Messages in this thread | | | Subject | Re: [RFC][PATCH 2/4] checkpoint/restart: x86 support | From | Dave Hansen <> | Date | Fri, 08 Aug 2008 19:20:58 -0700 |
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On Fri, 2008-08-08 at 21:20 -0400, Oren Laadan wrote: > 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.
Surely we already handle this, though. Don't we allow a 32-bit app running on a 64-bit kernel to PTRACE_GETREGS and get the 32-bit version? A 64-bit app will get the 64-bit version making the same syscall. It's all handled in the syscall compatibility code.
-- Dave
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