Re: [PATCH-for-5.0] gdbstub: Use correct address space with Qqemu.PhyMemMode packet

[Peter Maydell]

On Sun, 31 May 2020 at 17:42, Jon Doron <arilou@gmail.com> wrote:
>
> On 31/05/2020, Philippe Mathieu-Daudé wrote:
> >On 3/30/20 6:41 PM, Peter Maydell wrote:
> >> PS: do we have any documentation of this new command ?
> >> ab4752ec8d9 has the implementation but no documentation...
> >
> >Jon, do you have documentation on the Qqemu.PhyMemMode packet?

> Hi, there is no documentation for this mode, but in general the idea was
> very simple.
>
> I want to have GDB the option to see the physical memory and examine it
> and have this option toggled.
>
> This was useful to me when I was working on nested virtual machine and I
> wanted to examine different states of the VMCS12 and EPTs.
>
> I used this in the following commands:
> // Enable
> maint packet Qqemu.PhyMemMode:1
>
> // Disable
> maint packet Qqemu.PhyMemMode:0

docs/system/gdb.rst would be the place to document QEMU-specific
extensions to the gdb protocol (there's an "advanced debugging
options" section where we document things like the single-step
stuff you can also change via 'maint packet').

thanks
-- PMM