Re: [Qemu-devel] [PATCHv2 5/6] target-arm: add dump-guest-memory support

[Paolo Bonzini]

Il 24/03/2013 21:39, Peter Maydell ha scritto:
>> >
>> > I guess the API was made with x86 in mind.  I will see if the
>> > requirement can be removed with some ifdefs in the dump.c file.
>> >
>> > (come to think of it, I guess this ARM code will need to use ELFCLASS64
>> >  when we have physical memory > 4GiB (LPAE))
> It would be good to check whether that is correct -- mostly core
> files are for dumps of a virtual address space so I don't know
> whether gdb/etc would understand an ARM corefile which claimed
> ELFCLASS64. (I mean understand it as an AArch32 corefile rather
> than AArch64.)

Note that in this case we can choose between physical and virtual
address space dumps.

Virtual address space is mostly useful with gdb; physical address space
can be used for example with "crash", a post-mortem kernel debugger.

Paolo