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[Qemu-devel] [PULL 2/9] hmp-commands: use long for begin and length in d

From: Dr. David Alan Gilbert (git)
Subject: [Qemu-devel] [PULL 2/9] hmp-commands: use long for begin and length in dump-guest-memory
Date: Thu, 21 Jun 2018 17:47:20 +0100

From: Suraj Jitindar Singh <address@hidden>

The dump-guest-memory command is used to dump an area of guest memory
to a file, the piece of memory is specified by a begin address and
a length. These parameters are specified as ints and thus have a maximum
value of 4GB. This means you can't dump the guest memory past the first
4GB and instead get:
(qemu) dump-guest-memory tmp 0x100000000 0x100000000
'dump-guest-memory' has failed: integer is for 32-bit values
Try "help dump-guest-memory" for more information

This limitation is imposed in monitor_parse_arguments() since they are
both ints. hmp_dump_guest_memory() uses 64 bit quantities to store both
the begin and length values. Thus specify begin and length as long so
that the entire guest memory space can be dumped.

Signed-off-by: Suraj Jitindar Singh <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
 hmp-commands.hx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index 0de7c4c29e..754620e411 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1116,7 +1116,7 @@ ETEXI
         .name       = "dump-guest-memory",
-        .args_type  = 
+        .args_type  = 
         .params     = "[-p] [-d] [-z|-l|-s] filename [begin length]",
         .help       = "dump guest memory into file 'filename'.\n\t\t\t"
                       "-p: do paging to get guest's memory mapping.\n\t\t\t"

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