[Qemu-devel] [PATCH v3] memory-region: Report if region is read-only or write-only on info mtree

[Jan Kiszka <jan.kiszka@web.de>]

From: Jan Kiszka <jan.kiszka@siemens.com>

Helpful to understand guest configurations of things like the i440FX's
PAM or the state of ROM devices.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---

Changes in v3:
 - refactored writable condition (which DO makes sense as a ROM device
   is either in ROM or in write mode. It's readable and writable in
   both modes, but only in special ways. So let's tag it abstractly.)

 memory.c |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/memory.c b/memory.c
index 5e77d8a..22816e2 100644
--- a/memory.c
+++ b/memory.c
@@ -1609,23 +1609,31 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
             ml->printed = false;
             QTAILQ_INSERT_TAIL(alias_print_queue, ml, queue);
         }
-        mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d): alias %s @%s "
-                   TARGET_FMT_plx "-" TARGET_FMT_plx "\n",
+        mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
+                   " (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
+                   "-" TARGET_FMT_plx "\n",
                    base + mr->addr,
                    base + mr->addr
                    + (target_phys_addr_t)int128_get64(mr->size) - 1,
                    mr->priority,
+                   mr->readable ? 'R' : '-',
+                   !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
+                                                                      : '-',
                    mr->name,
                    mr->alias->name,
                    mr->alias_offset,
                    mr->alias_offset
                    + (target_phys_addr_t)int128_get64(mr->size) - 1);
     } else {
-        mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d): %s\n",
+        mon_printf(f,
+                   TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
                    base + mr->addr,
                    base + mr->addr
                    + (target_phys_addr_t)int128_get64(mr->size) - 1,
                    mr->priority,
+                   mr->readable ? 'R' : '-',
+                   !mr->readonly && !(mr->rom_device && mr->readable) ? 'W'
+                                                                      : '-',
                    mr->name);
     }
 
-- 
1.7.3.4