 +2881,15 @@ static mon_cmd_t info_cmds[] = { .help = "Show rocker OF-DPA groups", .mhandler.cmd = hmp_rocker_of_dpa_groups, }, +#if defined(TARGET_S390X) + { + .name = "skeys", + .args_type = "addr:l", + .params = "address", + .help = "Display the value of a storage key", + .mhandler.cmd = hmp_info_skeys, + }, +#endif { .name = NULL, }, |