To dump information about ramblocks. It looks like:
(qemu) info ramblock
Block Name PSize Offset Used
Total
/objects/mem 2 MiB 0x0000000000000000 0x0000000080000000
0x0000000080000000
vga.vram 4 KiB 0x0000000080060000 0x0000000001000000
0x0000000001000000
/rom@etc/acpi/tables 4 KiB 0x00000000810b0000 0x0000000000020000
0x0000000000200000
pc.bios 4 KiB 0x0000000080000000 0x0000000000040000
0x0000000000040000
0000:00:03.0/e1000.rom 4 KiB 0x0000000081070000 0x0000000000040000
0x0000000000040000
pc.rom 4 KiB 0x0000000080040000 0x0000000000020000
0x0000000000020000
0000:00:02.0/vga.rom 4 KiB 0x0000000081060000 0x0000000000010000
0x0000000000010000
/rom@etc/table-loader 4 KiB 0x00000000812b0000 0x0000000000001000
0x0000000000001000
/rom@etc/acpi/rsdp 4 KiB 0x00000000812b1000 0x0000000000001000
0x0000000000001000
Ramblock is something hidden internally in QEMU implementation, and this
command should only be used by mostly QEMU developers on RAM stuff. It
is not a command suitable for QMP interface. So only HMP interface is
provided for it.
Signed-off-by: Peter Xu <pet...@redhat.com>
---
exec.c | 22 ++++++++++++++++++++++
hmp-commands-info.hx | 14 ++++++++++++++
hmp.c | 6 ++++++
hmp.h | 1 +
include/exec/ramlist.h | 1 +
5 files changed, 44 insertions(+)
diff --git a/exec.c b/exec.c
index 50519ae..821bef3 100644
--- a/exec.c
+++ b/exec.c
@@ -71,6 +71,8 @@
#include "qemu/mmap-alloc.h"
#endif
+#include "monitor/monitor.h"
+
//#define DEBUG_SUBPAGE
#if !defined(CONFIG_USER_ONLY)
@@ -1333,6 +1335,26 @@ void qemu_mutex_unlock_ramlist(void)
qemu_mutex_unlock(&ram_list.mutex);
}
+void ram_block_dump(Monitor *mon)
+{
+ RAMBlock *block;
+ char *psize;
+
+ rcu_read_lock();
+ monitor_printf(mon, "%24s %8s %18s %18s %18s\n",
+ "Block Name", "PSize", "Offset", "Used", "Total");
+ RAMBLOCK_FOREACH(block) {
+ psize = size_to_str(block->page_size);
+ monitor_printf(mon, "%24s %8s 0x%016" PRIx64 " 0x%016" PRIx64
+ " 0x%016" PRIx64 "\n", block->idstr, psize,
+ (uint64_t)block->offset,
+ (uint64_t)block->used_length,
+ (uint64_t)block->max_length);
+ g_free(psize);
+ }
+ rcu_read_unlock();
+}
+
#ifdef __linux__
/*
* FIXME TOCTTOU: this iterates over memory backends' mem-path, which
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index a53f105..ae16901 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -788,6 +788,20 @@ Display the latest dump status.
ETEXI
{
+ .name = "ramblock",
+ .args_type = "",
+ .params = "",
+ .help = "Display system ramblock information",
+ .cmd = hmp_info_ramblock,
+ },
+
+STEXI
+@item info ramblock
+@findex ramblock
+Dump all the ramblocks of the system.
+ETEXI
+
+ {
.name = "hotpluggable-cpus",
.args_type = "",
.params = "",
diff --git a/hmp.c b/hmp.c
index ab407d6..8369388 100644
--- a/hmp.c
+++ b/hmp.c
@@ -37,6 +37,7 @@
#include "qemu-io.h"
#include "qemu/cutils.h"
#include "qemu/error-report.h"
+#include "exec/ramlist.h"
#include "hw/intc/intc.h"
#ifdef CONFIG_SPICE
@@ -2563,6 +2564,11 @@ void hmp_info_dump(Monitor *mon, const QDict *qdict)
qapi_free_DumpQueryResult(result);
}
+void hmp_info_ramblock(Monitor *mon, const QDict *qdict)
+{
+ ram_block_dump(mon);
+}
+
void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict)
{
Error *err = NULL;
diff --git a/hmp.h b/hmp.h
index 799fd37..7353b67 100644
--- a/hmp.h
+++ b/hmp.h
@@ -136,6 +136,7 @@ void hmp_rocker_ports(Monitor *mon, const QDict *qdict);
void hmp_rocker_of_dpa_flows(Monitor *mon, const QDict *qdict);
void hmp_rocker_of_dpa_groups(Monitor *mon, const QDict *qdict);
void hmp_info_dump(Monitor *mon, const QDict *qdict);
+void hmp_info_ramblock(Monitor *mon, const QDict *qdict);
void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict);
void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict);
diff --git a/include/exec/ramlist.h b/include/exec/ramlist.h
index f1c6b45..2e2ac6c 100644
--- a/include/exec/ramlist.h
+++ b/include/exec/ramlist.h
@@ -73,5 +73,6 @@ void ram_block_notifier_remove(RAMBlockNotifier *n);
void ram_block_notify_add(void *host, size_t size);
void ram_block_notify_remove(void *host, size_t size);
+void ram_block_dump(Monitor *mon);
#endif /* RAMLIST_H */
--
2.7.4
