[RFC][PATCH 2/4] checkpoint/restart: x86 support

Oren Laadan orenl at cs.columbia.edu
Fri Aug 8 18:20:14 PDT 2008

Dave Hansen wrote:
> On Fri, 2008-08-08 at 19:04 -0400, Oren Laadan wrote:
>>> struct pt_regs is part of the kernel ABI, it will not change.
>> I'm in favor about keeping the format identical between the variations of
>> each architecture. Note, however, that "struct pt_regs" won't do because it
>> may change with these variations.
> "Part of the kernel ABI" makes it sound to me like it won't change.
> Who's right here? :)
 > -- Dave

hehehe .. both; I meant that while it doesn't change per architecture, it
varies between architectures. So "struct pt_regs" compiled for x86-32 is
different than that compiled for x86-64. Therefore we can't just dump the
structure as is and expect that 64 bit would be able to parse the 32 bit.
In other words, we need an intermediate representation.


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