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    SubjectRE: [PATCH] Unicore architecture patch review, part 2
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    > -----Original Message-----
    > From: linux-arch-owner@vger.kernel.org [mailto:linux-arch-
    > owner@vger.kernel.org] On Behalf Of Arnd Bergmann
    > Sent: Wednesday, December 08, 2010 8:54 PM
    > To: Guan Xuetao
    > Cc: linux-arch@vger.kernel.org; linux-kernel@vger.kernel.org
    > Subject: Re: [PATCH] Unicore architecture patch review, part 2
    >
    > On Wednesday 08 December 2010, Guan Xuetao wrote:
    >
    > > > > @@ -0,0 +1,390 @@
    > > > > +/* 0 */ CALL(sys_restart_syscall)
    > > > > + CALL(sys_exit)
    > > > > + CALL(sys_fork_wrapper)
    > > > > + CALL(sys_read)
    > > > > + CALL(sys_write)
    > > > > +/* 5 */ CALL(sys_open)
    > > > > + CALL(sys_close)
    > > >
    > > > When you start using the generic unistd.h file, you can also replace
    > > > this table with something like arch/tile/kernel/sys.c.
    > > Well. I will use the generic unistd.h in UniCore-64 version.
    >
    > I thought you had agreed to break ABI compatibility with your existing
    code
    > base and use the generic ABI everywhere.
    >
    > Did I misunderstand you or did you make up your mind since then?
    >
    We do define new 32-bit ABI work at present, and I will use generic unistd
    in new ABI.
    But existing machines must be maintained, so many codes need remain
    compatibility.
    Then, it would be a long-term work, and 64-bit coding will be before that.

    Guan Xuetao



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