qemu-devel
[Top][All Lists]
Advanced
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v2] memory: simple memory tree printer

From: Wayne Xia
Subject: Re: [Qemu-devel] [PATCH v2] memory: simple memory tree printer
Date: Mon, 26 Sep 2011 16:07:08 +0800
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.22) Gecko/20110902 Thunderbird/3.1.14 
Tried it, good tool to inspect guest memory layout.
It would be more nice if some symbol could be used to show
hierarchies.

0000000000000000-7ffffffffffffffe : pci
|__00000000feba0000-00000000febbffff : e1000-mmio
|__00000000febf0000-00000000febf0fff : cirrus-mmio
|__000000fc000000-00000000fdffffff : cirrus-pci-bar0
   |__00000000fc000000-00000000fc7fffff : vga.vram


于 2011-9-26 4:19, Blue Swirl 写道:

Add a monitor command 'info mtree' to show the memory hierarchy
much like /proc/iomem in Linux.

Signed-off-by: Blue Swirl<address@hidden>
---
i386:
memory
0000000000000000-7ffffffffffffffe : system
   00000000000ec000-00000000000effff : alias pam-ram @pc.ram
00000000000ec000-00000000000effff
   00000000000e8000-00000000000ebfff : alias pam-ram @pc.ram
00000000000e8000-00000000000ebfff
   00000000000e4000-00000000000e7fff : alias pam-ram @pc.ram
00000000000e4000-00000000000e7fff
   00000000000e0000-00000000000e3fff : alias pam-ram @pc.ram
00000000000e0000-00000000000e3fff
   00000000000dc000-00000000000dffff : alias pam-ram @pc.ram
00000000000dc000-00000000000dffff
   00000000000d8000-00000000000dbfff : alias pam-ram @pc.ram
00000000000d8000-00000000000dbfff
   00000000000d4000-00000000000d7fff : alias pam-ram @pc.ram
00000000000d4000-00000000000d7fff
   00000000000d0000-00000000000d3fff : alias pam-ram @pc.ram
00000000000d0000-00000000000d3fff
   00000000000cc000-00000000000cffff : alias pam-ram @pc.ram
00000000000cc000-00000000000cffff
   00000000000c8000-00000000000cbfff : alias pam-rom @pc.ram
00000000000c8000-00000000000cbfff
   00000000000c4000-00000000000c7fff : alias pam-rom @pc.ram
00000000000c4000-00000000000c7fff
   00000000000c0000-00000000000c3fff : alias pam-rom @pc.ram
00000000000c0000-00000000000c3fff
   00000000000f0000-00000000000fffff : alias pam-rom @pc.ram
00000000000f0000-00000000000fffff
   00000000000a0000-00000000000bffff : alias smram-region @pci
00000000000a0000-00000000000bffff
   4000000000000000-7fffffffffffffff : alias pci-hole64 @pci
4000000000000000-7fffffffffffffff
   0000000008000000-00000000ffffffff : alias pci-hole @pci
0000000008000000-00000000ffffffff
   0000000000000000-0000000007ffffff : alias ram-below-4g @pc.ram
0000000000000000-0000000007ffffff
   00000000fee00000-00000000feefffff : apic
pci
0000000000000000-7ffffffffffffffe : pci
   00000000feba0000-00000000febbffff : e1000-mmio
   00000000febf0000-00000000febf0fff : cirrus-mmio
   00000000fc000000-00000000fdffffff : cirrus-pci-bar0
     00000000fc000000-00000000fc7fffff : vga.vram
     00000000fd000000-00000000fd3fffff : cirrus-bitblt-mmio
     00000000fc000000-00000000fc7fffff : cirrus-linear-io
   00000000000a0000-00000000000bffff : cirrus-lowmem-container
     00000000000a0000-00000000000bffff : cirrus-low-memory
   00000000000c0000-00000000000dffff : pc.rom
   00000000000e0000-00000000000fffff : alias isa-bios @pc.bios
00000000fffe0000-00000000ffffffff
   00000000fffe0000-00000000ffffffff : pc.bios
pc.ram
0000000000000000-0000000007ffffff : pc.ram
pc.bios
00000000fffe0000-00000000ffffffff : pc.bios
I/O
0000000000000000-000000000000ffff : io
   000000000000c000-000000000000c03f : e1000-io
   000000000000c040-000000000000c04f : piix-bmdma-container
     000000000000c04c-000000000000c04f : bmdma
     000000000000c048-000000000000c04b : piix-bmdma
     000000000000c044-000000000000c047 : bmdma
     000000000000c040-000000000000c043 : piix-bmdma
   0000000000000cfc-0000000000000cff : pci-conf-data
   0000000000000cf8-0000000000000cfb : pci-conf-idx

