Messages in this thread | | | Date | Mon, 12 Nov 2007 16:11:34 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [patch] x86: fix taking DNA during 64bit sigreturn |
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Andi Kleen wrote: >> The *real* fix for this is almost certainly to just get rid of the 64-bit >> code entirely, and use the 32-bit code as the base for one single unified >> setup. > > That would likely break the ABI. x86-64 ABI is completely different here -- > no ibcs, just pure x86 ISA. >
Different ABIs clearly have to be handled, but I don't think that is a huge deal. The i387 code overall (not just asm/i387.h) is very different, though, and I find it unlikely that a properly unified code is going to be ready and working in the 2.6.24 timeframe. I'm exploring if a partial merge with high confidence level is feasible; either way, a proper merge for 2.6.25 is probably the right thing.
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