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Re: [Qemu-discuss] Ram dump more than 4GB
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From: |
Markus Armbruster |
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Subject: |
Re: [Qemu-discuss] Ram dump more than 4GB |
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Date: |
Mon, 24 Jul 2017 12:04:11 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) |
Thomas Huth <address@hidden> writes:
> 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...
Yes.
> 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.
Correct.