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Re: [Qemu-discuss] Ram dump more than 4GB
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From: |
Thomas Huth |
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Subject: |
Re: [Qemu-discuss] Ram dump more than 4GB |
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Date: |
Mon, 24 Jul 2017 11:06:04 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 |
On 21.07.2017 19:46, Pierre Kim wrote:
> Hello, I am looking for a way to dump the RAM of a virtual machine.
>
> There is pmemsave but it only allows 32bit integers as the parameter so
> I am unable to dump RAM areas past 4GB limit.
>
> Is there a way to dump RAM regions after 4GB.
I guess it should be possible to fix the HMP command to allow sizes to
be specified with 64-bit...
But until that is done: It seems like only the size parameter is limited
to 32-bit, but the address can be given as full 64-bit instead. So you
could call it multiple times with different address parameters and then
concatenate the files.
Or have a look at the QMP version of that command instead (see the Wiki
at http://wiki.qemu.org/QMP for how to use that). I think its size
parameter is not limited to 32-bit.
Thomas