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Re: [Qemu-devel] How to access guest memory from qemu device internal
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From: |
Kaiyuan |
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Subject: |
Re: [Qemu-devel] How to access guest memory from qemu device internal |
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Date: |
Mon, 24 Nov 2014 14:43:55 +0800 (GMT+08:00) |
> -----Origin email-----
> From: Peter Maydell <address@hidden>
> Sent Time: Monday, November 24, 2014
> To: Kaiyuan <address@hidden>
> Cc: Greg Kurz <address@hidden>, qemu-devel <address@hidden>
> Subject: Re: [Qemu-devel] How to access guest memory from qemu device internal
>
> On 23 November 2014 at 13:18, Kaiyuan <address@hidden> wrote:
> > Thanks for your explanation about guest physical/virtual
> > address and host physical/virtual address, and I think I
> > asked a wrong question. Is there a function that translates
> > guest Physical address to host Virtual address so that I
> > can access guest space by a host pointer?
>
> You can use cpu_physical_memory_map() and _unmap()
> for this kind of thing. (Make sure you unmap afterwards.)
>
> -- PMM
Thank you very much for your help!Kaiyuan Liang