On Sun, 2018-01-07 at 16:36 -0700, Jeff Law wrote: > > My fundamental problem with this patchkit is that it is 100% x86/x86_64 > specific. > > ISTM we want a target independent mechanism (ie, new standard patterns, > options, etc) then an x86/x86_64 implementation using that target > independent framework (ie, the actual implementation of those new > standard patterns).
From the kernel point of view, I'm not too worried about GCC internal implementation details. What would be really useful to agree in short order is the command-line options that invoke this behaviour, and the ABI for the thunks. Once that's done, we can push the patches to Linus and people can build safe kernels, and we can build with HJ's existing patch set for the time being. And you can bikeshed the rest to your collective hearts' content... :)
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