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Re: updating COMPAT_LINUX for linux 2.6.x support (take 2)

On Thu, Jul 01, 2010 at 01:32:47AM +0200, Rhialto wrote:
> On Wed 30 Jun 2010 at 08:57:44 -0700, Chuck Silvers wrote:
> >    - the assembler apparently now uses a different opcode for reloading %gs
> >      than it used to, so the check for this instruction in INTRFASTEXIT
> >      being the cause of a kernel trap wasn't working.  I fixed the check
> >      to match the current generated code.
> Would it not be necessary for compatibility with older binaries (how
> much older??) to check for both cases?

there's no compatibility issue here, the kernel is looking at its own
instructions, not an application's.  we require that a kernel be built
with the matching toolchain, so there's only one version of the assembler
that would matter for a particular kernel binary.


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