Commit be9b23c4 authored by Peter Xu's avatar Peter Xu Committed by Dr. David Alan Gilbert

ramblock: add new hmp command "info ramblock"

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.
Reviewed-by: 's avatarDr. David Alan Gilbert <>
Signed-off-by: 's avatarPeter Xu <>
Message-Id: <>
Signed-off-by: 's avatarDr. David Alan Gilbert <>
parent 22951aaa
......@@ -71,6 +71,8 @@
#include "qemu/mmap-alloc.h"
#include "monitor/monitor.h"
#if !defined(CONFIG_USER_ONLY)
......@@ -1333,6 +1335,26 @@ void qemu_mutex_unlock_ramlist(void)
void ram_block_dump(Monitor *mon)
RAMBlock *block;
char *psize;
monitor_printf(mon, "%24s %8s %18s %18s %18s\n",
"Block Name", "PSize", "Offset", "Used", "Total");
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,
#ifdef __linux__
* FIXME TOCTTOU: this iterates over memory backends' mem-path, which
......@@ -785,6 +785,20 @@ STEXI
@item info dump
@findex dump
Display the latest dump status.
.name = "ramblock",
.args_type = "",
.params = "",
.help = "Display system ramblock information",
.cmd = hmp_info_ramblock,
@item info ramblock
@findex ramblock
Dump all the ramblocks of the system.
......@@ -39,6 +39,7 @@
#include "qemu-io.h"
#include "qemu/cutils.h"
#include "qemu/error-report.h"
#include "exec/ramlist.h"
#include "hw/intc/intc.h"
......@@ -2738,6 +2739,11 @@ 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)
Error *err = NULL;
......@@ -140,6 +140,7 @@ 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);
......@@ -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 */
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