PPC (HEAD)
memory
00000000-fffffffe : system
   800a0000-800affff : alias vga.chain4 @vga.vram 80000000-8000ffff
   80880000-808fffff : macio
     808e0000-808fffff : macio-nvram
     808a0000-808a0fff : pmac-ide
     80896000-80895fff : (null)
     80893000-8089303f : alias escc-bar @escc 80013000-8001303f
     80888000-80888fff : dbdma
     80880000-80880fff : heathrow-pic
   80800000-8080ffff : vga.rom
   80000000-807fffff : vga.vram
   800a0000-800bffff : vga-lowmem
   80013000-8001303f : escc
   fee00000-fee00fff : pci-data-idx
   fec00000-fec00fff : pci-conf-idx
   fe000000-fe1fffff : isa-mmio
escc
80013000-8001303f : escc
vga.vram
80000000-807fffff : vga.vram

PPC with my pci-hole patch:
memory
00000000-fffffffe : system
   80013000-8001303f : escc
   fee00000-fee00fff : pci-data-idx
   fec00000-fec00fff : pci-conf-idx
   80000000-fdffffff : alias pci-hole @pci-mmio 80000000-fdffffff
   fe000000-fe1fffff : isa-mmio
pci-mmio
00000000-ffffffff : pci-mmio
   000a0000-000affff : alias vga.chain4 @vga.vram 80000000-8000ffff
   80880000-808fffff : macio
     808e0000-808fffff : macio-nvram
     808a0000-808a0fff : pmac-ide
     80896000-80895fff : (null)
     80893000-8089303f : alias escc-bar @escc 80013000-8001303f
     80888000-80888fff : dbdma
     80880000-80880fff : heathrow-pic
   80800000-8080ffff : vga.rom
   80000000-807fffff : vga.vram
   000a0000-000bffff : vga-lowmem
escc
80013000-8001303f : escc
vga.vram
80000000-807fffff : vga.vram

Sparc64:
0000000000000000-7ffffffffffffffe : system
   000001ff00000000-000001ffffffffff : pci-mmio
     000001ff000a0000-000001ff000affff : alias vga.chain4 @vga.vram
0000000000800000-000000000080ffff
     000001ff03000000-000001ff037fffff : isa-mmio
     000001ff02000000-000001ff02ffffff : isa-mmio
     000001ff01000000-000001ff0100ffff : vga.rom
     000001ff00800000-000001ff00ffffff : vga.vram
     000001ff00000000-000001ff000fffff : alias pci_bridge_mem
@pci_pridge_pci 0000000000000000-00000000000fffff
     000001ff00000000-000001ff000fffff : alias pci_bridge_pref_mem
@pci_pridge_pci 0000000000000000-00000000000fffff
     000001ff00000000-000001ff000fffff : alias pci_bridge_mem
@pci_pridge_pci 0000000000000000-00000000000fffff
     000001ff00000000-000001ff000fffff : alias pci_bridge_pref_mem
@pci_pridge_pci 0000000000000000-00000000000fffff
     000001ff000a0000-000001ff000bffff : vga-lowmem
   000001fe02000000-000001fe0200ffff : apb-pci-ioport
   000001fe01000000-000001fe01ffffff : apb-pci-config
   000001fe00000000-000001fe0000ffff : apb-config
pci_pridge_pci
     ^
0000000000000000-7ffffffffffffffe : pci_pridge_pci
pci_pridge_pci
0000000000000000-7ffffffffffffffe : pci_pridge_pci
vga.vram
0000000000800000-0000000000ffffff : vga.vram

---
  memory.c  |  101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  memory.h  |    2 +
  monitor.c |    7 ++++
  3 files changed, 110 insertions(+), 0 deletions(-)

diff --git a/memory.c b/memory.c
index ba74435..6b33fc4 100644
--- a/memory.c
+++ b/memory.c
@@ -17,6 +17,7 @@
  #include "bitops.h"
  #include "kvm.h"
  #include<assert.h>
+#include "monitor.h"

  unsigned memory_region_transaction_depth = 0;

