Messages in this thread | | | Date | Fri, 12 Dec 2014 12:27:42 -0800 | From | Dave Hansen <> | Subject | Re: [RFC][PATCH 0/8] x86, mpx: Support 32-bit binaries on 64-bit kernels |
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On 12/12/2014 12:22 PM, Andy Lutomirski wrote: > On 12/12/2014 11:12 AM, Dave Hansen wrote: >> This is 3.20 material. I'm hoping to get some comments early >> in case folks have some issues with the way it's being done. >> >> The MPX hardware structures differ in layout in 32 and 64-bit >> mode. A 32-bit binary running on a 64-bit kernel needs the >> 32-bit structures, so we need code which switches between >> the two modes. > > The OS community figured out years ago that you aren't supposed to do > this. Did everyone forget to tell the hardware people?
What is your concern with it, exactly?
You want the same size structures with the same format for 32-bit and 64-bit modes?
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