Messages in this thread |  | | | Subject | Re: [RFC][PATCH 2/4] checkpoint/restart: x86 support | | From | Dave Hansen <> | | Date | Mon, 11 Aug 2008 08:36:04 -0700 |
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On Sun, 2008-08-10 at 07:55 -0700, Jeremy Fitzhardinge wrote: > Struct pt_regs is not ABI, and can (and has) changed on x86. It's not > suitable for a checkpoint structure because it only contains the > registers that the kernel trashes, not all usermode registers (on i386, > it leaves out %gs, for example). asm-x86/ptrace-abi.h does define stuff > that's fixed in stone; it expresses it in terms of a register array, > with constants defining what element is which register.
Thanks for the explanation.
I just want to reduce the coding and maintenance burden here. Xen must do this for partition mobility, right? Does it define all its own stuff?
-- Dave
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