@@ -1256,3 +1257,103 @@ void set_system_io_map(MemoryRegion *mr)
      address_space_io.root = mr;
      memory_region_update_topology();
  }
+
+typedef struct MemoryRegionList MemoryRegionList;
+typedef struct MemoryRegionListHead MemoryRegionListHead;
+
+struct MemoryRegionList {
+    const MemoryRegion *mr;
+    QLIST_ENTRY(MemoryRegionList) queue;
+};
+
+struct MemoryRegionListHead {
+    QLIST_HEAD(queue, MemoryRegionList) head;
+};
+
+static void mtree_print_mr(Monitor *mon, const MemoryRegion *mr,
+                           unsigned int level, target_phys_addr_t base,
+                           MemoryRegionListHead *print_queue)
+{
+    const MemoryRegion *submr;
+    unsigned int i;
+
+    for (i = 0; i<  level; i++) {
+        monitor_printf(mon, "  ");
+    }
+
+    if (mr->alias) {
+        if (print_queue) {
+            MemoryRegionList *ml;
+            bool found = false;
+
+            /* check if the alias is already in the queue */
+            QLIST_FOREACH(ml,&print_queue->head, queue) {
+                if (ml->mr == mr->alias) {
+                    found = true;
+                }
+            }
+
+            if (!found) {
+                ml = g_malloc(sizeof(*ml));
+                ml->mr = mr->alias;
+                QLIST_INSERT_HEAD(&print_queue->head, ml, queue);
+            }
+        }
+        monitor_printf(mon, TARGET_FMT_plx "-" TARGET_FMT_plx " :
alias %s @%s "
+                       TARGET_FMT_plx "-" TARGET_FMT_plx "\n",
+                       base + mr->addr,
+                       base + mr->addr + (target_phys_addr_t)mr->size - 1,
+                       mr->name,
+                       mr->alias->name,
+                       mr->alias_offset + mr->alias->addr,
+                       mr->alias_offset  + mr->alias->addr +
+                       (target_phys_addr_t)mr->size - 1);
+
+    } else {
+        monitor_printf(mon, TARGET_FMT_plx "-" TARGET_FMT_plx " : %s\n",
+                       base + mr->addr,
+                       base + mr->addr + (target_phys_addr_t)mr->size - 1,
+                       mr->name);
+    }
+    QTAILQ_FOREACH(submr,&mr->subregions, subregions_link) {
+        mtree_print_mr(mon, submr, level + 1, base + mr->addr, print_queue);
+    }
+}
+
+void mtree_info(Monitor *mon)
+{
+    MemoryRegionListHead *ml_head, *ml_head2, *ml_tmp;
+    MemoryRegionList *ml, *ml2;
+
+    ml_head = g_malloc(sizeof(*ml));
+    QLIST_INIT(&ml_head->head);
+
+    monitor_printf(mon, "memory\n");
+    mtree_print_mr(mon, address_space_memory.root, 0, 0, ml_head);
+
+    ml_head2 = g_malloc(sizeof(*ml));
+
+    /* print aliased regions */
+    for (;;) {
+        QLIST_INIT(&ml_head2->head);
+
+        QLIST_FOREACH_SAFE(ml,&ml_head->head, queue, ml2) {
+            monitor_printf(mon, "%s\n", ml->mr->name);
+            mtree_print_mr(mon, ml->mr, 0, 0, ml_head2);
+            g_free(ml);
+        }
+        if (QLIST_EMPTY(&ml_head->head)) {
+            break;
+        }
+        ml_tmp = ml_head;
+        ml_head = ml_head2;
+        ml_head2 = ml_tmp;
+    }
+
+#ifdef TARGET_I386
+    monitor_printf(mon, "I/O\n");
+    mtree_print_mr(mon, address_space_io.root, 0, 0, ml_head);
+#endif
+    g_free(ml_head2);
+    g_free(ml_head);
+}
diff --git a/memory.h b/memory.h
index 06b83ae..09d8e29 100644
--- a/memory.h
+++ b/memory.h
@@ -500,6 +500,8 @@ void memory_region_transaction_begin(void);
   */
  void memory_region_transaction_commit(void);

+void mtree_info(Monitor *mon);
+
  #endif

  #endif
diff --git a/monitor.c b/monitor.c
index 8ec2c5e..f86fff6 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2978,6 +2978,13 @@ static const mon_cmd_t info_cmds[] = {
      },
  #endif
      {
+        .name       = "mtree",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show memory tree",
+        .mhandler.info = mtree_info,
+    },
+    {
          .name       = "jit",
          .args_type  = "",
          .params     = "",



--
Best Regards

Wayne Xia
mail:address@hidden
tel:86-010-82450803
reply via email to
[Prev in Thread] Current Thread [Next in Thread]