On Tue, Feb 07, 2017 at 01:50:20PM +0000, Mark Rutland wrote: > > Right something along those lines. (a) will need GCC help, and (b) would > > be kernel-arch specific. So this isn't something we can quickly do. > > I agree this isn't something that can be hacked together quickly, and > certainly shouldn't block these patches. > > However, I don't think we need anything new from GCC, and I think we > already have a generic API for (b). > > For (a) we don't need new GCC help if we do something like we did in > commit 72c5839515260dce to do the mangling. Prepend a prefix to the > register, e.g. changing 'x0' to '__pt_regs_offset_x0', which we arrange > to hold the correct value.
I'm not sure I can decipher that commit and therefore have no idea if something similar can be done for other architectures.
