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On Fri, 2007-09-14 at 13:53 -0700, Jeremy Fitzhardinge wrote: > Anthony Liguori wrote: > > This patch refactors the current hypercall infrastructure to better support live > > migration and SMP. It eliminates the hypercall page by trapping the UD > > exception that would occur if you used the wrong hypercall instruction for the > > underlying architecture and replacing it with the right one lazily. > > > > I guess it would be pretty rude/unlikely for these opcodes to get reused > in other implementations... But couldn't you make the page trap > instead, rather than relying on an instruction fault? That's a pain for inline hypercalls tho. I was planning on moving lguest to this model (which is interesting, because AFAICT this insn will cause a #UD or #GP depending on whether VT is supported on this box so I have to look for both). Cheers, Rusty. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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