Messages in this thread | | | Date | Fri, 2 May 2014 14:07:13 -0700 | Subject | Re: [RFC/HACK] x86: Fast return to kernel | From | Linus Torvalds <> |
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On Fri, May 2, 2014 at 2:04 PM, Andy Lutomirski <luto@amacapital.net> wrote: > > Because otherwise I'd have to keep track of whether it's a zeroentry > or an errorentry. I can't stuff the offset in a register without even > more stack hackery, since there are no available registers there. I > could split the whole thing into two code paths, I guess.
Ahh. Never mind. I didn't think about the fact that the error entry case had one more field on the stack. Your approach is all fine, it was me not seeing the problem.
Linus
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